St. Joseph County Demographics

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

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	188,188	188,556	68.9%	69.1%
Black	33,512	35,420	12.3%	13.0%
Hispanic	28,786	26,576	10.5%	9.7%
Multiracial	13,476	13,492	4.9%	4.9%
Asian	7,429	6,586	2.7%	2.4%
Native American/Other	1,649	2,282	0.6%	0.8%

St. Joseph County, Indiana has an estimated population of 273,040, a less than 1% change from the 272,912 recorded in the 2020 Census. The population is 68.9% White, 12.3% Black, 10.5% Hispanic, 4.9% Multiracial, 2.7% Asian, and 0.6% Native American/Other. This demographic dot map shows the population of St. Joseph County, with one dot drawn for each person counted by the Census, color-coded by race.

St. Joseph is about as racially diverse as it was in the 2020 Census. It is considerably more diverse than Indiana overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In St. Joseph County, that probability was 49.3% in 2020 and 49.6% in the most recent ACS estimates.

St. Joseph County is ranked the 5th most populous county in Indiana, out of 92 counties. St. Joseph County was ranked the 5th most populous county in the 2020 Census.

St. Joseph County's White Population

188,188 residents of St. Joseph County, or 68.9% of the population, identify as White. The share of White residents in St. Joseph County is lower than in Indiana overall, where 75.4% of the population is White. St. Joseph County ranks 90th statewide in terms of White residents as a share of the population, out of 92 counties.

Since the 2020 Census, St. Joseph County's White population has remained roughly the same. White residents' share of St. Joseph County's population has remained roughly unchanged at 68.9%.

St. Joseph County is less White than neighboring Marshall County (84.9% White), Cass County (84% White), Elkhart County (69.9% White), LaPorte County (76% White), and Starke County (91% White).

St. Joseph County's Black Population

33,512 residents of St. Joseph County, or 12.3% of the population, identify as Black. The share of Black residents in St. Joseph County is slightly higher than in Indiana overall, where 9.1% of the population is Black. St. Joseph County ranks 3rd statewide in terms of Black residents as a share of the population, out of 92 counties.

Since the 2020 Census, St. Joseph County's Black population has declined by an estimated 5.4%. Black residents' share of St. Joseph County's population has decreased from 13.0% to 12.3%.

St. Joseph County is more Black than neighboring Marshall County (0.6% Black), Cass County (4% Black), Elkhart County (4.7% Black), LaPorte County (10.3% Black), and Starke County (0.5% Black).

St. Joseph County's Asian Population

7,429 residents of St. Joseph County, or 2.7% of the population, identify as Asian. The share of Asian residents in St. Joseph County is comparable to the share in Indiana overall, where 2.6% of the population is Asian. St. Joseph County ranks 11th statewide in terms of Asian residents as a share of the population, out of 92 counties.

Since the 2020 Census, St. Joseph County's Asian population has grown by an estimated 12.8%. Asian residents' share of St. Joseph County's population has remained roughly unchanged at 2.7%.

St. Joseph County is more Asian than neighboring Marshall County (0.6% Asian), Cass County (0.8% Asian), Elkhart County (1% Asian), LaPorte County (0.6% Asian), and Starke County (0.3% Asian).

St. Joseph County's Hispanic Population

28,786 residents of St. Joseph County, or 10.5% of the population, identify as Hispanic. The share of Hispanic residents in St. Joseph County is comparable to the share in Indiana overall, where 8.6% of the population is Hispanic. St. Joseph County ranks 12th statewide in terms of Hispanic residents as a share of the population, out of 92 counties.

Since the 2020 Census, St. Joseph County's Hispanic population has grown by an estimated 8.3%. Hispanic residents' share of St. Joseph County's population has increased from 9.7% to 10.5%.

St. Joseph County is more Hispanic than neighboring Cass County (4.5% Hispanic), LaPorte County (7.6% Hispanic), and Starke County (4.3% Hispanic). St. Joseph County is less Hispanic than neighboring Marshall County (11.9% Hispanic), and Elkhart County (20.1% Hispanic).

St. Joseph County's Native American/Other Population

1,649 residents of St. Joseph County, or 0.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in St. Joseph County is comparable to the share in Indiana overall, where 0.5% of the population is Native American/Other. St. Joseph County ranks 4th statewide in terms of Native American/Other residents as a share of the population, out of 92 counties.

Since the 2020 Census, St. Joseph County's Native American/Other population has declined by an estimated 27.7%. Native American/Other residents' share of St. Joseph County's population has remained roughly unchanged at 0.6%.

St. Joseph County is more Native American/Other than neighboring Marshall County (0.2% Native American/Other), and Starke County (0.2% Native American/Other). St. Joseph County is less Native American/Other than neighboring Cass County (1.5% Native American/Other), and Elkhart County (0.8% Native American/Other).

St. Joseph County's Multiracial Population

13,476 residents of St. Joseph County, or 4.9% of the population, identify as Multiracial. The share of Multiracial residents in St. Joseph County is comparable to the share in Indiana overall, where 3.8% of the population is Multiracial. St. Joseph County ranks 4th statewide in terms of Multiracial residents as a share of the population, out of 92 counties.

Since the 2020 Census, St. Joseph County's Multiracial population has remained roughly the same. Multiracial residents' share of St. Joseph County's population has remained roughly unchanged at 4.9%.

St. Joseph County is more Multiracial than neighboring Marshall County (1.8% Multiracial), Elkhart County (3.6% Multiracial), and Starke County (3.6% Multiracial). St. Joseph County is less Multiracial than neighboring Cass County (5.2% 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.