St. Martin Parish, LA Demographics
St. Martin Parish, LA is the 21st most populous of 64 counties in Louisiana, with 51,758 residents across 737 square miles. That is about 70 people per square mile.
At the 2020 census
| Population | 51,758 |
|---|---|
| Land area | 737 sq mi |
| Density | 70 / sq mi |
Data: 2020 Census · American Community Survey 2024
How St. Martin 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: St. Martin Parish, LA
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around St. Martin Parish, LA — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in St. Martin Parish, LA
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 202.01 | 5,816 | 32.2 | 181 |
| Census Tract 203.03 | 5,271 | 16.2 | 325 |
| Census Tract 204.01 | 5,016 | 21.9 | 229 |
| Census Tract 203.01 | 4,657 | 17.4 | 267 |
| Census Tract 205.02 | 3,684 | 4.8 | 766 |
| Census Tract 201.01 | 2,922 | 112.9 | 26 |
| Census Tract 206.02 | 2,917 | 7.7 | 379 |
| Census Tract 205.04 | 2,855 | 25.3 | 113 |
| Census Tract 206.01 | 2,854 | 26.7 | 107 |
| Census Tract 203.04 | 2,743 | 10.9 | 252 |
| Census Tract 208 | 2,711 | 38.6 | 70 |
| Census Tract 205.03 | 2,407 | 5.1 | 469 |
| Census Tract 201.02 | 1,926 | 200.1 | 10 |
| Census Tract 209 | 1,667 | 6.8 | 245 |
| Census Tract 204.02 | 1,529 | 16.1 | 95 |
| Census Tract 202.02 | 1,424 | 17.8 | 80 |
| Census Tract 210 | 1,368 | 176.9 | 8 |
Related places
Other counties nearby
Nearest counties
Metro areas containing St. Martin Parish
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.