Atchison County Demographics

A map of Atchison County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	4,804	4,983	92.6%	93.9%
Multiracial	204	181	3.9%	3.4%
Hispanic	107	73	2.1%	1.4%
Native American/Other	39	39	0.8%	0.7%
Asian	22	7	0.4%	0.1%
Black	11	22	0.2%	0.4%

Atchison County, Missouri has an estimated population of 5,187, a slight decrease from the 5,305 recorded in the 2020 Census. The population is 92.6% White, 3.9% Multiracial, 2.1% Hispanic, 0.8% Native American/Other, 0.4% Asian, and 0.2% Black. This demographic dot map shows the population of Atchison County, with one dot drawn for each person counted by the Census, color-coded by race.

Atchison has become more racially diverse since the 2020 Census. It is considerably less diverse than Missouri overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Atchison County, that probability was 11.6% in 2020 and 14.0% in the most recent ACS estimates.

Atchison County is ranked the 108th most populous county in Missouri, out of 115 counties. Atchison County was ranked the 107th most populous county in the 2020 Census.

Atchison County's White Population

4,804 residents of Atchison County, or 92.6% of the population, identify as White. The share of White residents in Atchison County is significantly higher than in Missouri overall, where 76.3% of the population is White. Atchison County ranks 12th statewide in terms of White residents as a share of the population, out of 115 counties.

Since the 2020 Census, Atchison County's White population has declined by an estimated 3.6%. White residents' share of Atchison County's population has decreased from 93.9% to 92.6%.

Atchison County is more White than neighboring Fremont County (91.4% White), Page County (90.3% White), Richardson County (90.4% White), and Nemaha County (89.3% White). Atchison County is less White than neighboring Holt County (93.3% White).

Atchison County's Black Population

11 residents of Atchison County, or 0.2% of the population, identify as Black. The share of Black residents in Atchison County is considerably lower than in Missouri overall, where 10.9% of the population is Black. Atchison County ranks 84th statewide in terms of Black residents as a share of the population, out of 115 counties.

Since the 2020 Census, Atchison County's Black population has declined by an estimated 50.0%. Black residents' share of Atchison County's population has remained roughly unchanged at 0.2%.

Atchison County is less Black than neighboring Fremont County (0.4% Black), Holt County (0.4% Black), Page County (1.7% Black), and Nemaha County (1.1% Black).

Atchison County's Asian Population

22 residents of Atchison County, or 0.4% of the population, identify as Asian. The share of Asian residents in Atchison County is comparable to the share in Missouri overall, where 2.1% of the population is Asian. Atchison County ranks 105th statewide in terms of Asian residents as a share of the population, out of 115 counties.

Since the 2020 Census, Atchison County's Asian population has grown by an estimated 214.3%. Asian residents' share of Atchison County's population has remained roughly unchanged at 0.4%.

Atchison County is more Asian than neighboring Fremont County (0.2% Asian), Richardson County (0.1% Asian), and Nemaha County (0.1% Asian). Atchison County is less Asian than neighboring Page County (0.5% Asian).

Atchison County's Hispanic Population

107 residents of Atchison County, or 2.1% of the population, identify as Hispanic. The share of Hispanic residents in Atchison County is slightly lower than in Missouri overall, where 5.2% of the population is Hispanic. Atchison County ranks 101st statewide in terms of Hispanic residents as a share of the population, out of 115 counties.

Since the 2020 Census, Atchison County's Hispanic population has grown by an estimated 46.6%. Hispanic residents' share of Atchison County's population has increased from 1.4% to 2.1%.

Atchison County is more Hispanic than neighboring Holt County (1.9% Hispanic). Atchison County is less Hispanic than neighboring Fremont County (3.4% Hispanic), Page County (3.3% Hispanic), Richardson County (2.4% Hispanic), and Nemaha County (3.3% Hispanic).

Atchison County's Native American/Other Population

39 residents of Atchison County, or 0.8% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Atchison County is comparable to the share in Missouri overall, where 0.7% of the population is Native American/Other. Atchison County ranks 50th statewide in terms of Native American/Other residents as a share of the population, out of 115 counties.

Since the 2020 Census, Atchison County's Native American/Other population has remained roughly the same. Native American/Other residents' share of Atchison County's population has remained roughly unchanged at 0.8%.

Atchison County is more Native American/Other than neighboring Fremont County (0.1% Native American/Other), Holt County (0.6% Native American/Other), and Page County (0.7% Native American/Other). Atchison County is less Native American/Other than neighboring Richardson County (1.6% Native American/Other).

Atchison County's Multiracial Population

204 residents of Atchison County, or 3.9% of the population, identify as Multiracial. The share of Multiracial residents in Atchison County is comparable to the share in Missouri overall, where 4.8% of the population is Multiracial. Atchison County ranks 93rd statewide in terms of Multiracial residents as a share of the population, out of 115 counties.

Since the 2020 Census, Atchison County's Multiracial population has grown by an estimated 12.7%. Multiracial residents' share of Atchison County's population has increased from 3.4% to 3.9%.

Atchison County is more Multiracial than neighboring Holt County (3.4% Multiracial), and Page County (3.4% Multiracial). Atchison County is less Multiracial than neighboring Fremont County (4.6% Multiracial), Richardson County (5.2% Multiracial), and Nemaha County (5.4% 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.