A Combined Statistical Area (CSA) is a geographic region that combines two or more adjacent Core Based Statistical Areas (CBSAs) with significant economic and social ties, based on commuting patterns. CSAs are defined by the US Office of Management and Budget (OMB) and are used for demographic and economic analysis, while the individual CBSAs retain their own distinct identities within the larger CSA. So CSAs are county based, like CBSAs, and can include both metropolitan and micropolitan CBSAs. The name of the CSA usually indicates the CBSAs that comprise it. For example, the Birmingham-Cullman-Talladega CSA is the combination of the Birmingham, Cullman, and Talladega CBSAs.
The map and table below give geographic data on the nine CSAs that lie completely or partially in Alabama. The land and water areas are given in square miles.
In the map below, the CBSAs and the counties can be added as area layers, and the census-designated central points can be added as a point layer using the layer control. Click on a feature to view summary information about the feature.
| CSA | GeoID | Alabama Counties | Tracts | Population | Housing | Land | Water |
|---|---|---|---|---|---|---|---|
There are 30 counties in Alabama that are not part of a CSA: Barbour, Bullock, Butler, Calhoun, Cherokee, Choctaw, Clarke, Clay, Cleburne, Conecuh, Covington, Crenshaw, Escambia, Etowah, Fayette, Greene, Hale, Lamar, Marengo, Marion, Monroe, Perry, Pickens, Pike, Randolph, Sumter, Tuscaloosa, Washington, Wilcox, and Winston.