Marengo County, Alabama Demographics 2026

Demographic data: ACS 2020–2024 five-year estimates. Sources and methodology

Marengo County, Alabama has a population of 18,851, the 47th most populous county in Alabama. The median household income is $43,825 and the median home value is $107,400. The poverty rate is 21.9%.

Marengo County Quick Facts

Population 18,851

Median Household Income $43,82590% MOE ±$5,429

Median Home Value $107,40090% MOE ±$10,723

Poverty Rate 21.9%90% MOE ±3.4 pts

Unemployment Rate 4.1%90% MOE ±2.1 pts

Median Age 41.4 years90% MOE ±1.5 years

Homeownership Rate 70.3%90% MOE ±2.8 pts

Affordability Ratio 2.5x

Bachelor's Degree+ 19.4%90% MOE ±3.0 pts

Adults 25+ with high school education or higher 85.8%

Cities/Places 10

Population 18,851 47th of 67

Median Income $43,825 32% lower than state

Poverty Rate 21.9%

Unemployment 4.1%

How Marengo County Changed

Change from the non-overlapping 2015–2019 ACS period to 2020–2024. Earlier dollar figures are adjusted to 2024 dollars; changes marked “no clear change” are within the combined 90% margins of error.

Metric	2015–2019	2020–2024	Change
Population	19,321	18,851	-2.4%
Median household income	$40,910	$43,825	No clear change (+7.1%)
Median home value¹	$103,872	$107,400	No clear change (+3.4%)
Median gross rent	$693	$716	No clear change (+3.3%)

¹ The Census Bureau changed its home-value inflation adjustment beginning with the 2022 ACS; interpret that comparison with additional caution.

Median Household Income

Marengo

$43,825

$63,999

National

$80,734

Median Home Value

Marengo

$107,400

$209,900

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 34.4%

$25K-$50K 19.7%

$50K-$100K 22.4%

$100K+ 23.5%

Detailed income brackets

Under $10K

9.9%

$10K-$15K

10.6%

$15K-$20K

8.0%

$20K-$25K

5.9%

$25K-$30K

4.9%

$30K-$35K

4.9%

$35K-$40K

2.8%

$40K-$45K

4.0%

$45K-$50K

3.1%

$50K-$60K

5.3%

$60K-$75K

5.1%

$75K-$100K

12.1%

$100K-$125K

8.7%

$125K-$150K

3.4%

$150K-$200K

5.2%

$200K+

6.2%

Employment

4.1% Unemployment Rate State: 4.7%|National: 5.2%

50.9% Labor Force Participation

Housing Overview

Owner 70.3%

Renter 29.8%

Affordability Index Very Affordable

2.5x home value to income ratio

Median gross rent $716/mo 19.6% of median household income annually

People & Demographics

Age Distribution

Under 18

22.0%

18-34

19.8%

35-54

23.3%

55-74

26.3%

75+

8.5%

Race & Ethnicity

Diversity Index

Moderate Diversity

Moderate diversity with one or two groups making up the majority.

State average: 53 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Marengo County

City	Population	Median Income	Poverty	Home Value
Demopolis	6,908	$34,802	25.9%	$183,600
Linden	1,961	$38,667	23.1%	$92,400
Thomaston	308	$58,125	21.4%	$92,700
Sweet Water	216	$52,411	3.7%	$161,600
Faunsdale	140	$99,583	0.0%	N/A
Providence	112	$50,000	17.9%	$165,900
Myrtlewood	78	$95,469	0.0%	$68,500
Putnam	75	$39,141	34.7%	$89,000
Dayton	46	N/A	6.5%	N/A
Nanafalia	16	N/A	0.0%	N/A

Explore Alabama Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Marengo County is located in Alabama with a total population of 18,851. It is the 47th most populous county out of 67 in Alabama. The county encompasses 10 Census-designated places.

Age Demographics

The median age in Marengo County is 41.4 years. This is 5% higher than the state median of 39.3 years.

Economy, Income & Housing

The median household income in Marengo County is $43,825. This is 32% lower than the state median of $63,999. It is also 46% lower than the national median of $80,734. The poverty rate stands at 21.9%. This is 40% higher than the state poverty rate of 15.6%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 4.1%. This is 13% lower than the state rate of 4.7%. The median home value is $107,400. Housing costs are 49% lower than the state median of $209,900. With a home-value-to-income ratio of just 2.5x, Marengo County is one of the most affordable housing markets in the area. 70.3% of occupied housing units are owner-occupied.

Race & Ethnicity

The largest racial or ethnic group in Marengo County is Black or African American, making up 50.8% of the population. White (non-Hispanic) residents account for 44.3%. The Black or African American population is significantly higher than the state average (50.8% vs 25.6%). The Hispanic or Latino population (2.7%) is well below the state average of 5.6%. The Asian population (0.3%) is well below the state average of 1.4%.

Education

19.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 31% lower than the state rate of 28.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 85.8%.

Data Sources & Methodology

All figures for Marengo County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Alabama and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Marengo County, Alabama?

Marengo County has a population of 18,851, making it the 47th most populous county in Alabama.

What is the median income in Marengo County?

The median household income in Marengo County is $43,825 with a poverty rate of 21.9%.

How many cities are in Marengo County, Alabama?

Marengo County contains 10 Census-designated places.