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Assumption Parish, LA Demographics

Assumption Parish, LA is the 43rd most populous of 64 counties in Louisiana, with 21,039 residents across 344 square miles. That is about 61 people per square mile.

At the 2020 census

Population 21,039
Land area 344 sq mi
Density 61 / sq mi

Data: 2020 Census · American Community Survey 2024

How Assumption Parish 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: Assumption Parish, LA

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

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

Census tracts in Assumption Parish, LA

Name Population Sq mi Per sq mi
Census Tract 506 3,976 56.7 70
Census Tract 503 3,419 59.2 58
Census Tract 501 3,245 54.8 59
Census Tract 504 2,895 52.7 55
Census Tract 502.01 2,822 20.7 136
Census Tract 505 2,523 78.1 32
Census Tract 502.02 2,159 21.7 99

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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 →