Sample characteristics: Ireland
| Census/survey characteristics | |
| Type | Census |
| Title | Census for Ireland for the Year 1901 |
| Statistical agency | The National Archives of Ireland |
| Population universe | All persons present in Ireland at the time of census, including visitors and those in residence. |
| De jure or de facto | De facto |
| Census/survey day | March 31, 1901 |
| Field work period | March 18 to March 30, 1901 |
| Questionnaire | The information is based on Form A- Household Schedule. Form B reports summary tables of population figures. |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | Full count |
| Sample fraction | 1 |
| Sample size (person records) | 4435023 |
| Sample weights | None |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | No |
| Smallest geography | County |
| Unit definitions | |
| Dwellings | A dwelling has a distinct outer door and shall be considered as one house, although it may be occupied by several families living in separate apartments, or what are known as tenements, under the same roof. |
| Households | A "distinct family" is defined as (a) a man and his wife or a man and his and children living together, and no other person residing with them or family such as either of the foregoing, with their relatives, servants, and visitors residing with them. (b) All persons occupying the same house common and boarding at the same table, and their servants. (c) A person living alone whether occupying the whole or a part of a house, with servants, if any. (d) Two or more lodgers boarding together distinct from the family and their servants, if any. |
| Collective dwellings | A non-private household is a boarding house, hotel, guest house, barrack, hospital, nursing home, boarding schools, religious institution, welfare institution, prison, or ship, etc. |
| Census/survey characteristics | |
| Type | Census |
| Title | Census for Ireland for the Year 1911 |
| Statistical agency | The National Archives of Ireland |
| Population universe | All persons present in Ireland at the time of census, including visitors and those in residence. |
| De jure or de facto | De facto |
| Census/survey day | April 2, 1911 |
| Field work period | March 20 to April 1, 1911 |
| Questionnaire | The information is based on Form A- Household Schedule. Form B reports summary tables of population figures. |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | Full count |
| Sample fraction | 1 |
| Sample size (person records) | 4381387 |
| Sample weights | None |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | No |
| Smallest geography | County |
| Unit definitions | |
| Dwellings | A dwelling has a distinct outer door and shall be considered as one house, although it may be occupied by several families living in separate apartments, or what are known as tenements, under the same roof. |
| Households | A "distinct family" is defined as (a) a man and his wife or a man and his and children living together, and no other person residing with them or family such as either of the foregoing, with their relatives, servants, and visitors residing with them. (b) All persons occupying the same house common and boarding at the same table, and their servants. (c) A person living alone whether occupying the whole or a part of a house, with servants, if any. (d) Two or more lodgers boarding together distinct from the family and their servants, if any. |
| Collective dwellings | A non-private household is a boarding house, hotel, guest house, barrack, hospital, nursing home, boarding schools, religious institution, welfare institution, prison, or ship, etc. |
| Census/survey characteristics | |
| Type | Census |
| Title | Census of Population of Ireland, 1971 |
| Statistical agency | Central Statistics Office |
| Population universe | All persons present in Ireland at the time of census, including visitors and those in residence. Usual residents temporarily absent from the State and members of the Defence Forces, who on Census night, were serving abroad with the United Nations were excluded. |
| De jure or de facto | De facto |
| Census/survey day | April 18, 1971 |
| Questionnaire | There are 5 forms: Form A (Basic household Census form), Form B (summary of the population figures), Form C (summary of the household and population figures), Form D (for communal establishments), Form N (relevant note sto be attached with Form A) and Form P (for enumerations of guests in hotels and guest houses). The information from Form A is used here. |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | A 10% random sample of the recoded household records from each county was selected. The records within each county were sorted randomly before output to the sample file. |
| Sample fraction | 10% |
| Sample size (person records) | 296878 |
| Sample weights | Self-weighting (expansion factor=10) |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Region |
| Unit definitions | |
| Dwellings | Permanent structures consisting of walls and a roof (whether or not intended for occupation and whether or not occupied on Census night). |
| Households | A private household is defined as a group of persons living together (usually but not necessarily related), jointly occupying the whole or part of a private dwelling house, flat, or temporary dwelling and sharing a common budget. A person who lives alone or a person who occupies only part of the living accommodation but does not normally share a common budget with the other occupants is regarded as a separate household. |
| Collective dwellings | A non-private household is a boarding house, hotel, guest house, barrack, hospital, nursing home, boarding schools, religious institution, welfare institution, prison, or ship, etc. However, proprietors and manager of hotels, principals of boarding schools, persons in charge of various other types of institutions and members of staff who, with their families, occupy flats on the premises are considered as private households. |
| Census/survey characteristics | |
| Type | Census |
| Title | Census of Population of Ireland, 1979 |
