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Marengo County, AL Demographics

Marengo County, AL is the 48th most populous of 67 counties in Alabama, with 19,323 residents across 977 square miles. That is about 20 people per square mile.

At the 2020 census

Population 19,323
Land area 977 sq mi
Density 20 / sq mi

Data: 2020 Census · American Community Survey 2024

How Marengo County compares to the US

We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.

Central Location: Marengo County, AL

Measured from the county's main population center using 2020 census blocks.

We're computing the drive-time and radius areas around Marengo County, AL — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.

Census tracts in Marengo County, AL

Name Population Sq mi Per sq mi
Census Tract 9734 4,162 132.3 31
Census Tract 9729.02 3,344 36.2 92
Census Tract 9730.02 2,829 201.2 14
Census Tract 9732 2,396 110.6 22
Census Tract 9733 1,918 189.2 10
Census Tract 9731 1,717 241.2 7
Census Tract 9729.01 1,619 3.1 522
Census Tract 9730.01 1,338 63.2 21

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About this page

This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.

Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.

Read how BlockAtlas computes population within an area →