Allen County Demographics

A map of Allen County's Population by Race

Allen County, Indiana has an estimated population of 392,378, a slight increase from the 385,410 recorded in the 2020 Census. The population is 69.8% White, 10.5% Black, 9.0% Hispanic, 5.3% Asian, 4.8% Multiracial, and 0.6% Native American/Other. This demographic dot map shows the population of Allen County, with one dot drawn for each person counted by the Census, color-coded by race.

Allen 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 Allen County, that probability was 48.4% in 2020 and 48.9% in the most recent ACS estimates.

Allen County is ranked the 3rd most populous county in Indiana, out of 92 counties. Allen County was ranked the 3rd most populous county in the 2020 Census.

Allen County's White Population

273,822 residents of Allen County, or 69.8% of the population, identify as White. The share of White residents in Allen County is lower than in Indiana overall, where 75.4% of the population is White. Allen County ranks 88th statewide in terms of White residents as a share of the population, out of 92 counties.

Since the 2020 Census, Allen County's White population has grown by an estimated 1.4%. White residents' share of Allen County's population has remained roughly unchanged at 69.8%.

Allen County is less White than neighboring DeKalb County (93.6% White), Adams County (92.7% White), Wells County (92.2% White), Whitley County (91.9% White), and Noble County (85.1% White).

Allen County's Black Population

41,126 residents of Allen County, or 10.5% of the population, identify as Black. The share of Black residents in Allen County is comparable to the share in Indiana overall, where 9.1% of the population is Black. Allen County ranks 4th statewide in terms of Black residents as a share of the population, out of 92 counties.

Since the 2020 Census, Allen County's Black population has declined by an estimated 5.7%. Black residents' share of Allen County's population has decreased from 11.3% to 10.5%.

Allen County is more Black than neighboring DeKalb County (0.1% Black), Adams County (0.3% Black), Wells County (1% Black), Whitley County (0.2% Black), and Noble County (0.3% Black).

Allen County's Asian Population

20,772 residents of Allen County, or 5.3% of the population, identify as Asian. The share of Asian residents in Allen County is slightly higher than in Indiana overall, where 2.6% of the population is Asian. Allen County ranks 5th statewide in terms of Asian residents as a share of the population, out of 92 counties.

Since the 2020 Census, Allen County's Asian population has grown by an estimated 14.2%. Asian residents' share of Allen County's population has increased from 4.7% to 5.3%.

Allen County is more Asian than neighboring DeKalb County (0.6% Asian), Adams County (0.4% Asian), Wells County (0.2% Asian), Whitley County (0.3% Asian), and Noble County (0.6% Asian).

Allen County's Hispanic Population

35,389 residents of Allen County, or 9.0% of the population, identify as Hispanic. The share of Hispanic residents in Allen County is comparable to the share in Indiana overall, where 8.6% of the population is Hispanic. Allen County ranks 16th statewide in terms of Hispanic residents as a share of the population, out of 92 counties.

Since the 2020 Census, Allen County's Hispanic population has grown by an estimated 7.5%. Hispanic residents' share of Allen County's population has increased from 8.5% to 9.0%.

Allen County is more Hispanic than neighboring DeKalb County (3.1% Hispanic), Adams County (4.8% Hispanic), Wells County (4% Hispanic), and Whitley County (2.8% Hispanic). Allen County is less Hispanic than neighboring Noble County (11.3% Hispanic).

Allen County's Native American/Other Population

2,292 residents of Allen 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 Allen County is comparable to the share in Indiana overall, where 0.5% of the population is Native American/Other. Allen County ranks 5th statewide in terms of Native American/Other residents as a share of the population, out of 92 counties.

Since the 2020 Census, Allen County's Native American/Other population has declined by an estimated 22.6%. Native American/Other residents' share of Allen County's population has remained roughly unchanged at 0.6%.

Allen County is more Native American/Other than neighboring DeKalb County (0.2% Native American/Other), Adams County (0.1% Native American/Other), Wells County (0.2% Native American/Other), and Noble County (0.5% Native American/Other). Allen County is less Native American/Other than neighboring Whitley County (0.8% Native American/Other).

Allen County's Multiracial Population

18,977 residents of Allen County, or 4.8% of the population, identify as Multiracial. The share of Multiracial residents in Allen County is comparable to the share in Indiana overall, where 3.8% of the population is Multiracial. Allen County ranks 11th statewide in terms of Multiracial residents as a share of the population, out of 92 counties.

Since the 2020 Census, Allen County's Multiracial population has grown by an estimated 8.1%. Multiracial residents' share of Allen County's population has remained roughly unchanged at 4.8%.

Allen County is more Multiracial than neighboring DeKalb County (2.5% Multiracial), Adams County (1.8% Multiracial), Wells County (2.4% Multiracial), Whitley County (3.9% Multiracial), and Noble County (2.2% 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.