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Federal Information Processing Standards (FIPS55)


The Population Research Institute (PRI) is currently evaluating the SODAPOP service. The ability to extract a data set containing a subset of variables will not be supported after September 15, 2016.

The data collections in SODAPOP will still be available from the PRI. If you should have concerns about this change to the SODAPOP service or need to access some of the data, contact the PRI's Computational and Spatial Analysis (CSA) core at

STIPULATIONS FOR USE: This data is only available for use by PENN STATE researchers (FIPS55 data maintenance is the responsibility of the U.S. Geological Survey (USGS). Under the authority of the National Institute of Standards and Technology (NIST), the USGS is disseminating the data, and is the only Federal agency authorized by NIST to do so).


Federal Information Processing Standard (FIPS) 55-3 provides codes for named popu lated places, primary county divisions (such as townships and census county divisions), American Indian and Alaska Native areas, and several kinds of facilities. It also provides comparable codes for counties and equivalent legal and statistical entities. In addition to the entity name and its code, the guideline provides other identifying and cross-reference information for each file entry.

Download FIPS55 File


This guideline covers the 50 States, the District of Columbia, Puerto Rico, and the outlying areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, the Virgin Islands of the United States, and United States Minor Outlying Islands) and freely associated areas (the Federated States of Micronesia, the Marshall Islands and the Republic of Palau) of the United States. For each State, the District of Columbia, Puerto Rico, and outlying areas, the guideline records all incorporated places, census designated places, county subdivisions, counties and statistically equivalent entities and their primary divisions as recognized by the U.S. Bureau of the Census. It also includes all American Indian and Alaska Native areas included in the last census, and a list of many other named populated locations.

VERSION: FIPS 55-3 supersedes FIPS 55-2 in its entirety and incorporates technical changes that have been issued by the U.S. Geological Survey, Department of the Interior, and the Bureau of the Census, Department of Commerce. Several categories of locational entities have been dropped in FIPS 55-3; these are documented in the text. In addition, the text of FIPS 55-3 contains minor editorial changes and updates from the text of FIPS 55-2.

WHY ACCESS THE DATA THROUGH SODAPOP: Provides an easy way to combine all variables/codes in one data file.  Data available for download from USGS/ITL can only be selected by state or by place names or codes.

DATA OBTAINED FROM:  U.S. Geological Survey (under authority of NIST)

(out of the ITL at the National Institute of Standards and Technology )
USGS FIPS55 Web Page

US Census Bureau