Allen County Demographics

A map of Allen County's Population by Race

Allen County, Ohio has an estimated population of 101,348, a less than 1% change from the 102,206 recorded in the 2020 Census. The population is 79.0% White, 9.6% Black, 6.2% Multiracial, 3.6% Hispanic, 0.9% Asian, 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 has become less racially diverse since the 2020 Census. It is less diverse than Ohio 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 37.4% in 2020 and 36.1% in the most recent ACS estimates.

Allen County is ranked the 26th most populous county in Ohio, out of 88 counties. Allen County was ranked the 26th most populous county in the 2020 Census.

Allen County's White Population

80,069 residents of Allen County, or 79.0% of the population, identify as White. The share of White residents in Allen County is slightly higher than in Ohio overall, where 75.8% of the population is White. Allen County ranks 79th statewide in terms of White residents as a share of the population, out of 88 counties.

Since the 2020 Census, Allen County's White population has remained roughly the same. White residents' share of Allen County's population has increased from 78.0% to 79.0%.

Allen County is less White than neighboring Auglaize County (94.3% White), Putnam County (90.8% White), Shelby County (91.5% White), Hardin County (92.7% White), and Van Wert County (91.7% White).

Allen County's Black Population

9,703 residents of Allen County, or 9.6% of the population, identify as Black. The share of Black residents in Allen County is slightly lower than in Ohio overall, where 12% of the population is Black. Allen County ranks 8th statewide in terms of Black residents as a share of the population, out of 88 counties.

Since the 2020 Census, Allen County's Black population has declined by an estimated 22.2%. Black residents' share of Allen County's population has decreased from 12.2% to 9.6%.

Allen County is more Black than neighboring Auglaize County (1% Black), Putnam County (0.5% Black), Shelby County (2.2% Black), Hardin County (1.3% Black), and Van Wert County (0.5% Black).

Allen County's Asian Population

942 residents of Allen County, or 0.9% of the population, identify as Asian. The share of Asian residents in Allen County is comparable to the share in Ohio overall, where 2.5% of the population is Asian. Allen County ranks 26th statewide in terms of Asian residents as a share of the population, out of 88 counties.

Since the 2020 Census, Allen County's Asian population has grown by an estimated 12.8%. Asian residents' share of Allen County's population has remained roughly unchanged at 0.9%.

Allen County is more Asian than neighboring Auglaize County (0.3% Asian), Putnam County (0.2% Asian), Shelby County (0.6% Asian), Hardin County (0.7% Asian), and Van Wert County (0.3% Asian).

Allen County's Hispanic Population

3,682 residents of Allen County, or 3.6% of the population, identify as Hispanic. The share of Hispanic residents in Allen County is comparable to the share in Ohio overall, where 4.8% of the population is Hispanic. Allen County ranks 28th statewide in terms of Hispanic residents as a share of the population, out of 88 counties.

Since the 2020 Census, Allen County's Hispanic population has grown by an estimated 12.5%. Hispanic residents' share of Allen County's population has remained roughly unchanged at 3.6%.

Allen County is more Hispanic than neighboring Auglaize County (1.9% Hispanic), Shelby County (1.7% Hispanic), and Hardin County (2.4% Hispanic). Allen County is less Hispanic than neighboring Putnam County (6.7% Hispanic), and Van Wert County (4.2% Hispanic).

Allen County's Native American/Other Population

638 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 Ohio overall, where 0.5% of the population is Native American/Other. Allen County ranks 2nd statewide in terms of Native American/Other residents as a share of the population, out of 88 counties.

Since the 2020 Census, Allen County's Native American/Other population has declined by an estimated 21.8%. 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 Auglaize County (0.2% Native American/Other), Putnam County (0.5% Native American/Other), Shelby County (0.4% Native American/Other), Hardin County (0.4% Native American/Other), and Van Wert County (0.2% Native American/Other).

Allen County's Multiracial Population

6,314 residents of Allen County, or 6.2% of the population, identify as Multiracial. The share of Multiracial residents in Allen County is comparable to the share in Ohio overall, where 4.3% of the population is Multiracial. Allen County ranks 6th statewide in terms of Multiracial residents as a share of the population, out of 88 counties.

Since the 2020 Census, Allen County's Multiracial population has grown by an estimated 23.4%. Multiracial residents' share of Allen County's population has increased from 5.0% to 6.2%.

Allen County is more Multiracial than neighboring Auglaize County (2.4% Multiracial), Putnam County (1.2% Multiracial), Shelby County (3.5% Multiracial), Hardin County (2.5% Multiracial), and Van Wert County (3% 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.