Census of Population and Housing, 2010 [United States]: Summary File 2 With National Update (ICPSR 34755)

Published: Jul 18, 2013

Principal Investigator(s):
United States Department of Commerce. Bureau of the Census


Version V1

This data collection contains summary statistics on population and housing subjects derived from the responses to the 2010 Census questionnaire. Population items include sex, age, average household size, household type, and relationship to householder such as nonrelative or child. Housing items include tenure (whether a housing unit is owner-occupied or renter-occupied), age of householder, and household size for occupied housing units. Selected aggregates and medians also are provided. The summary statistics are presented in 71 tables, which are tabulated for multiple levels of observation (called "summary levels" in the Census Bureau's nomenclature), including, but not limited to, regions, divisions, states, metropolitan/micropolitan areas, counties, county subdivisions, places, ZIP Code Tabulation Areas (ZCTAs), school districts, census tracts, American Indian and Alaska Native areas, tribal subdivisions, and Hawaiian home lands. There are 10 population tables shown down to the county level and 47 population tables and 14 housing tables shown down to the census tract level. Every table cell is represented by a separate variable in the data.

Each table is iterated for up to 330 population groups, which are called "characteristic iterations" in the Census Bureau's nomenclature: the total population, 74 race categories, 114 American Indian and Alaska Native categories, 47 Asian categories, 43 Native Hawaiian and Other Pacific Islander categories, and 51 Hispanic/not Hispanic groups. Moreover, the tables for some large summary areas (e.g., regions, divisions, and states) are iterated for portions of geographic areas ("geographic components" in the Census Bureau's nomenclature) such as metropolitan/micropolitan statistical areas and the principal cities of metropolitan statistical areas.

The collection has a separate set of files for every state, the District of Columbia, Puerto Rico, and the National File. Each file set has 11 data files per characteristic iteration, a data file with geographic variables called the "geographic header file," and a documentation file called the "packing list" with information about the files in the file set. Altogether, the 53 file sets have 110,416 data files and 53 packing list files. Each file set is compressed in a separate ZIP archive (Datasets 1-56, 72, and 99). Another ZIP archive (Dataset 100) contains a Microsoft Access database shell and additional documentation files besides the codebook.

The National File (Dataset 99) constitutes the National Update for Summary File 2. The National Update added summary levels for the United States as a whole, regions, divisions, and geographic areas that cross state lines such as Core Based Statistical Areas.

United States Department of Commerce. Bureau of the Census. Census of Population and Housing, 2010 [United States]: Summary File 2 With National Update. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2013-07-18. https://doi.org/10.3886/ICPSR34755.v1

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Datasets 1-56 and 72 are numbered according to the state FIPS codes.

The presentation of the tables for any characteristic iteration is subject to a population threshold of 100 or more people. That is, if there are fewer than 100 people for a given characteristic iteration in a specific geographic area (e.g., a specific county subdivision or census tract), the tables for that characteristic iteration are not available for that area.

All persons and living quarters in the United States including Puerto Rico

census/enumeration data




  • Data in this collection are available only to users at ICPSR member institutions.

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