Monona County Demographics
A map of Monona County's Population by Race
Monona County, Iowa has an estimated population of 8,557, a slight decrease from the 8,751 recorded in the 2020 Census. The population is 92.8% White, 3.8% Multiracial, 2.7% Hispanic, 0.4% Native American/Other, 0.2% Black, and 0.0% Asian. This demographic dot map shows the population of Monona County, with one dot drawn for each person counted by the Census, color-coded by race.
Monona has become 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 Monona County, that probability was 15.2% in 2020 and 13.6% in the most recent ACS estimates.
Monona County is ranked the 85th most populous county in Iowa, out of 99 counties. Monona County was ranked the 84th most populous county in the 2020 Census.
Monona County's White Population
7,944 residents of Monona County, or 92.8% of the population, identify as White. The share of White residents in Monona County is considerably higher than in Iowa overall, where 82.3% of the population is White. Monona County ranks 49th statewide in terms of White residents as a share of the population, out of 99 counties.
Since the 2020 Census, Monona County's White population has declined by an estimated 1.3%. White residents' share of Monona County's population has increased from 92.0% to 92.8%.
Monona County is more White than neighboring Woodbury County (67.1% White), Burt County (90.3% White), Ida County (91.5% White), and Crawford County (62.1% White). Monona County is less White than neighboring Harrison County (94.4% White).
Monona County's Black Population
21 residents of Monona County, or 0.2% of the population, identify as Black. The share of Black residents in Monona County is slightly lower than in Iowa overall, where 3.8% of the population is Black. Monona County ranks 81st statewide in terms of Black residents as a share of the population, out of 99 counties.
Since the 2020 Census, Monona County's Black population has declined by an estimated 25.0%. Black residents' share of Monona County's population has remained roughly unchanged at 0.2%.
Monona County is more Black than neighboring Harrison County (0.1% Black). Monona County is less Black than neighboring Woodbury County (4.9% Black), Ida County (0.3% Black), and Crawford County (0.9% Black).
Monona County's Asian Population
0 residents of Monona County, or 0.0% of the population, identify as Asian. The share of Asian residents in Monona County is slightly lower than in Iowa overall, where 2.5% of the population is Asian. Monona County ranks 74th statewide in terms of Asian residents as a share of the population, out of 99 counties.
Since the 2020 Census, Monona County's Asian population has declined by an estimated 100.0%. Asian residents' share of Monona County's population has remained roughly unchanged at 0.0%.
Monona County is less Asian than neighboring Woodbury County (2.3% