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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They are similar to census tracts in this regard. They all end up with the same value on vacancy rates using this method. If you click on the listing report format link you should see a report, the first few lines of which should look like this:.

And in a densus over 5 percent of the time, counties and PUMAs share exactly the same definition – at least based on the current definitions.

A good example pyma to the current topic involves using the application to generate a report showing how PUMAs relate to counties in the state of Colorado. From Wikipedia, the free encyclopedia. There is a cooperative program between the Census Bureau and the states that allows local input to suggest boundaries for them.

Creating County-Level Statistics from Public Use Microdata Areas (PUMAS)

As mentioned, they were first used in ACS summary data products starting with mivrodata released in calendar year The original file downloaded from American FactFinder is here.


This means that around 60 percent of counties meet the requirements for the 3-year data release.

If you click on the listing report format link you should see a report, the first few lines of which should look like this: This example shows us how to relate the Pu,a areas to counties. The counties are shaded based on their population sizes: It is like somebody ran a bunch of Geocorr runs see below for a description of the Geocorr application and merged them altogether in this single resource.

Public Use Microdata Area

The value of 1. In addition, sometimes items are not available in the tabular data. Retrieved 23 October PUMAs are assigned 5-digit codes that are unique within state. There is no way to show puna detail on a US-based map. To do this, invoke the application and fill out the form as follows:.

Prior to there were actually two kinds of PUMAs: In the data files, if a record is based on a survey conducted in or microxata the variable puma00 is defined, and puma10 has a value of ; otherwise survey taken in you get a value of for puma00 and a useful value for puma Detailed tables in our basetbls and btabs5yr subdirectories of the more recent acs[yyyy] subdirectories also contain data at the PUMA level.

Export it as a csv database file. 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. Like census tracts, many PUMAs retain their definitions across decades.

Scroll down and find your state and click on it. The first “alloc factor” column has a value of 0. The left out counties are concentrated in the Great Plains, although all but 5 states and the District of Columbia have at least one county that is dependent on 5-year data. microddata


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. Only seven of the 55 counties of West Virginia were large enough to receive estimates from the ACS. Why would you care or ever need to know this? Likewise, the percent of ACS questionnaires that were returned by mail is only available from the microdata files.

PUMAs allow the Census to publish census data for sub-state areas throughout every state. They are the only sub-state geographic identifiers on the PUMS records. Starting withthe local agencies that participated in the PUMA boundary suggestion program were asked to provide suggested names for these areas. Because they are required to have a minimum population of , all PUMA areas exceed the 65, population threshold, thus insuring that there will be single-year ACS data for them published each year.

All About Public Use Microdata Areas (PUMAs)

By using this site, you agree to the Terms of Use and Privacy Policy. Included on this page is a link to a set of individual PUMA maps organized by state.

The last column, county to puma12 alloc factor, is the allocation factor going the other way.