| Statistical agency | Central Statistics Office |
| Population universe | All persons present in Ireland at the time of census, including visitors and those in residence. Usual residents temporarily absent from the State and members of the Defence Forces, who on Census night, were serving abroad with the United Nations were excluded. |
| De jure or de facto | De facto |
| Census/survey day | April 1, 1979 |
| Questionnaire | The information is based on Form A - Household Schedule. |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | A 10% random sample of the recoded household records from each county was selected. The records within each county were sorted randomly before output to the sample file. |
| Sample fraction | 10% |
| Sample size (person records) | 337686 |
| Sample weights | Self-weighting (expansion factor=10) |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Region |
| Unit definitions | |
| Households | A private household is defined as a group of persons living together (usually but not necessarily related), jointly occupying the whole or part of a private dwelling house, flat, or temporary dwelling and sharing a common budget. A person who lives alone or a person who occupies only part of the living accommodation but does not normally share a common budget with the other occupants is regarded as a separate household. |
| Collective dwellings | A non-private household is a boarding house, hotel, guest house, barrack, hospital, nursing home, boarding schools, religious institution, welfare institution, prison, or ship, etc. However, proprietors and manager of hotels, principals of boarding schools, persons in charge of various other types of institutions and members of staff who, with their families, occupy flats on the premises are considered as private households. |
| Census/survey characteristics | |
| Type | Census |
| Title | Census of Population of Ireland, 1981 |
| Statistical agency | Central Statistics Office |
| Population universe | All persons present in Ireland at the time of census, including visitors and those in residence. Usual residents temporarily absent from the State and members of the Defence Forces, who on Census night, were serving abroad with the United Nations were excluded. |
| De jure or de facto | De facto |
| Census/survey day | April 5, 1981 |
| Questionnaire | There are 2 forms to be completed by households or individuals: (1) Form A - Census Household Schedule; and (2) Form A(P) - completed by persons in certain circumstances. The information from Form A is used here. |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | A 10% random sample of the recoded household records from each county was selected. The records within each county were sorted randomly before output to the sample file. |
| Sample fraction | 10% |
| Sample size (person records) | 344291 |
| Sample weights | Self-weighting (expansion factor=10) |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Region |
| Unit definitions | |
| Dwellings | A dwelling unit is defined as living accommodation which is occupied or, of vacant, is intended for occupation, by one household. |
| Households | A private household is defined as a group of persons living together (usually but not necessarily related), jointly occupying the whole or part of a private dwelling house, flat, or temporary dwelling and sharing a common budget. A person who lives alone or a person who occupies only part of the living accommodation but does not normally share a common budget with the other occupants is regarded as a separate household. |
| Collective dwellings | A non-private household is a boarding house, hotel, guest house, barrack, hospital, nursing home, boarding schools, religious institution, welfare institution, prison, or ship, etc. However, proprietors and manager of hotels, principals of boarding schools, persons in charge of various other types of institutions and members of staff who, with their families, occupy flats on the premises are considered as private households. |
| Census/survey characteristics | |
| Type | Census |
| Title | Census of Population of Ireland, 1986 |
| Statistical agency | Central Statistics Office |
| Population universe | All persons present in Ireland at the time of census, including visitors and those in residence. Usual residents temporarily absent from the State and members of the Defence Forces, who on Census night, were serving abroad with the United Nations were excluded. |
| De jure or de facto | De facto |
| Census/survey day | April 13, 1986 |
| Questionnaire | There are 2 forms to be completed by households or individuals: (1) Form A - Census Household Schedule; and (2) Form A(P) - completed by persons in certain circumstances. The information from Form A is used here. |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | A 10% random sample of the recoded household records from each county was selected. The records within each county were sorted randomly before output to the sample file. |
| Sample fraction | 10% |
| Sample size (person records) | 355020 |
| Sample weights | Self-weighting (expansion factor=10) |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Region |
| Unit definitions | |
| Dwellings | A dwelling unit is defined as living accommodation which is occupied or, if vacant, is intended for occupation, by one household. |
| Households | A private household is defined as a group of persons living together (usually but not necessarily related), jointly occupying the whole or part of a private dwelling house, flat, or temporary dwelling and sharing a common budget. A person who lives alone or a person who occupies only part of the living accommodation but does not normally share a common budget with the other occupants is regarded as a separate household. |
| Collective dwellings | A non-private household is a boarding house, hotel, guest house, barrack, hospital, nursing home, boarding schools, religious institution, welfare institution, prison, or ship, etc. However, proprietors and manager of hotels, principals of boarding schools, persons in charge of various other types of institutions and members of staff who, with their families, occupy flats on the premises are considered as private households. |
