COUNTY · AL
Marengo County, Alabama
Marengo County is a county in Alabama with FIPS code 01091 and an estimated population of 18,684 (Census 2023), 48th largest of 67 in the state.
County facts
- Name
- Marengo County
- State
- Alabama
- Type
- county
- FIPS code
- 01091
- State FIPS
- 01
- Population (2023)
- 18,684
- Change since 2020
- -3.0%
- State rank
- 48 of 67
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Marengo County?
Marengo County, Alabama has the five-digit FIPS code 01091: 01 for the state and 091 for the county.
What state is Marengo County in?
Marengo County is in Alabama.
How do I know if an address is in this county?
Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.
Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.