Combined Statistical Areas
Introduction
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.
- Definition: A CSA is formed by two or more adjacent CBSAs (which include both metropolitan and micropolitan areas) that have an
employment interchange measure
of 15 or more.
- Purpose: CSAs provide a broader view of an area's interconnected economy and population, which is useful for demographic analysis and business planning.
- Structure: Even though they are grouped, the smaller metropolitan and micropolitan areas within a CSA maintain their separate identities.
- Examples: A CSA could be made up of multiple metropolitan statistical areas, a metropolitan area and a micropolitan statistical area, or multiple micropolitan areas.
- Names: 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.
Map
In the map below, Alabama counties can be added as an area layer, 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.
Table
| CSA |
GeoID |
Alabama Counties |
Tracts |
Population |
Housing |
Land |
Water |
|
|
|
|
|
|
|
|
Non-CSA Counties
There are 30 counties in Alabama that are not part of a CSA.
Combined Demographics
- Census Tracts: 312
- Population: 956,404
- Housing: 456,679
- Land: 23658.25
- Water: 286.64
List of Non-CSA Counties
- Barbour County
- Bullock County
- Butler County
- Calhoun County
- Cherokee County
- Choctaw County
- Clarke County
- Clay County
- Cleburne County
- Conecuh County
- Covington County
- Crenshaw County
- Escambia County
- Etowah County
- Fayette County
- Greene County
- Hale County
- Lamar County
- Marengo County
- Marion County
- Monroe County
- Perry County
- Pickens County
- Pike County
- Randolph County
- Sumter County
- Tuscaloosa County
- Washington County
- Wilcox County
- Winston County