Maryland

Summary File 2 contains 100-percent United States decennial Census data, which is the information compiled from the questions asked of all people and about every housing unit. The Final National component of Summary File 2 describes the entire United States. Population items include sex, age, race, Hispanic or Latino origin, household relationship, and group quarters occupancy. Housing items include occupancy status, vacancy status, and tenure (owner-occupied or renter-occupied).

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.

Summary File 3 contains sample data, which is the information compiled from the questions asked of a sample of all people and housing units in the United States.

Summary File 2 contains 100-percent United States decennial Census data, which is the information compiled from the questions asked of all people and about every housing unit. Population items include sex, age, race, Hispanic or Latino origin, household relationship, and group quarters occupancy. Housing items include occupancy status, vacancy status, and tenure (owner-occupied or renter- occupied). The 100-percent data are presented in 36 population tables ("PCT") and 11 housing tables ("HCT") down to the census tract level.

Part of the Census 2000 geographic product series, Census Tract Relationship Files (CTRF) show how 1990 census tracts relate to 2000 census tracts. The files consist of one record for each 1990 census tract/2000 census tract spatial set. A spatial census tract set is defined as the area that is uniquely shared between a 1990 census tract and a 2000 census tract. The CTRF consist of sets of four files for each of the United States and territories. The purpose of these files is to assist users in determining the relationships between 1990 and 2000 census tracts.

This data collection contains four tables derived from the Census 2000 100-percent and sample data:Table DP-1. Profile of General Demographic CharacteristicsTable DP-2. Profile of Selected Social CharacteristicsTable DP-3. Profile of Selected Economic CharacteristicsTable DP-4. Profile of Selected Housing CharacteristicsThe 100-percent data were obtained from the questions asked of every person and housing unit enumerated in Census 2000, while the sample data were taken from the questions asked of a sample of persons and housing units.

Summary File 2 contains 100-percent United States decennial Census data, which is the information compiled from the questions asked of all people and about every housing unit. Population items include sex, age, race, Hispanic or Latino origin, household relationship, and group quarters occupancy. Housing items include occupancy status, vacancy status, and tenure (owner occupied or renter occupied). The 100-percent data are presented in 36 population tables ("PCT") and 11 housing tables ("HCT") down to the census tract level.

The Public Use Microdata Sample (PUMS) 5-Percent Sample contains household and person records for a sample of housing units that received the "long form" of the 1990 Census questionnaire. Data items cover the full range of population and housing information collected in the 1990 Census, including 500 occupation categories, age by single years up to 90, and wages in dollars up to $140,000. Each person identified in the sample has an associated household record, containing information on household characteristics such as type of household and family income.

The Public Use Microdata Sample (PUMS) 1-Percent Sample contains household and person records for a sample of housing units that received the "long form" of the 1990 Census questionnaire. Data items include the full range of population and housing information collected in the 1990 Census, including 500 occupation categories, age by single years up to 90, and wages in dollars up to $140,000. Each person identified in the sample has an associated household record, containing information on household characteristics such as type of household and family income.

This file, the 1990 counterpart to the CENSUS OF POPULATION, 1980 [UNITED STATES]: EQUAL EMPLOYMENT OPPORTUNITY SPECIAL FILE (ICPSR 9026), is based on civilian labor force data from the 1990 Decennial Census and provides occupational and educational attainment data to support affirmative action planning for equal employment opportunity. The file consists of two sets of crosstabulations for the United States civilian labor force. The first set of tables provides data for 512 occupational categories by sex, race, and Hispanic origin.