| Census/survey characteristics | |
| Type | Census |
| Title | Census of Population of Ireland, 1991 |
| Statistical agency | Central Statistics Office |
| Population universe | All persons present in Ireland at the time of census, including visitors and those in residence. Usual residents temporarily absent from the State and members of the Defence Forces, who on Census night, were serving abroad with the United Nations were excluded. |
| De jure or de facto | De facto |
| Census/survey day | April 21, 1991 |
| Questionnaire | There are 2 forms to be completed by households or individuals: (1) Form A - Census Household Schedule; and (2) Form A(P) - completed by persons in certain circumstances. The information from Form A is used here. |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | A 10% random sample of the recoded household records from each county was selected. The records within each county were sorted randomly before output to the sample file. |
| Sample fraction | 10% |
| Sample size (person records) | 353149 |
| Sample weights | Self-weighting (expansion factor=10) |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Region |
| Unit definitions | |
| Dwellings | A dwelling unit is defined as living accommodation which is occupied or, if vacant, is intended for occupation, by one household. |
| Households | A private household is defined as a group of persons living together (usually but not necessarily related), jointly occupying the whole or part of a private dwelling house, flat, or temporary dwelling and sharing a common budget. A person who lives alone or a person who occupies only part of the living accommodation but does not normally share a common budget with the other occupants is regarded as a separate household. |
| Collective dwellings | A non-private household is a boarding house, hotel, guest house, barrack, hospital, nursing home, boarding schools, religious institution, welfare institution, prison, or ship, etc. However, proprietors and manager of hotels, principals of boarding schools, persons in charge of various other types of institutions and members of staff who, with their families, occupy flats on the premises are considered as private households. |
| Census/survey characteristics | |
| Type | Census |
| Title | Census of Population of Ireland, 1996 |
| Statistical agency | Central Statistics Office |
| Population universe | All persons present in Ireland on the census night, including visitors and those in residence. Usual residents who were temporarily absent were excluded. |
| De jure or de facto | De facto |
| Census/survey day | April 28, 1996 |
| Questionnaire | There are 2 forms to be completed by households or individuals: (1) Form A - Census Form (or Schedule); and (2) Form A(P) - Personal Form. The information from Form A is used here. |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | A 10% random sample of the recoded household records from each county was selected. The records within each county were sorted randomly before output to the sample file. |
| Sample fraction | 10% |
| Sample size (person records) | 365323 |
| Sample weights | Self-weighting (expansion factor=10) |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Region |
| Unit definitions | |
| Dwellings | A dwelling unit is living accommodation which is occupied or, if vacant, is intended for occupation, by one or more households. |
| Households | A private household comprises either one person living alone or a group of people (not necessarily related) living at the same address with common housekeeping arrangements - that is, sharing at least one meal a day or sharing a living room or sitting room. |
| Collective dwellings | Examples of non-private households are establishments or institutions. These include hotels, country clubs, guest houses, B, boarding houses, hostel, semiary, monastery or convent, hospital, nurses' home, nursing home, county home, orphanage, boarding school, garda stations, and military barracks. |
| Census/survey characteristics | |
| Type | Census |
| Title | Census of Population of Ireland, 2002 |
| Statistical agency | Central Statistics Office |
| Population universe | All persons present in Ireland on the census night, including visitors and those in residence. Usual residents who were temporarily absent were included but asked a subset of questions. |
| De jure or de facto | De jure and de facto |
| Census/survey day | April 28, 2002 |
| Questionnaire | There are 5 forms completed by the public: a. Household Form ; b. Continuation Form; c. Listing Form ; d. Individual Form ; and d. Large Print Form. The information from the Household Form is us\ed here. |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | A 10% random sample of the recoded household records from each county was selected. The records within each county were sorted randomly before output to the sample file. |
| Sample fraction | 10% |
| Sample size (person records) | 410688 |
| Sample weights | Self-weighting (expansion factor=10) |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Region |
| Unit definitions | |
| Dwellings | A dwelling unit is living accommodation which is occupied or, if vacant, is intended for occupation, by one or more households. |
| Households | A private household comprises either one person living alone or a group of people (not necessarily related) living at the same address with common housekeeping arrangements - that is, sharing at least one meal a day or sharing a living room or sitting room. |
| Collective dwellings | Communal Establishments (CEs) or non-private households, including, hotel, boarding house, guest house, bed and breakfast, hostel, educational establishment, religious community, children's home, nursing home, hospital/nurses' home, prison, defence establishment (including ships), civilian ships, boats and barges, garda station, and holiday campsite |
| Census/survey characteristics | |
| Type | Census |
| Title | Census of Population of Ireland, 2006 |
