Boone County Demographics

A map of Boone County's Population by Race

Boone County, Iowa has an estimated population of 26,668, a less than 1% change from the 26,715 recorded in the 2020 Census. The population is 92.9% White, 2.9% Hispanic, 2.8% Multiracial, 1.2% Black, 0.2% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Boone County, with one dot drawn for each person counted by the Census, color-coded by race.

Boone has become slightly less racially diverse since the 2020 Census. It is considerably less diverse than Iowa overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Boone County, that probability was 14.2% in 2020 and 13.5% in the most recent ACS estimates.

Boone County is ranked the 23rd most populous county in Iowa, out of 99 counties. Boone County was ranked the 23rd most populous county in the 2020 Census.

Boone County's White Population

24,771 residents of Boone County, or 92.9% of the population, identify as White. The share of White residents in Boone County is considerably higher than in Iowa overall, where 82.3% of the population is White. Boone County ranks 43rd statewide in terms of White residents as a share of the population, out of 99 counties.

Since the 2020 Census, Boone County's White population has remained roughly the same. White residents' share of Boone County's population has remained roughly unchanged at 92.9%.

Boone County is more White than neighboring Dallas County (80.9% White), Hamilton County (83.8% White), Webster County (83.9% White), Greene County (92.3% White), and Story County (81% White).

Boone County's Black Population

307 residents of Boone County, or 1.2% of the population, identify as Black. The share of Black residents in Boone County is slightly lower than in Iowa overall, where 3.8% of the population is Black. Boone County ranks 35th statewide in terms of Black residents as a share of the population, out of 99 counties.

Since the 2020 Census, Boone County's Black population has grown by an estimated 6.2%. Black residents' share of Boone County's population has remained roughly unchanged at 1.2%.

Boone County is more Black than neighboring Hamilton County (1% Black), and Greene County (0.1% Black). Boone County is less Black than neighboring Dallas County (3% Black), Webster County (3.3% Black), and Story County (2.7% Black).

Boone County's Asian Population

53 residents of Boone County, or 0.2% of the population, identify as Asian. The share of Asian residents in Boone County is slightly lower than in Iowa overall, where 2.5% of the population is Asian. Boone County ranks 59th statewide in terms of Asian residents as a share of the population, out of 99 counties.

Since the 2020 Census, Boone County's Asian population has declined by an estimated 47.0%. Asian residents' share of Boone County's population has remained roughly unchanged at 0.2%.

Boone County is less Asian than neighboring Dallas County (4.9% Asian), Hamilton County (2.3% Asian), Webster County (1.2% Asian), Greene County (0.6% Asian), and Story County (6.6% Asian).

Boone County's Hispanic Population

783 residents of Boone County, or 2.9% of the population, identify as Hispanic. The share of Hispanic residents in Boone County is slightly lower than in Iowa overall, where 7.3% of the population is Hispanic. Boone County ranks 69th statewide in terms of Hispanic residents as a share of the population, out of 99 counties.

Since the 2020 Census, Boone County's Hispanic population has grown by an estimated 10.4%. Hispanic residents' share of Boone County's population has remained roughly unchanged at 2.9%.

Boone County is less Hispanic than neighboring Dallas County (6.9% Hispanic), Hamilton County (10.1% Hispanic), Webster County (6.6% Hispanic), Greene County (3.5% Hispanic), and Story County (5.2% Hispanic).

Boone County's Native American/Other Population

11 residents of Boone County, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Boone County is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Boone County ranks 64th statewide in terms of Native American/Other residents as a share of the population, out of 99 counties.

Since the 2020 Census, Boone County's Native American/Other population has declined by an estimated 88.5%. Native American/Other residents' share of Boone County's population has remained roughly unchanged at 0.0%.

Boone County is less Native American/Other than neighboring Dallas County (0.5% Native American/Other), Hamilton County (0.7% Native American/Other), Webster County (0.4% Native American/Other), Greene County (0.3% Native American/Other), and Story County (0.5% Native American/Other).

Boone County's Multiracial Population

743 residents of Boone County, or 2.8% of the population, identify as Multiracial. The share of Multiracial residents in Boone County is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Boone County ranks 27th statewide in terms of Multiracial residents as a share of the population, out of 99 counties.

Since the 2020 Census, Boone County's Multiracial population has declined by an estimated 7.2%. Multiracial residents' share of Boone County's population has remained roughly unchanged at 2.8%.

Boone County is more Multiracial than neighboring Hamilton County (2.2% Multiracial). Boone County is less Multiracial than neighboring Dallas County (3.9% Multiracial), Webster County (4.7% Multiracial), Greene County (3.1% Multiracial), and Story County (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.