DOI: 10.3886/icpsr13400
title: Census of Population and Housing, 2000 [United States]: Public Law (P.L.) 94-171 Adjusted Data
title: Archival Version

description: The numbers contained in this study are released pursuant
to the order of the United States Court of Appeals for the Ninth
Circuit in Carter v. Department of Commerce, 307 F.3d 1084. These
numbers are not official Census 2000 counts. These numbers are
estimates of the population based on a statistical adjustment method,
utilizing sampling and modeling, applied to the official Census 2000
figures. The estimates utilized the results of the Accuracy and
Coverage Evaluation (A.C.E.), a sample survey intended to measure net
over- and undercounts in the census results. The Census Bureau has
determined that the A.C.E. estimates dramatically overstate the level
of undercoverage in Census 2000, and that the adjusted Census 2000
data are, therefore, not more accurate than the unadjusted data. On
March 6, 2001, the Secretary of Commerce decided that unadjusted data
from Census 2000 should be used to tabulate population counts reported
to states and localities pursuant to 13 U.S.C. 141(c) (see 66 FR
14520, March 13, 2001). The Secretary's decision endorsed the
unanimous recommendation of the Executive Steering Committee for
A.C.E. Policy (ESCAP), a group of 12 senior career professionals
within the Census Bureau. The ESCAP, in its recommendation against the
use of the statistically adjusted estimates, had noted serious
reservations regarding their accuracy. In order to inform the Census
Bureau's planned October 2001 decision regarding the potential use of
the adjusted estimates for non-redistricting purposes, the agency
conducted extensive analyses throughout the summer of 2001. These
extensive analyses confirmed the serious concerns the agency had noted
earlier regarding the accuracy of the A.C.E. estimates. Specifically,
the adjusted estimates were determined to be so severely flawed that
all potential uses of these data would be inappropriate. Accordingly,
the Department of Commerce deems that these estimates should not 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, including the
U.S. Census Bureau, will provide no assistance in the interpretation
or use of these numbers. The collection contains four tables: (1) a
count of all persons by race (Table PL1), (2) a count of Hispanic or
Latino and a count of not Hispanic or Latino by race of all persons
(Table PL2), (3) a count of the population 18 years and older by race
(Table PL3), and (4) a count of Hispanic or Latino and a count of not
Hispanic or Latino by race for the population 18 years and older
(Table PL4).
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
DS72: Puerto Rico
description: All persons and housing units in the United States in
2000.
description: The data are provided in three segments (files)
per state: the Geographic Header, Tables PL1 and PL2, and Tables PL3
and PL4. The Geographic Header segments are fixed-format ASCII text
files, while the Table segments are comma-delimited ASCII files. The
Geographic Header has 80 variables and the Table segments have 149
variables each, for a total of 378 variables when the segments are
combined.The SAS Merge Program (Part 90) is provided, but not
supported, by the United States Census Bureau. Users will need to
merge the three segments for each state into a SAS dataset to use the
data effectively.The data file part numbers are not consecutive.
They correspond to FIPS codes for states.