St. James County Demographics

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

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	9,624	9,917	49.3%	49.1%
Black	9,263	9,486	47.4%	47.0%
Hispanic	382	343	2.0%	1.7%
Multiracial	215	362	1.1%	1.8%
Native American/Other	36	56	0.2%	0.3%
Asian	8	28	0.0%	0.1%

St. James County, Louisiana has an estimated population of 19,528, a decrease from the 20,192 recorded in the 2020 Census. The population is 49.3% White, 47.4% Black, 2.0% Hispanic, 1.1% Multiracial, 0.2% Native American/Other, and 0.0% Asian. This demographic dot map shows the population of St. James County, with one dot drawn for each person counted by the Census, color-coded by race.

St. James has become slightly less racially diverse since the 2020 Census. It is considerably 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. James County, that probability was 53.8% in 2020 and 53.2% in the most recent ACS estimates.

St. James County is ranked the 46th most populous county in Louisiana, out of 64 counties. St. James County was ranked the 45th most populous county in the 2020 Census.

St. James County's White Population

9,624 residents of St. James County, or 49.3% of the population, identify as White. The share of White residents in St. James County is lower than in Louisiana overall, where 55.7% of the population is White. St. James County ranks 53rd statewide in terms of White residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. James County's White population has declined by an estimated 3.0%. White residents' share of St. James County's population has remained roughly unchanged at 49.3%.

St. James County is more White than neighboring St. John the Baptist County (29.5% White). St. James County is less White than neighboring Ascension County (63.5% White), Assumption County (63.9% White), Livingston County (80.2% White), and St. Charles County (62.5% White).

St. James County's Black Population

9,263 residents of St. James County, or 47.4% of the population, identify as Black. The share of Black residents in St. James County is significantly higher than in Louisiana overall, where 30.5% of the population is Black. St. James County ranks 8th statewide in terms of Black residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. James County's Black population has declined by an estimated 2.4%. Black residents' share of St. James County's population has remained roughly unchanged at 47.4%.

St. James County is more Black than neighboring Ascension County (22.8% Black), Assumption County (27.7% Black), Livingston County (8.9% Black), and St. Charles County (22.1% Black). St. James County is less Black than neighboring St. John the Baptist County (56.8% Black).

St. James County's Asian Population

8 residents of St. James County, or 0.0% of the population, identify as Asian. The share of Asian residents in St. James County is comparable to the share in Louisiana overall, where 1.7% of the population is Asian. St. James County ranks 61st statewide in terms of Asian residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. James County's Asian population has declined by an estimated 71.4%. Asian residents' share of St. James County's population has remained roughly unchanged at 0.0%.

St. James County is less Asian than neighboring Ascension County (1% Asian), Assumption County (0.9% Asian), St. John the Baptist County (0.9% Asian), Livingston County (0.7% Asian), and St. Charles County (0.8% Asian).

St. James County's Hispanic Population

382 residents of St. James County, or 2.0% of the population, identify as Hispanic. The share of Hispanic residents in St. James County is lower than in Louisiana overall, where 7.2% of the population is Hispanic. St. James County ranks 59th statewide in terms of Hispanic residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. James County's Hispanic population has grown by an estimated 11.4%. Hispanic residents' share of St. James County's population has remained roughly unchanged at 2.0%.

St. James County is less Hispanic than neighboring Ascension County (8.4% Hispanic), Assumption County (4.3% Hispanic), St. John the Baptist County (8.9% Hispanic), Livingston County (6.6% Hispanic), and St. Charles County (8.2% Hispanic).

St. James County's Native American/Other Population

36 residents of St. James County, or 0.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in St. James County is comparable to the share in Louisiana overall, where 1% of the population is Native American/Other. St. James County ranks 62nd statewide in terms of Native American/Other residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. James County's Native American/Other population has declined by an estimated 35.7%. Native American/Other residents' share of St. James County's population has remained roughly unchanged at 0.2%.

St. James County is less Native American/Other than neighboring Ascension County (0.6% Native American/Other), Assumption County (0.8% Native American/Other), St. John the Baptist County (0.5% Native American/Other), Livingston County (0.6% Native American/Other), and St. Charles County (1.9% Native American/Other).

St. James County's Multiracial Population

215 residents of St. James County, or 1.1% of the population, identify as Multiracial. The share of Multiracial residents in St. James County is slightly lower than in Louisiana overall, where 3.8% of the population is Multiracial. St. James County ranks 63rd statewide in terms of Multiracial residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. James County's Multiracial population has declined by an estimated 40.6%. Multiracial residents' share of St. James County's population has decreased from 1.8% to 1.1%.

St. James County is less Multiracial than neighboring Ascension County (3.6% Multiracial), Assumption County (2.4% Multiracial), St. John the Baptist County (3.3% Multiracial), Livingston County (3% Multiracial), and St. Charles County (4.4% 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.