Codes
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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
- No supplemental programming
- Instructions for interpreting harmonization documents
Comparability — General
State or territory names represent that state or territory's contemporary political boundaries in 1880. Territories whose state boundaries did not change between 1880 and admission receive the corresponding state code. These are Washington, Idaho, Montana, Wyoming, Utah, Arizona and New Mexico. Counties in the Dakota Territory are split between areas that ultimately became the states of North Dakota and South Dakota. An image of historical U.S. states and territories is available here.
All the United States censuses are taken on a de jure (usual place of residence) basis.
Universe
Availability
- United States: 1870
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