St. Tammany County Demographics

A map of St. Tammany County's Population by Race

St. Tammany County, Louisiana had a population of 264,570 in 2020. It was 72.6% White, 12.8% Black, 1.4% Asian, 7.9% Hispanic, 0.9% Native American/Other, and 4.3% Multiracial. This map presents the population of St. Tammany County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

St. Tammany County is the 4th most populous county of the 64 counties in Louisiana.

St. Tammany County's White Population

192,144 residents of St. Tammany County identify as White, or 72.6%. This makes the White share of the population of St. Tammany County larger than the White share of the population of Louisiana (55.8% White). Of the 64 counties in Louisiana, St. Tammany County is ranked #11 in terms of White residents as a share of the population.

St. Tammany County is more White than neighboring Orleans County (31.6% White), Washington County (65.1% White), and Tangipahoa County (59.9% White). St. Tammany County is less White than neighboring Hancock County (81.1% White), and Pearl River County (78.5% White).

St. Tammany County's Black Population

33,969 residents of St. Tammany County identify as Black, or 12.8%. This makes the Black share of the population of St. Tammany County less than the Black share of the population of Louisiana (31.2% Black). Of the 64 counties in Louisiana, St. Tammany County is ranked #60 in terms of Black residents as a share of the population.

St. Tammany County is more Black than neighboring Hancock County (8.5% Black), and Pearl River County (11.9% Black). St. Tammany County is less Black than neighboring Orleans County (53.6% Black), Washington County (28.1% Black), and Tangipahoa County (29.9% Black).

St. Tammany County's Asian Population

3,814 residents of St. Tammany County identify as Asian, or 1.4%. This makes the Asian share of the population of St. Tammany County roughly similar to the Asian share of the population of Louisiana (1.8% Asian). Of the 64 counties in Louisiana, St. Tammany County is ranked #13 in terms of Asian residents as a share of the population.

St. Tammany County is more Asian than neighboring Washington County (0.4% Asian), Hancock County (0.9% Asian), Tangipahoa County (0.7% Asian), and Pearl River County (0.5% Asian). St. Tammany County is less Asian than neighboring Orleans County (2.8% Asian).

St. Tammany County's Hispanic Population

20,844 residents of St. Tammany County identify as Hispanic, or 7.9%. This makes the Hispanic share of the population of St. Tammany County roughly similar to the Hispanic share of the population of Louisiana (6.9% Hispanic). Of the 64 counties in Louisiana, St. Tammany County is ranked #12 in terms of Hispanic residents as a share of the population.

St. Tammany County is more Hispanic than neighboring Washington County (3.1% Hispanic), Hancock County (4.2% Hispanic), Tangipahoa County (5.4% Hispanic), and Pearl River County (4.1% Hispanic). St. Tammany County is less Hispanic than neighboring Orleans County (8.1% Hispanic).

St. Tammany County's Native American/Other Population

2,333 residents of St. Tammany County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.9%. This makes the Native American/Other share of the population of St. Tammany County roughly similar to the Native American/Other share of the population of Louisiana (1% Native American/Other). Of the 64 counties in Louisiana, St. Tammany County is ranked #17 in terms of Native American/Other residents as a share of the population.

St. Tammany County is more Native American/Other than neighboring Orleans County (0.8% Native American/Other), Washington County (0.5% Native American/Other), Tangipahoa County (0.6% Native American/Other), and Pearl River County (0.7% Native American/Other).

St. Tammany County's Multiracial Population

11,466 residents of St. Tammany County identify as Multiracial, or 4.3%. This makes the Multiracial share of the population of St. Tammany County roughly similar to the Multiracial share of the population of Louisiana (3.4% Multiracial). Of the 64 counties in Louisiana, St. Tammany County is ranked #6 in terms of Multiracial residents as a share of the population.

St. Tammany County is more Multiracial than neighboring Orleans County (3.2% Multiracial), Washington County (2.9% Multiracial), and Tangipahoa County (3.4% Multiracial). St. Tammany County is less Multiracial than neighboring Hancock County (4.4% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.