St. John the Baptist County Demographics

A map of St. John the Baptist County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Black	23,150	24,076	56.8%	56.7%
White	12,036	13,348	29.5%	31.4%
Hispanic	3,646	3,291	8.9%	7.7%
Multiracial	1,353	1,196	3.3%	2.8%
Asian	362	314	0.9%	0.7%
Native American/Other	196	252	0.5%	0.6%

St. John the Baptist County, Louisiana has an estimated population of 40,743, a decrease from the 42,477 recorded in the 2020 Census. The population is 56.8% Black, 29.5% White, 8.9% Hispanic, 3.3% Multiracial, 0.9% Asian, and 0.5% Native American/Other. This demographic dot map shows the population of St. John the Baptist County, with one dot drawn for each person counted by the Census, color-coded by race.

St. John the Baptist has become slightly more racially diverse since the 2020 Census. It is slightly less diverse than Louisiana overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In St. John the Baptist County, that probability was 57.3% in 2020 and 58.1% in the most recent ACS estimates.

St. John the Baptist County is ranked the 27th most populous county in Louisiana, out of 64 counties. St. John the Baptist County was ranked the 27th most populous county in the 2020 Census.

St. John the Baptist County's White Population

12,036 residents of St. John the Baptist County, or 29.5% of the population, identify as White. The share of White residents in St. John the Baptist County is significantly lower than in Louisiana overall, where 55.7% of the population is White. St. John the Baptist County ranks 63rd statewide in terms of White residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. John the Baptist County's White population has declined by an estimated 9.8%. White residents' share of St. John the Baptist County's population has decreased from 31.4% to 29.5%.

St. John the Baptist County is less White than neighboring St. Charles County (62.5% White), St. James County (49.3% White), Livingston County (80.2% White), Ascension County (63.5% White), and Tangipahoa County (60.5% White).

St. John the Baptist County's Black Population

23,150 residents of St. John the Baptist County, or 56.8% of the population, identify as Black. The share of Black residents in St. John the Baptist County is significantly higher than in Louisiana overall, where 30.5% of the population is Black. St. John the Baptist County ranks 3rd statewide in terms of Black residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. John the Baptist County's Black population has declined by an estimated 3.8%. Black residents' share of St. John the Baptist County's population has remained roughly unchanged at 56.8%.

St. John the Baptist County is more Black than neighboring St. Charles County (22.1% Black), St. James County (47.4% Black), Livingston County (8.9% Black), Ascension County (22.8% Black), and Tangipahoa County (29.2% Black).

St. John the Baptist County's Asian Population

362 residents of St. John the Baptist County, or 0.9% of the population, identify as Asian. The share of Asian residents in St. John the Baptist County is comparable to the share in Louisiana overall, where 1.7% of the population is Asian. St. John the Baptist County ranks 30th statewide in terms of Asian residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. John the Baptist County's Asian population has grown by an estimated 15.3%. Asian residents' share of St. John the Baptist County's population has remained roughly unchanged at 0.9%.

St. John the Baptist County is more Asian than neighboring St. Charles County (0.8% Asian), St. James County (0% Asian), Livingston County (0.7% Asian), and Tangipahoa County (0.8% Asian). St. John the Baptist County is less Asian than neighboring Ascension County (1% Asian).

St. John the Baptist County's Hispanic Population

3,646 residents of St. John the Baptist County, or 8.9% of the population, identify as Hispanic. The share of Hispanic residents in St. John the Baptist County is comparable to the share in Louisiana overall, where 7.2% of the population is Hispanic. St. John the Baptist County ranks 13th statewide in terms of Hispanic residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. John the Baptist County's Hispanic population has grown by an estimated 10.8%. Hispanic residents' share of St. John the Baptist County's population has increased from 7.7% to 8.9%.

St. John the Baptist County is more Hispanic than neighboring St. Charles County (8.2% Hispanic), St. James County (2% Hispanic), Livingston County (6.6% Hispanic), Ascension County (8.4% Hispanic), and Tangipahoa County (5.8% Hispanic).

St. John the Baptist County's Native American/Other Population

196 residents of St. John the Baptist County, or 0.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in St. John the Baptist County is comparable to the share in Louisiana overall, where 1% of the population is Native American/Other. St. John the Baptist County ranks 36th statewide in terms of Native American/Other residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. John the Baptist County's Native American/Other population has declined by an estimated 22.2%. Native American/Other residents' share of St. John the Baptist County's population has remained roughly unchanged at 0.5%.

St. John the Baptist County is more Native American/Other than neighboring St. James County (0.2% Native American/Other), and Tangipahoa County (0.4% Native American/Other). St. John the Baptist County is less Native American/Other than neighboring St. Charles County (1.9% Native American/Other), Livingston County (0.6% Native American/Other), and Ascension County (0.6% Native American/Other).

St. John the Baptist County's Multiracial Population

1,353 residents of St. John the Baptist County, or 3.3% of the population, identify as Multiracial. The share of Multiracial residents in St. John the Baptist County is comparable to the share in Louisiana overall, where 3.8% of the population is Multiracial. St. John the Baptist County ranks 41st statewide in terms of Multiracial residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. John the Baptist County's Multiracial population has grown by an estimated 13.1%. Multiracial residents' share of St. John the Baptist County's population has increased from 2.8% to 3.3%.

St. John the Baptist County is more Multiracial than neighboring St. James County (1.1% Multiracial), and Livingston County (3% Multiracial). St. John the Baptist County is less Multiracial than neighboring St. Charles County (4.4% Multiracial), and Ascension County (3.6% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.