| Statistical agency | Central Statistics Office |
| Population universe | All persons present in Ireland on the census night, including visitors and those in residence. Usual residents who were temporarily absent were included but asked a subset of questions. |
| De jure or de facto | De jure and de facto |
| Census/survey day | April 23, 2006 |
| Questionnaire | There are 4 forms completed by the public: a. Household Form (main census form); b. Listing Form ; c. Individual Form ; and d. Large Print Form. The information from the Household Form is used here. |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | A 10% random sample of the recoded household records from each county was selected. The records within each county were sorted randomly before output to the sample file. |
| Sample fraction | 10% |
| Sample size (person records) | 440314 |
| Sample weights | Self-weighting (expansion factor=10) |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Region |
| Unit definitions | |
| Dwellings | A dwelling unit is living accommodation which is occupied or, if vacant, is intended for occupation, by one or more households. |
| Households | A private household comprises either one person living alone or a group of people (not necessarily related) living at the same address with common housekeeping arrangements - that is, sharing at least one meal a day or sharing a living room or sitting room. |
| Collective dwellings | Communal Establishments (CEs) or non-private households, including, hotel, boarding house, guest house, bed and breakfast, hostel, educational establishment, religious community, children's home, nursing home, hospital/nurses' home, prison, defence establishment (including ships), civilian ships, boats and barges, garda station, and holiday campsite |
| Census/survey characteristics | |
| Type | Census |
| Title | Census of Population of Ireland, 2011 |
| Statistical agency | Central Statistics Office |
| Population universe | All persons present in Ireland on the census night, including visitors and those in residence. Usual residents who were temporarily absent were included but asked a subset of questions. |
| De jure or de facto | De jure and de facto |
| Census/survey day | April 10, 2011 |
| Field work period | ---- |
| Questionnaire | There are 3 forms completed by the public: a. Household Form (main census form); b. Listing Form (for communal establishments only); and c. Individual Form. The information from the Household Form is used here. |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | A 10% random sample of the recoded household records from each county was selected. The records within each county were sorted randomly before output to the sample file. |
| Sample fraction | 10% |
| Sample size (person records) | 474353 |
| Sample weights | Self-weighting (expansion factor=10) |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Region |
| Unit definitions | |
| Dwellings | A dwelling is a self contained living accommodation which is occupied or, if vacant, is intended for occupation, by one or more households. |
| Households | A private household comprises either one person living alone or a group of people (not necessarily related) living at the same address with common housekeeping arrangements - that is, sharing at least one meal a day or sharing a living room or sitting room. |
| Collective dwellings | Communal Establishments (CEs) or non-private households are establishments providing managed (full-time or part-time supervision) residential accommodation. This includes hotel, boarding house, guest house, bed and breakfast, hostel, educational establishment, religious community, children's home, nursing home, hospital/nurses' home, prison, defence establishment (including ships), civilian ships, boats and barges, garda station, and holiday campsite. Boarding houses with less than five boarders on Census Night are treated as private households. |
| Census/survey characteristics | |
| Type | Census |
| Title | Census of the Population of Ireland, 2016 |
| Statistical agency | Central Statistics Office |
| Population universe | All persons present in Ireland on the census night, including visitors and those in residence. Usual residents who were temporarily absent were included but asked a subset of questions. |
| De jure or de facto | De jure and de facto |
| Census/survey day | April 24, 2016 |
| Field work period | March and April 2016 |
| Questionnaire | There are 3 forms completed by the public: a. Household Form (main census form); b. Listing Form (for communal establishments only); and c. Individual Form. The information from the Household Form is used here. |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | A 10% random sample of the recoded household records from each county was selected. The records within each county were sorted randomly before output to the sample file. |
| Sample fraction | 10% |
| Sample size (person records) | 491122 |
| Sample weights | Self-weighting (expansion factor=10) |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Region |
| Unit definitions | |
| Dwellings | A dwelling is a self contained living accommodation which is occupied or, if vacant, is intended for occupation, by one or more households. |
| Households | A private household comprises either one person living alone or a group of people (not necessarily related) living at the same address with common housekeeping arrangements - that is, sharing at least one meal a day or sharing a living room or sitting room. |
| Collective dwellings | Communal Establishments (CEs) or non-private households are establishments providing managed (full-time or part-time supervision) residential accommodation. This includes hotel, boarding house, guest house, bed and breakfast, hostel, educational establishment, religious community, children's home, nursing home, hospital/nurses' home, prison, defence establishment (including ships), civilian ships, boats and barges, garda station, and holiday campsite. Boarding houses with less than five boarders on Census Night are treated as private households. |