St. Charles County Demographics

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

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	32,125	32,708	62.5%	62.2%
Black	11,356	13,024	22.1%	24.8%
Hispanic	4,229	4,141	8.2%	7.9%
Multiracial	2,257	1,714	4.4%	3.3%
Native American/Other	1,000	407	1.9%	0.8%
Asian	429	555	0.8%	1.1%

St. Charles County, Louisiana has an estimated population of 51,396, a slight decrease from the 52,549 recorded in the 2020 Census. The population is 62.5% White, 22.1% Black, 8.2% Hispanic, 4.4% Multiracial, 1.9% Native American/Other, and 0.8% Asian. This demographic dot map shows the population of St. Charles County, with one dot drawn for each person counted by the Census, color-coded by race.

St. Charles has become slightly more racially diverse since the 2020 Census. It is 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. Charles County, that probability was 54.4% in 2020 and 55.1% in the most recent ACS estimates.

St. Charles County is ranked the 20th most populous county in Louisiana, out of 64 counties. St. Charles County was ranked the 20th most populous county in the 2020 Census.

St. Charles County's White Population

32,125 residents of St. Charles County, or 62.5% of the population, identify as White. The share of White residents in St. Charles County is higher than in Louisiana overall, where 55.7% of the population is White. St. Charles County ranks 30th statewide in terms of White residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. Charles County's White population has declined by an estimated 1.8%. White residents' share of St. Charles County's population has remained roughly unchanged at 62.5%.

St. Charles County is more White than neighboring St. John the Baptist County (29.5% White), Jefferson County (47.2% White), St. James County (49.3% White), and Orleans County (30.1% White). St. Charles County is less White than neighboring Lafourche County (74.2% White).

St. Charles County's Black Population

11,356 residents of St. Charles County, or 22.1% of the population, identify as Black. The share of Black residents in St. Charles County is lower than in Louisiana overall, where 30.5% of the population is Black. St. Charles County ranks 43rd statewide in terms of Black residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. Charles County's Black population has declined by an estimated 12.8%. Black residents' share of St. Charles County's population has decreased from 24.8% to 22.1%.

St. Charles County is more Black than neighboring Lafourche County (12.8% Black). St. Charles County is less Black than neighboring St. John the Baptist County (56.8% Black), Jefferson County (25.1% Black), St. James County (47.4% Black), and Orleans County (53.9% Black).

St. Charles County's Asian Population

429 residents of St. Charles County, or 0.8% of the population, identify as Asian. The share of Asian residents in St. Charles County is comparable to the share in Louisiana overall, where 1.7% of the population is Asian. St. Charles County ranks 22nd statewide in terms of Asian residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. Charles County's Asian population has declined by an estimated 22.7%. Asian residents' share of St. Charles County's population has remained roughly unchanged at 0.8%.

St. Charles County is more Asian than neighboring Lafourche County (0.6% Asian), and St. James County (0% Asian). St. Charles County is less Asian than neighboring St. John the Baptist County (0.9% Asian), Jefferson County (4.2% Asian), and Orleans County (2.8% Asian).

St. Charles County's Hispanic Population

4,229 residents of St. Charles County, or 8.2% of the population, identify as Hispanic. The share of Hispanic residents in St. Charles County is comparable to the share in Louisiana overall, where 7.2% of the population is Hispanic. St. Charles County ranks 11th statewide in terms of Hispanic residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. Charles County's Hispanic population has grown by an estimated 2.1%. Hispanic residents' share of St. Charles County's population has remained roughly unchanged at 8.2%.

St. Charles County is more Hispanic than neighboring Lafourche County (5.9% Hispanic), and St. James County (2% Hispanic). St. Charles County is less Hispanic than neighboring St. John the Baptist County (8.9% Hispanic), and Jefferson County (18.9% Hispanic).

St. Charles County's Native American/Other Population

1,000 residents of St. Charles County, or 1.9% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in St. Charles County is comparable to the share in Louisiana overall, where 1% of the population is Native American/Other. St. Charles County ranks 25th statewide in terms of Native American/Other residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. Charles County's Native American/Other population has grown by an estimated 145.7%. Native American/Other residents' share of St. Charles County's population has increased from 0.8% to 1.9%.

St. Charles County is more Native American/Other than neighboring St. John the Baptist County (0.5% Native American/Other), Jefferson County (0.9% Native American/Other), St. James County (0.2% Native American/Other), and Orleans County (1.1% Native American/Other). St. Charles County is less Native American/Other than neighboring Lafourche County (2.6% Native American/Other).

St. Charles County's Multiracial Population

2,257 residents of St. Charles County, or 4.4% of the population, identify as Multiracial. The share of Multiracial residents in St. Charles County is comparable to the share in Louisiana overall, where 3.8% of the population is Multiracial. St. Charles County ranks 28th statewide in terms of Multiracial residents as a share of the population, out of 64 counties.

Since the 2020 Census, St. Charles County's Multiracial population has grown by an estimated 31.7%. Multiracial residents' share of St. Charles County's population has increased from 3.3% to 4.4%.

St. Charles County is more Multiracial than neighboring St. John the Baptist County (3.3% Multiracial), Jefferson County (3.7% Multiracial), Lafourche County (4% Multiracial), St. James County (1.1% Multiracial), and Orleans County (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.