Home > Data Services > Catalog . Restricted Data . Census . ACS

Search Data Services

Meta Search
search across all the following databases:

Data Catalog
Data and documentation

Common questions and answers.

Entire collection of data resources.

Latest Data News

RSS Feed icon

Baking a cake without ingredients

Where has John Thompson Gone?

The Gray Lady Speaks

How to Measure Affordable Housing? Include Transportation Costs

Maybe just a nothing burger, but. . .

Data Services Knowledge Base


Is it possible to define metro areas by zip codes? We have a dataset with zip codes and would like to tie the respondent to the appropriate metropolitan area.


This won't be perfect, but it will work pretty well. There is a geographic correspondence engine.


If you put in zip code as the Source and one of the metro choices as Target you'll get a mapping of zip codes to metro areas. You could even map them to counties and build the metro areas via the OMB definitions.

In the case of a county, a zip code will definitely be split across some counties. In that case, you get a weight that says 73% of this zip code is in County A and 27% is in County B. The weights are by Population as default, but you have a choice of Land Area or Housing Units.

Just in case you want to do this for 1990, here's the correspondence engine for that era:

Mable/Geocorr 1990

Annotated Resources:

Direct Links:

Related Question Groups: