• county
  • FIPS 01091
  • Largest town: Demopolis

Marengo County, Alabama

Marengo County had 18,512 residents in the Census Vintage 2024 estimate, on 976.9 square miles of land. It ranks 47th of 67 in Alabama by population and 11th by land area.

Population
18,512
#47 of 67 in Alabama · #1,903 in US
Area
976.9 sq mi
#11 of 67 in Alabama · #710 in US
Density
19 / sq mi
#55 of 67 in Alabama · #2,280 in US
Median household income
$47,228
#55 of 67 in Alabama · #2,882 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Marengo County within Alabama. Pin: Montgomery.

Measure from here

Tools and pages that start from Marengo County

Marengo County population, land area and income

Marengo County had 18,512 residents in the Census Vintage 2024 estimate, on 976.9 square miles of land. It ranks 47th of 67 in Alabama by population and 11th by land area. That works out to 18.9 people per square mile, below the US average of 96.3, and below the national county median.

The median county-equivalent in Alabama has 33,813 residents; Marengo County is somewhat smaller.

Its SAIPE 2023 median household income of $47,228 is in the bottom quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

18,512

3144th1st

1903rd of 3,144 (US)

Land area

977 sq mi

3144th1st

710th of 3,144 (US)

Density

18.9 / sq mi

3144th1st

2280th of 3,144 (US)

Median household income

$47,228

3143rd1st

2882nd of 3,143 (US)

Rank within Alabama (67)

Population

18,512

67th1st

47th of 67 (AL)

Land area

977 sq mi

67th1st

11th of 67 (AL)

Density

18.9 / sq mi

67th1st

55th of 67 (AL)

Median household income

$47,228

67th1st

55th of 67 (AL)

How Marengo County's population changed since 2020

Marengo County lost 759 residents between the July 2020 and July 2024 estimates, a drop of 3.9%. That ranks 58th of 67 in Alabama for growth. The median Alabama county changed by +0.2%, and the state as a whole by +2.5%.

Since the April 2020 estimates base, Marengo County recorded 954 births and 1,322 deaths, a natural change of -368. Net international migration added +63 and net domestic migration, people moving to or from other US counties, came to -499. The largest single component was domestic migration, which removed 499 people.

19.3k202019.0k202118.8k202218.7k202318.5k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
954
Deaths
1,322
Net international migration
+63
Net domestic migration
-499
Change, July 2023 to July 2024
-193

Where Marengo County is

The Census internal point of Marengo County is at 32.247600, -87.791100. It sits in UTM zone 16N. The map shades Alabama's 67 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Marengo County outlined. Dots are towns of 1,000+ people with residents in it.

Clay County: +0.2%Baldwin County: +12.2%Coffee County: +5.2%Fayette County: -2.9%Chilton County: +4.9%Perry County: -8.7%Lamar County: -2.9%Morgan County: +2.2%Bibb County: +0.4%Butler County: -4.1%Barbour County: -2.5%Franklin County: -0.6%Chambers County: -2.2%Macon County: -6.7%Marshall County: +4.6%DeKalb County: +2.0%Russell County: -0.7%Geneva County: +2.1%Houston County: +1.9%Greene County: -7.5%Talladega County: -0.1%Monroe County: -3.3%Mobile County: -0.5%Covington County: +0.6%Cullman County: +5.1%Lauderdale County: +3.7%Shelby County: +5.4%Clarke County: -3.7%Lowndes County: -7.8%St. Clair County: +5.7%Choctaw County: -4.5%Blount County: +1.8%Dallas County: -6.9%Conecuh County: -3.8%Elmore County: +3.6%Autauga County: +4.3%Henry County: +5.6%Montgomery County: -1.1%Jefferson County: -1.5%Hale County: +2.3%Jackson County: +2.4%Madison County: +8.4%Washington County: -2.0%Bullock County: -3.2%Pike County: +0.7%Crenshaw County: -0.4%Dale County: +1.6%Lee County: +7.4%Cleburne County: +5.6%Tallapoosa County: -1.4%Lawrence County: +1.5%Pickens County: -2.4%Colbert County: +2.6%Winston County: +1.6%Marion County: +0.5%Calhoun County: +0.2%Etowah County: -0.2%Randolph County: +4.4%Wilcox County: -6.3%Tuscaloosa County: +3.7%Sumter County: -4.8%Walker County: +0.2%Cherokee County: +4.6%Escambia County: -0.2%Limestone County: +14.1%Coosa County: -0.5%Marengo County: -3.9%
Change 2020 to 2024
  1. < -3.2%
  2. < -0.5%
  3. < +1.6%
  4. < +4.3%
  5. ≥ +4.3%
no data

Orange pin: Marengo County internal point. Dark pin: Montgomery.

Internal point

Decimal
32.247600, -87.791100
DMS
32°14'51.36"N 87°47'27.96"W
UTM
16N 425476.9E 3568155.3N
Geohash
dj9x6q2rz
Plus code
864J66X5+2H

Towns in Marengo County

2 incorporated places of 1,000+ people have residents in Marengo County, 8,539 people together, or 46% of the county. Each figure counts only the part of the town inside Marengo County; towns marked "part" extend into another county. The largest is Demopolis with 6,724.

  1. 01Demopolis6,724
  2. 02Linden1,815
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Marengo County

The Census 2024 county adjacency file lists 8 neighbors for Marengo County. The most populous is Dallas County, AL, with 35,545 residents. Distances run between Census internal points in a straight line.

Distance to Montgomery and the nearest big city

Montgomery is 87.5 miles E of Marengo County's internal point in a straight line. The nearest place of 100,000 or more is Tuscaloosa, AL (population 114,288), 69.8 miles away. The nearest place of 10,000 or more is Selma, AL (population 16,312), 45.6 miles away.

Marengo County FIPS code

The FIPS code of Marengo County is 01091: state code 01 for Alabama plus county code 091. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $47,228.

Questions people ask

What is the population of Marengo County, Alabama?

The Census Vintage 2024 estimate for July 1, 2024 is 18,512. That is down 759 people (3.9%) from the July 2020 estimate of 19,271.

What is the FIPS code of Marengo County?

01091. The first two digits (01) are Alabama; the last three (091) identify the county.

What is the largest town in Marengo County?

Demopolis, with 6,724 residents inside Marengo County in 2024.

Which counties border Marengo County?

8 county-equivalents border it in the Census 2024 adjacency file: Dallas County, AL; Clarke County, AL; Hale County, AL; Choctaw County, AL; Sumter County, AL; Wilcox County, AL; Perry County, AL; Greene County, AL.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.