Alabama Counties by Population (2025)

There are 67 counties in Alabama.

The most populous county in Alabama is Jefferson County, home to the city of Birmingham, with a population of 659,300. This represents a population growth rate of 0.17% since the last census. Jefferson is the only Alabama county with more than 500,000 residents.

Other major counties in Alabama include:

• Mobile County: 413,757 (City of Mobile)
• Madison County: 366,519
• Montgomery County: 225,763
• Baldwin County: 218,022
• Shelby County: 215,707
• Tuscaloosa County: 208,911

Of these counties, Baldwin County experienced the most growth with a growth rate of 19.07% since the census. Only Montgomery County experienced a decline, with a growth rate of -1.63%.

Alabama Counties with Fewest Residents

The least populated county in Alabama is Greene County with 8,233 residents, which is down 8.47% from the last census. Alabama has 21 counties under 20,000 residents, and all but one of them have experienced a population decline over the last decade.

Other small Alabama counties include:

• Perry County: 9,140
• Lowndes County: 9,974
• Bullock County: 10,138
• Wilcox County: 10,627
• Coosa County: 10,715

Of these counties, Perry County experienced the most dramatic decline with a growth rate of -13.50%.

Alabama Counties with Rapid Growth

Baldwin County, Alabama experienced the most rapid growth in the state since the last census, growing by 19.07% to 218,022 residents.

Other counties with rapid growth include:

• Lee County: 16.43%
• Limestone County: 15.63%
• Shelby County: 10.0%

These are the only counties with double-digit growth rates.

Alabama Counties with Population Decline

The most dramatic population decline occurred in Macon County with a growth rate of -14.26% since the last census, dropping the population to 18,439. Macon County was followed by:

• Perry County: -13.50%
• Dallas County: -12.65%