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County Longitudinal Template, 1840-1990 (ICPSR 6576)
Principal Investigator(s): Horan, Patrick M.; Hargis, Peggy G.
The County Longitudinal Template is a tool that enables researchers to allow for temporal changes in the geographic boundaries of counties in the United States. These data provide a decade-by-decade account of the administrative status of each county, starting in 1990 and tracing each census period back through 1840. The first four variables are the county name, ICPSR state code, FIPS code, and ICPSR county code. These four variables allow the researcher to select the counties for the state in question. The next 16 variables are ID variables for each census year, 1990 back to 1840. The last 13 variables are boundary change flags for each census year from 1960 to 1840.
Horan, Patrick M., and Peggy G. Hargis. County Longitudinal Template, 1840-1990. ICPSR06576-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 1995. http://doi.org/10.3886/ICPSR06576.v1
Persistent URL: http://doi.org/10.3886/ICPSR06576.v1
This study was funded by:
- Georgia Agricultural Experiment Station (S-184)
Scope of Study
Date of Collection:
Universe: All counties in the United States.
Data Types: aggregate data
Data Collection Notes:
This collection is structured as list, or free field, data, with one case in each record. Each record has the same number of variables, but the actual record length of each line varies due to the differing width of certain variables. The maximum record length in the file is 114.
DEMOGRAPHIC, ECONOMIC, AND SOCIAL DATA: THE UNITED STATES, 1790-1970 (ICPSR 0003) and other census collections from ICPSR
- Checked for undocumented or out-of-range codes.
Original ICPSR Release: 1995-12-20
- Citations exports are provided above.
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