Using the US Census Tract API I can search for the age population in different parts of the country


returns list of women aged 18 by county and PCT0120021 for men.


How could I look up the corresponding information by Census tract?
Something like for=tract:* but that gives me error messages error: unknown/unsupported geography heirarchy.


1 Answer 1


You have to provide a state and county in your query to retrieve Census tract level information.

This does not work:

http://api.census.gov/data/2010/sf1?key=[key]&get= PCT0120125&for=tract:*

but this works:


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