Osage County Demographics

A map of Osage County's Population by Race

Osage County, Kansas has an estimated population of 15,744, a less than 1% change from the 15,766 recorded in the 2020 Census. The population is 92.1% White, 3.5% Multiracial, 3.4% Hispanic, 0.6% Native American/Other, 0.3% Black, and 0.1% Asian. This demographic dot map shows the population of Osage County, with one dot drawn for each person counted by the Census, color-coded by race.

Osage is about as racially diverse as it was in the 2020 Census. It is considerably less diverse than Kansas overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Osage County, that probability was 15.1% in 2020 and 15.0% in the most recent ACS estimates.

Osage County is ranked the 32nd most populous county in Kansas, out of 105 counties. Osage County was ranked the 33rd most populous county in the 2020 Census.

Osage County's White Population

14,497 residents of Osage County, or 92.1% of the population, identify as White. The share of White residents in Osage County is significantly higher than in Kansas overall, where 72.7% of the population is White. Osage County ranks 15th statewide in terms of White residents as a share of the population, out of 105 counties.

Since the 2020 Census, Osage County's White population has remained roughly the same. White residents' share of Osage County's population has remained roughly unchanged at 92.1%.

Osage County is more White than neighboring Shawnee County (71% White), Coffey County (91.3% White), Franklin County (88.9% White), Lyon County (68.3% White), and Douglas County (76% White).

Osage County's Black Population

44 residents of Osage County, or 0.3% of the population, identify as Black. The share of Black residents in Osage County is slightly lower than in Kansas overall, where 5.2% of the population is Black. Osage County ranks 88th statewide in terms of Black residents as a share of the population, out of 105 counties.

Since the 2020 Census, Osage County's Black population has grown by an estimated 33.3%. Black residents' share of Osage County's population has remained roughly unchanged at 0.3%.

Osage County is less Black than neighboring Shawnee County (6.6% Black), Coffey County (0.6% Black), Franklin County (1.1% Black), Lyon County (1.4% Black), and Douglas County (4.2% Black).

Osage County's Asian Population

23 residents of Osage County, or 0.1% of the population, identify as Asian. The share of Asian residents in Osage County is slightly lower than in Kansas overall, where 2.9% of the population is Asian. Osage County ranks 70th statewide in terms of Asian residents as a share of the population, out of 105 counties.

Since the 2020 Census, Osage County's Asian population has declined by an estimated 55.8%. Asian residents' share of Osage County's population has remained roughly unchanged at 0.1%.

Osage County is less Asian than neighboring Shawnee County (1.3% Asian), Coffey County (0.9% Asian), Franklin County (0.6% Asian), Lyon County (1.9% Asian), and Douglas County (4.3% Asian).

Osage County's Hispanic Population

529 residents of Osage County, or 3.4% of the population, identify as Hispanic. The share of Hispanic residents in Osage County is considerably lower than in Kansas overall, where 13.6% of the population is Hispanic. Osage County ranks 84th statewide in terms of Hispanic residents as a share of the population, out of 105 counties.

Since the 2020 Census, Osage County's Hispanic population has grown by an estimated 15.8%. Hispanic residents' share of Osage County's population has increased from 2.9% to 3.4%.

Osage County is less Hispanic than neighboring Shawnee County (13.8% Hispanic), Coffey County (3.9% Hispanic), Franklin County (4.8% Hispanic), Lyon County (24.2% Hispanic), and Douglas County (7.2% Hispanic).

Osage County's Native American/Other Population

96 residents of Osage 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 Osage County is comparable to the share in Kansas overall, where 0.9% of the population is Native American/Other. Osage County ranks 87th statewide in terms of Native American/Other residents as a share of the population, out of 105 counties.

Since the 2020 Census, Osage County's Native American/Other population has grown by an estimated 37.1%. Native American/Other residents' share of Osage County's population has remained roughly unchanged at 0.6%.

Osage County is more Native American/Other than neighboring Coffey County (0.3% Native American/Other), and Lyon County (0.4% Native American/Other). Osage County is less Native American/Other than neighboring Shawnee County (1% Native American/Other), Franklin County (0.8% Native American/Other), and Douglas County (1.5% Native American/Other).

Osage County's Multiracial Population

555 residents of Osage County, or 3.5% of the population, identify as Multiracial. The share of Multiracial residents in Osage County is comparable to the share in Kansas overall, where 4.8% of the population is Multiracial. Osage County ranks 44th statewide in terms of Multiracial residents as a share of the population, out of 105 counties.

Since the 2020 Census, Osage County's Multiracial population has declined by an estimated 14.5%. Multiracial residents' share of Osage County's population has decreased from 4.1% to 3.5%.

Osage County is more Multiracial than neighboring Coffey County (3% Multiracial). Osage County is less Multiracial than neighboring Shawnee County (6.3% Multiracial), Franklin County (3.7% Multiracial), Lyon County (3.9% Multiracial), and Douglas County (6.8% 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.