Codes and Frequencies
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Explore how IPUMS created this variable
Most IPUMS data transformations are performed using variable harmonization tables that specify how each value in the source data is recoded. Some variables also require programming logic in addition to the harmonization table. The harmonization documents for this variable are:
- Harmonization table
- Supplemental programming
- Instructions for interpreting harmonization documents
class Bplus : public Editor {
public:
Bplus(VarPointer varInfo) : Editor(varInfo) {}
void edit() {
long a = getRecoded();
switch (dataSet) {
case dataset_id::us1960a: {
if (US1960A_0433() > 9900)
a = 98;
} break;
case dataset_id::us1970a: {
if (US1970A_0430() > 9900)
a = 98;
} break;
case dataset_id::us1980a: {
if (US1980A_0432() > 9900)
a = 98;
} break;
case dataset_id::us1990a: {
if (US1990A_0430() > 9900)
a = 98;
} break;
case dataset_id::us2000a: {
if (US2000A_0428() > 9900)
a = 98;
} break;
case dataset_id::us2005a: {
if (US2005A_0422() > 9900)
a = 98;
} break;
}
setData(a);
}
};
Description
BPLUS indicates the person's state of birth within the United States.
Comparability — General
BPLUS is largely comparable across the U.S. samples. The codes of BPLUS are based on the Federal Information Processing Standards (FIPS) coding scheme. For the country of birth of foreign-born persons, see BPLCOUNTRY.
For all sample years, persons born in United States territories are coded as "Foreign-Born".
Prior to 1900, the census provided no explicit instructions to enumerators other than to report the state or territory in which the person was born. From 1900 onwards, respondents were to follow contemporary boundaries when reporting the state, territory, or U.S. possession in which they were born. Unharmonized source variables for 1850 and 1880 distinguish unincorporated territories from contemporary states. For comparability with other samples, these territories are coded according to contemporary state boundaries in BPLUS.
For 1850-1910, the "United States, n.s." category includes respondents identified as "Native American" in the original birth place variables. See unharmonized source variables to identify these respondents.
Universe
- United States 1960: All persons
- United States 1970: All persons
- United States 1980: All persons
- United States 1990: All persons
- United States 2000: All persons
- United States 2005: All persons
- United States 2010: All persons
- United States 2015: All persons
- United States 2020: All persons
Availability
- United States: 1850a, 1850b, 1860, 1870, 1880a, 1880b, 1900, 1910, 1960, 1970, 1980, 1990, 2000, 2005, 2010, 2015, 2020

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