Miller County Demographics

A map of Miller County's Population by Race

Miller County, Missouri has an estimated population of 25,269, a slight increase from the 24,722 recorded in the 2020 Census. The population is 93.3% White, 2.6% Multiracial, 2.2% Hispanic, 1.1% Black, 0.5% Native American/Other, and 0.4% Asian. This demographic dot map shows the population of Miller County, with one dot drawn for each person counted by the Census, color-coded by race.

Miller has become less 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 Miller County, that probability was 13.9% in 2020 and 12.8% in the most recent ACS estimates.

Miller County is ranked the 42nd most populous county in Missouri, out of 115 counties. Miller County was ranked the 43rd most populous county in the 2020 Census.

Miller County's White Population

23,586 residents of Miller County, or 93.3% of the population, identify as White. The share of White residents in Miller County is significantly higher than in Missouri overall, where 76.3% of the population is White. Miller County ranks 28th statewide in terms of White residents as a share of the population, out of 115 counties.

Since the 2020 Census, Miller County's White population has grown by an estimated 3.0%. White residents' share of Miller County's population has increased from 92.7% to 93.3%.

Miller County is more White than neighboring Cole County (79.2% White), Camden County (92.1% White), Moniteau County (88.1% White), Pulaski County (68.5% White), and Morgan County (91.9% White).

Miller County's Black Population

279 residents of Miller County, or 1.1% of the population, identify as Black. The share of Black residents in Miller County is lower than in Missouri overall, where 10.9% of the population is Black. Miller County ranks 79th statewide in terms of Black residents as a share of the population, out of 115 counties.

Since the 2020 Census, Miller County's Black population has grown by an estimated 138.5%. Black residents' share of Miller County's population has increased from 0.5% to 1.1%.

Miller County is more Black than neighboring Camden County (0.9% Black), and Morgan County (0.2% Black). Miller County is less Black than neighboring Cole County (9.7% Black), Moniteau County (2.2% Black), and Pulaski County (10.1% Black).

Miller County's Asian Population

96 residents of Miller County, or 0.4% of the population, identify as Asian. The share of Asian residents in Miller County is comparable to the share in Missouri overall, where 2.1% of the population is Asian. Miller County ranks 84th statewide in terms of Asian residents as a share of the population, out of 115 counties.

Since the 2020 Census, Miller County's Asian population has grown by an estimated 50.0%. Asian residents' share of Miller County's population has remained roughly unchanged at 0.4%.

Miller County is less Asian than neighboring Cole County (1.4% Asian), Camden County (0.6% Asian), Moniteau County (0.5% Asian), and Pulaski County (2.1% Asian).

Miller County's Hispanic Population

547 residents of Miller County, or 2.2% of the population, identify as Hispanic. The share of Hispanic residents in Miller County is slightly lower than in Missouri overall, where 5.2% of the population is Hispanic. Miller County ranks 74th statewide in terms of Hispanic residents as a share of the population, out of 115 counties.

Since the 2020 Census, Miller County's Hispanic population has grown by an estimated 17.4%. Hispanic residents' share of Miller County's population has remained roughly unchanged at 2.2%.

Miller County is less Hispanic than neighboring Cole County (3.6% Hispanic), Camden County (3.5% Hispanic), Moniteau County (5.9% Hispanic), Pulaski County (11.5% Hispanic), and Morgan County (2.6% Hispanic).

Miller County's Native American/Other Population

115 residents of Miller 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 Miller County is comparable to the share in Missouri overall, where 0.7% of the population is Native American/Other. Miller County ranks 48th statewide in terms of Native American/Other residents as a share of the population, out of 115 counties.

Since the 2020 Census, Miller County's Native American/Other population has declined by an estimated 36.8%. Native American/Other residents' share of Miller County's population has remained roughly unchanged at 0.5%.

Miller County is more Native American/Other than neighboring Camden County (0.2% Native American/Other), Moniteau County (0.4% Native American/Other), and Morgan County (0.2% Native American/Other). Miller County is less Native American/Other than neighboring Cole County (0.9% Native American/Other), and Pulaski County (1.5% Native American/Other).

Miller County's Multiracial Population

646 residents of Miller County, or 2.6% of the population, identify as Multiracial. The share of Multiracial residents in Miller County is slightly lower than in Missouri overall, where 4.8% of the population is Multiracial. Miller County ranks 80th statewide in terms of Multiracial residents as a share of the population, out of 115 counties.

Since the 2020 Census, Miller County's Multiracial population has declined by an estimated 34.4%. Multiracial residents' share of Miller County's population has decreased from 4.0% to 2.6%.

Miller County is less Multiracial than neighboring Cole County (5.1% Multiracial), Camden County (2.8% Multiracial), Moniteau County (2.9% Multiracial), Pulaski County (6.3% Multiracial), and Morgan County (4.7% 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.