Adams County Demographics

A map of Adams County's Population by Race

Adams County, Iowa has an estimated population of 3,622, a slight decrease from the 3,704 recorded in the 2020 Census. The population is 94.5% White, 3.2% Multiracial, 1.7% Hispanic, 0.3% Black, 0.3% Native American/Other, and 0.0% Asian. This demographic dot map shows the population of Adams County, with one dot drawn for each person counted by the Census, color-coded by race.

Adams has become slightly more 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 Adams County, that probability was 9.7% in 2020 and 10.6% in the most recent ACS estimates.

Adams County is ranked the 99th most populous county in Iowa, out of 99 counties. Adams County was ranked the 99th most populous county in the 2020 Census.

Adams County's White Population

3,422 residents of Adams County, or 94.5% of the population, identify as White. The share of White residents in Adams County is considerably higher than in Iowa overall, where 82.3% of the population is White. Adams County ranks 11th statewide in terms of White residents as a share of the population, out of 99 counties.

Since the 2020 Census, Adams County's White population has declined by an estimated 2.7%. White residents' share of Adams County's population has decreased from 95.0% to 94.5%.

Adams County is more White than neighboring Taylor County (88.9% White), Adair County (93.1% White), Cass County (93.5% White), Union County (91.9% White), and Montgomery County (92% White).

Adams County's Black Population

11 residents of Adams County, or 0.3% of the population, identify as Black. The share of Black residents in Adams County is slightly lower than in Iowa overall, where 3.8% of the population is Black. Adams County ranks 80th statewide in terms of Black residents as a share of the population, out of 99 counties.

Since the 2020 Census, Adams County's Black population has declined by an estimated 8.3%. Black residents' share of Adams County's population has remained roughly unchanged at 0.3%.

Adams County is more Black than neighboring Taylor County (0.2% Black). Adams County is less Black than neighboring Adair County (1.4% Black), Cass County (0.9% Black), Union County (0.8% Black), and Montgomery County (1.8% Black).

Adams County's Asian Population

0 residents of Adams County, or 0.0% of the population, identify as Asian. The share of Asian residents in Adams County is slightly lower than in Iowa overall, where 2.5% of the population is Asian. Adams County ranks 62nd statewide in terms of Asian residents as a share of the population, out of 99 counties.

Since the 2020 Census, Adams County's Asian population has declined by an estimated 100.0%. Asian residents' share of Adams County's population has remained roughly unchanged at 0.0%.

Adams County is less Asian than neighboring Adair County (0.3% Asian), Cass County (0.5% Asian), Union County (0.9% Asian), and Montgomery County (1.1% Asian).

Adams County's Hispanic Population

63 residents of Adams County, or 1.7% of the population, identify as Hispanic. The share of Hispanic residents in Adams County is lower than in Iowa overall, where 7.3% of the population is Hispanic. Adams County ranks 98th statewide in terms of Hispanic residents as a share of the population, out of 99 counties.

Since the 2020 Census, Adams County's Hispanic population has grown by an estimated 50.0%. Hispanic residents' share of Adams County's population has increased from 1.1% to 1.7%.

Adams County is more Hispanic than neighboring Montgomery County (0.8% Hispanic). Adams County is less Hispanic than neighboring Taylor County (8.1% Hispanic), Adair County (3.2% Hispanic), Cass County (2.7% Hispanic), and Union County (3.8% Hispanic).

Adams County's Native American/Other Population

10 residents of Adams County, or 0.3% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Adams County is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Adams County ranks 15th statewide in terms of Native American/Other residents as a share of the population, out of 99 counties.

Since the 2020 Census, Adams County's Native American/Other population has declined by an estimated 66.7%. Native American/Other residents' share of Adams County's population has decreased from 0.8% to 0.3%.

Adams County is more Native American/Other than neighboring Union County (0.2% Native American/Other). Adams County is less Native American/Other than neighboring Taylor County (0.7% Native American/Other), Adair County (0.7% Native American/Other), Cass County (0.8% Native American/Other), and Montgomery County (1.1% Native American/Other).

Adams County's Multiracial Population

116 residents of Adams County, or 3.2% of the population, identify as Multiracial. The share of Multiracial residents in Adams County is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Adams County ranks 59th statewide in terms of Multiracial residents as a share of the population, out of 99 counties.

Since the 2020 Census, Adams County's Multiracial population has grown by an estimated 30.3%. Multiracial residents' share of Adams County's population has increased from 2.4% to 3.2%.

Adams County is more Multiracial than neighboring Taylor County (2.2% Multiracial), Adair County (1.4% Multiracial), Cass County (1.6% Multiracial), and Union County (2.4% 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.