Census Public Use Microdata Area (PUMA) Reference Maps – Illinois. The total number of map sheets is listed next to each entity name. The version of Public Use Microdata Areas (PUMAs) is the lowest level of PUMA can be downloaded from the Census Bureau’s Reference Map. The version of Public Use Microdata Areas (PUMAs) is the lowest level of geography identified in the census 5% sample and the For example, in the 3-year ACS sample, PUMA codes are reported for State, PUMA and Super-PUMA Maps, Detailed contents of PUMAs and super-PUMAs.

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A reference information section provides general links to various related documents and sites. The user has to decide whether to use the known value when available e.

Read and follow instructions for use.

The dataset also contains a set of key indicator variables from a recent set of ACS summary data. You’ll get an excellent overview map of the state, clearly displaying the PUMA boundaries on a based map that shows county boundaries and major towns.

This page was last edited on 19 Januaryat Two of the more important changes are: Large urban counties are typically subdivided into multiple PUMAs with boundaries based on census tracts. From the Select one or more source geographies: But normally we prefer a map product that can show us an entire state’s worth of PUMAs or a metro region overview.

PUMAs are assigned 5-digit codes that are unique within state. Microcata statistical area list Combined us area Core-based statistical area list Metropolitan statistical area list Micropolitan statistical area mas New England city and town area Urban area list.


Views Read Edit View history. In the data files, if a record is based on a survey conducted in or then the variable puma00 is defined, and puma10 has a value of ; otherwise survey taken in you get a value of for puma00 pubilc a useful value for puma Urban areas get their own separate inset maps. The Census Bureau did not publish any summary data for these units based on the census. There have been some very noteable changes. Having such locally assigned descriptive names makes these entities much more valuable as summary units in reports for users who have not memorized the PUMA codes.

All About Public Use Microdata Areas (PUMAs)

Block Block group Tract. But now that these areas are being used to publish summary tables based on the American Community Survey data, they have become much more widely used. The five-year data have no population limits, but it is also not very timely. This will not make a very nice thematic map, although it would allow one to publish annual characteristics.

For example, the ACS publishes detailed data every year, but due to their sampling procedure only publishes data for census area that have more than 65, People. Data published for vintage years and earlier use the old PUMAs as the units. For help, here is the input file used in this example. However, it would be possible to aggregate data at the census tract level to create such summaries.

For instance, Nevada County has a vacancy rate of However, there are population restrictions for the data. Starting withthey can only comprise congiguous counties or census tracts. It provides information regarding the PUMA’s location by indicating intersections with other more familiar geographies. Ignore the rest of the options.


Only seven of the 55 counties of West Virginia were large enough to receive estimates from the ACS. In Missouri only we created an informal table that assigned a short descriptive name to each of the Missouri PUMAs. In less populated rural areas, PUMAs are typically comprised of smaller population-wise contiguous counties.

A little over 25 percent of counties have populations of 65, or more. They are the only sub-state pumq identifiers on the PUMS records. PUMAs that represent portions of a large county will have the same first 3 digits with the last 2 digits being assigned as “01”, “02”, etc. By using this site, you agree to the Terms of Use and Privacy Policy.

Retrieved from ” https: And, urban areas with multi-PUMA counties show up as dark map. Where population constraints permit, they should not cross metropolitan area boundaries. Likewise, the percent of ACS questionnaires that were returned by mail is only available from the microdata files. Prior toPUMAs were not assigned formal names.

Public Use Microdata Areas (PUMAs) – – MCDC

Detailed tables in our basetbls and btabs5yr subdirectories of the more recent acs[yyyy] subdirectories also contain data at the PUMA level. United States Census Bureau geography.

The last column, county to puma12 alloc factor, is the allocation factor going the other way. Super PUMAs are being done away with starting with the definitions. Microdwta labels have been quite useful for reports that display data at the PUMA level. Michigan Population Studies Center. PUMAs may not cross state boundaries.