![]() A second dataset applies 2010 RUCA classifications to ZIP code areas by transferring RUCA values from the census tracts in which they are located. In general, the smaller the estimate, the larger the degree of uncertainty associated with it. As with all survey data, ACS estimates are not exact because they are based on a sample. ![]() To derive estimates for small geographic units such as census tracts, information collected annually from over 3.5 million housing units was combined across 5 years (2006–10). Tract-to-tract commuting flow files were constructed from ACS data as part of a special tabulation for the Department of Transportation-the Census Transportation Planning Package. However, the use of census tracts instead of counties as building blocks for RUCA codes provides a different and more detailed geographic pattern of urban and rural areas.Ĭensus tracts are used because they are the smallest geographic building block for which commuting flow estimates are available from the U.S. We adopted OMB's metropolitan and micropolitan terminology to highlight the underlying connectedness between the two classification systems. We applied similar criteria to measures of population density, urbanization, and daily commuting to identify urban cores and adjacent territory that is economically integrated with those cores. RUCA codes are based on the same theoretical concepts used by the Office of Management and Budget (OMB) to define county-level metropolitan and micropolitan areas. The rural-urban commuting area (RUCA) codes, a detailed and flexible scheme for delineating sub-county components of rural and urban areas, have been updated using data from the 2010 decennial census and the 2006–10 American Community Survey (ACS). To determine a census tract, please see the Federal Financial Institutions Examination Council's FFIEC Geocoding/Mapping System. 2010 Rural-Urban Commuting Area (RUCA) Codes We will update this notice as more information becomes available. Currently, we estimate that the 2020 RUCA codes would be released no earlier than Fall 2024. ERS’s RUCA codes also require a third input: updated commuting data from the American Community Survey, measured at the census tract level. USDA, Economic Research Service (ERS) will update its RUCA codes using population data from the 2020 Census and the latest urban area delineations from the Census Bureau, which were released in December 2022. Planned 2020 RUCA code information release update: Plans are underway for the decennial update of the RUCA codes, however the release date is uncertain.
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