Allen County Demographics

A map of Allen County's Population by Race

Allen County, Kentucky has an estimated population of 21,293, an increase from the 20,588 recorded in the 2020 Census. The population is 92.7% White, 3.5% Multiracial, 2.9% Hispanic, 0.5% Native American/Other, 0.4% Black, and 0.0% Asian. 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 slightly less racially diverse since the 2020 Census. It is considerably less diverse than Kentucky 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 14.8% in 2020 and 13.9% in the most recent ACS estimates.

Allen County is ranked the 53rd most populous county in Kentucky, out of 120 counties. Allen County was ranked the 54th most populous county in the 2020 Census.

Allen County's White Population

19,733 residents of Allen County, or 92.7% of the population, identify as White. The share of White residents in Allen County is considerably higher than in Kentucky overall, where 81.5% of the population is White. Allen County ranks 50th statewide in terms of White residents as a share of the population, out of 120 counties.

Since the 2020 Census, Allen County's White population has grown by an estimated 3.9%. White residents' share of Allen County's population has increased from 92.2% to 92.7%.

Allen County is more White than neighboring Macon County (88.6% White), Barren County (87.4% White), Warren County (73.8% White), Trousdale County (79.1% White), and Sumner County (78.6% White).

Allen County's Black Population

84 residents of Allen County, or 0.4% of the population, identify as Black. The share of Black residents in Allen County is lower than in Kentucky overall, where 7.6% of the population is Black. Allen County ranks 79th statewide in terms of Black residents as a share of the population, out of 120 counties.

Since the 2020 Census, Allen County's Black population has declined by an estimated 58.8%. Black residents' share of Allen County's population has decreased from 1.0% to 0.4%.

Allen County is less Black than neighboring Macon County (0.6% Black), Barren County (3.8% Black), Warren County (9.1% Black), Trousdale County (11% Black), and Sumner County (8.4% Black).

Allen County's Asian Population

3 residents of Allen County, or 0.0% of the population, identify as Asian. The share of Asian residents in Allen County is comparable to the share in Kentucky overall, where 1.6% of the population is Asian. Allen County ranks 77th statewide in terms of Asian residents as a share of the population, out of 120 counties.

Since the 2020 Census, Allen County's Asian population has declined by an estimated 93.8%. Asian residents' share of Allen County's population has remained roughly unchanged at 0.0%.

Allen County is less Asian than neighboring Macon County (0.2% Asian), Barren County (0.9% Asian), Warren County (5% Asian), Trousdale County (0.1% Asian), and Sumner County (1.6% Asian).

Allen County's Hispanic Population

620 residents of Allen County, or 2.9% of the population, identify as Hispanic. The share of Hispanic residents in Allen County is slightly lower than in Kentucky overall, where 5% of the population is Hispanic. Allen County ranks 47th statewide in terms of Hispanic residents as a share of the population, out of 120 counties.

Since the 2020 Census, Allen County's Hispanic population has grown by an estimated 8.0%. Hispanic residents' share of Allen County's population has remained roughly unchanged at 2.9%.

Allen County is less Hispanic than neighboring Macon County (7% Hispanic), Barren County (4.4% Hispanic), Warren County (7.1% Hispanic), Trousdale County (4.1% Hispanic), and Sumner County (7.2% Hispanic).

Allen County's Native American/Other Population

111 residents of Allen County, or 0.5% 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 Kentucky overall, where 0.4% of the population is Native American/Other. Allen County ranks 63rd statewide in terms of Native American/Other residents as a share of the population, out of 120 counties.

Since the 2020 Census, Allen County's Native American/Other population has grown by an estimated 29.1%. Native American/Other residents' share of Allen County's population has remained roughly unchanged at 0.5%.

Allen County is more Native American/Other than neighboring Macon County (0% Native American/Other). Allen County is less Native American/Other than neighboring Barren County (0.6% Native American/Other), Warren County (0.8% Native American/Other), Trousdale County (1.3% Native American/Other), and Sumner County (0.7% Native American/Other).

Allen County's Multiracial Population

742 residents of Allen County, or 3.5% of the population, identify as Multiracial. The share of Multiracial residents in Allen County is comparable to the share in Kentucky overall, where 3.9% of the population is Multiracial. Allen County ranks 59th statewide in terms of Multiracial residents as a share of the population, out of 120 counties.

Since the 2020 Census, Allen County's Multiracial population has grown by an estimated 7.7%. Multiracial residents' share of Allen County's population has remained roughly unchanged at 3.5%.

Allen County is more Multiracial than neighboring Barren County (2.9% Multiracial). Allen County is less Multiracial than neighboring Macon County (3.6% Multiracial), Warren County (4.2% Multiracial), and Trousdale 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.