DOI: 10.3886/icpsr09783.v1
title: Census of Population and Housing, 1990 [United States]: Public Law (P.L.) 94-171 Data (One-Half Sample Adjusted Redistricting File)
title: Version 1

description: Public Law 94-171, enacted in 1975, requires the Census 
 Bureau to provide redistricting data in a format requested by state 
 governments. Within one year following the 1990 decennial Census (by 
 April 1, 1991), the Census Bureau provided the governor and legislature 
 of each state with the population data needed to redraw legislative 
 districts. This collection contains the same substantive and geographic 
 variables as the original Public Law 94-171 files [see CENSUS OF 
 POPULATION AND HOUSING, 1990 [UNITED STATES]: PUBLIC LAW (P.L.) 94-171 
 DATA (ICPSR 9516)] but with the population counts adjusted for 
 undernumeration. Adjusted Public Law 94-171 counts are supplied for a 
 sample of one-half of blocks in the United States and a complete 
 selection of areas with 1,000 or more persons. Each state file provides 
 data for the state and its subareas in the following order: state, 
 county, voting district, county subdivision, place, and block. 
 Additionally, complete summaries are provided for the following 
 geographic areas: county subdivision, place, consolidated city, state 
 portion of American Indian and Alaska Native area, and county portion 
 of American Indian and Alaska Native area. Area characteristics such as 
 land area, water area, latitude, and longitude are provided. Summary 
 statistics are provided for all persons, for persons 18 years old and 
 over, and for housing units in the geographic areas. Counts by race and 
by Hispanic and non-Hispanic origin are also recorded.
description: Datasets: 
DS0: Study-Level Files
DS1: Alabama
DS2: Alaska
DS4: Arizona
DS5: Arkansas
DS6: California
DS8: Colorado
DS9: Connecticut
DS10: Delaware
DS11: District of Columbia
DS12: Florida
DS13: Georgia
DS15: Hawaii
DS16: Idaho
DS17: Illinois
DS18: Indiana
DS19: Iowa
DS20: Kansas
DS21: Kentucky
DS22: Louisiana
DS23: Maine
DS24: Maryland
DS25: Massachusetts
DS26: Michigan
DS27: Minnesota
DS28: Mississippi
DS29: Missouri
DS30: Montana
DS31: Nebraska
DS32: Nevada
DS33: New Hampshire
DS34: New Jersey
DS35: New Mexico
DS36: New York
DS37: North Carolina
DS38: North Dakota
DS39: Ohio
DS40: Oklahoma
DS41: Oregon
DS42: Pennsylvania
DS44: Rhode Island
DS45: South Carolina
DS46: South Dakota
DS47: Tennessee
DS48: Texas
DS49: Utah
DS50: Vermont
DS51: Virginia
DS53: Washington
DS54: West Virginia
DS55: Wisconsin
DS56: Wyoming
DS83: SPSS Control Cards for All Parts
DS84: SAS Control Cards for All Parts
description: All persons and housing units in the United States.
description: (1) Census tracts and block groups are not included in 
 these files. (2) These data files were obtained from the United States 
 House of Representatives, who received them from the Census Bureau 
 accompanied by the following caveats: "The numbers contained herein 
 are not official 1990 decennial Census counts. The numbers represent 
 estimates of the population based on a statistical adjustment method 
 applied to the official 1990 Census figures using a sample survey 
 intended to measure overcount or undercount in the Census results. On 
 July 15, 1991, the Secretary of Commerce decided not to adjust the 
 official 1990 decennial Census counts (see 56 Fed. Reg. 33582, July 22, 
 1991). In reaching his decision, the Secretary determined that there 
 was not sufficient evidence that the adjustment method accurately 
 distributed the population across and within states. The numbers 
 contained in these tapes, which had to be produced prior to the 
 Secretary's decision, are now known to be biased. Moreover, the tapes 
 do not satisfy standards for the publication of Federal statistics, as 
 established in Statistical Policy Directive No. 2, 1978, Office of 
 Federal Statistical Policy and Standards. Accordingly, the Department 
 of Commerce deems that these numbers cannot be used for any purpose 
 that legally requires use of data from the decennial Census and assumes 
 no responsibility for the accuracy of the data for any purpose 
 whatsoever. The Department will provide no assistance in interpretation 
or use of these numbers."