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INCORP
Incorporated municipality code

Description

INCORP provides codes for incorporated municipalities (e.g., cities and villages). The coding scheme generally follows the Federal Information Processing Standards (FIPS).

Coding of INCORP was based on a listing of codes used for the 1990 U.S. census. Many minor civil divisions that we encounter in the historical census data no longer exist because of political and administrative reorganization at the sub-county level. In these cases we assigned non-standard FIPS codes consistent with the present-day FIPS coding format.

Note that INCORP is state and county dependent. The codes must be read in combination with one of the state variables (STATEICP or STATEFIP) and the COUNTY variable.

Codes

INCORP is available in all 1850-1930 samples, except for the 1850, 1900, 1910, 1920 and 1930 100% files. INCORP is a 5-digit numeric variable that provides codes for incorporated municipalities (e.g., cities and villages). The coding scheme generally follows the Federal Information Processing Standards (FIPS). Coding of INCORP was based on a listing of codes used for the 1990 U.S. census. Many minor civil divisions that we encounter in the historical census data no longer exist because of political and administrative reorganization at the sub-county level. In these cases we assigned non-standard FIPS codes consistent with the present-day FIPS coding format. INCORP specific variable codes for missing, edited, or unidentified observations, observations not applicable (N/A), observations not in universe (NIU), top and bottom value coding, etc. are provided below by Census year (and data sample if specified).

User Note: INCORP codes must be read in combination with one of the state variables (STATEICP or STATEFIP) and the COUNTY variable.

INCORP Specific Variable Codes
See the Codes for Minor Civil Divisions and Incorporated Municipalities for detailed INCORP codes.

Comparability

INCORP is available in all 1850-1930 samples, except for the 1850, 1900, 1910, 1920 and 1930 100% files. For the 1940 1% file, information on incorporated places has not been numerically coded and is available only via the alphabetic variable INCSTR.

Universe

  • All households and group quarters. Not available in Alaska, Hawaii, Puerto Rico or in the 1880 100% population database.

Availability

United States
  • 2017: --
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  • 1990: --
  • 1980: --
  • 1970: --
  • 1960: --
  • 1950: --
  • 1940: --
  • 1930: 1%; 5%
  • 1920: 1%
  • 1910: 1%; 1.4% ovrsmp
  • 1900: 5%; 1%; 1.2% ovrsmp
  • 1880: All samples
  • 1870: All samples
  • 1860: All samples
  • 1850: 1%
Puerto Rico
  • 2017: --
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  • 1990: --
  • 1980: --
  • 1970: --
  • 1930: --
  • 1920: --
  • 1910: --

Flags

This variable has no flags.

Editing Procedure

There is no editing procedure available for this variable.