St Tammany, Louisiana Census 2020 Population By Race and Ethnicity

Updated on February 22, 2026.

According to the data from the US 2020 decennial Census, in April 2020, the 264.57K population of St Tammany, LA residents comprised of 20.84K residents who identified as Hispanic or Latino (7.88%), and 243.73K residents who identified as Non-Hispanic (92.12%).

Race: The White Alone population was the largest racial group in St Tammany, LA, with a population of 196.64K (74.33%). The Black or African American Alone population was the second largest racial group in St Tammany, LA, with a population of 34.36K (12.99%). The Two Or More Races population was the third largest racial group in St Tammany, LA, with a population of 22.37K (8.46%). The smallest racial group in St Tammany, LA was Native Hawaiian And Pacific Islander Alone with a population of 105 (0.04%).

Ethnicity: The Non-Hispanic - White Alone population was the largest ethnic group in St Tammany, LA, with a population of 192.14K (72.63%). The Non-Hispanic - Black Alone population was the second largest ethnic group in St Tammany, LA, with a population of 33.97K (12.84%). The Non-Hispanic - Two or More Races population was the third largest ethnic group in St Tammany, LA, with a population of 11.47K (4.33%). The smallest ethnic group in St Tammany, LA was Hispanic - Native Hawaiian & Pac. Islander with a population of 0 (0.00%).

The charts and tables below shows the population and percentage of each racial group and ethnicity group in St Tammany, Louisiana from the 2020 decennial census.

You can see similar information for other Louisiana counties and also for the state of Louisiana.

St Tammany, LA Hispanics and Non Hispanics Population in Census 2020
Total Population:
St Tammany, LA Racial Groups in Census 2020
Total Population:
St Tammany, LA Ethnicity Groups in Census 2020
Total Population:
St Tammany, LA Population of Racial Groups in Census 2020
0 of 0
Race Population % of County Population
Black or African American Alone 34356 12.99
White Alone 196641 74.33
American Indian and Alaska Native Alone 1184 0.45
Asian Alone 3898 1.47
Native Hawaiian And Pacific Islander Alone 105 0.04
Some Other Race Alone 6012 2.27
Two Or More Races 22374 8.46
St Tammany, LA Population of Ethnicity Groups in Census 2020
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Ethnicity Population % of County Population
Non-Hispanic - White Alone 192144 72.63
Non-Hispanic - Black Alone 33969 12.84
Non-Hispanic - Two or More Races 11466 4.33
Hispanic - Two or More Races 10908 4.12
Hispanic - Some Other Race Alone 4660 1.76
Hispanic - White Alone 4497 1.70
Non-Hispanic - Asian Alone 3814 1.44
Non-Hispanic - Some Other Race Alone 1352 0.51
Non-Hispanic - American Indian & Alaska Native 876 0.33
Hispanic - Black Alone 387 0.15
Hispanic - American Indian & Alaska Native 308 0.12
Non-Hispanic - Native Hawaiian & Pac. Islander 105 0.04
Hispanic - Asian Alone 84 0.03
Hispanic - Native Hawaiian & Pac. Islander 0 0.00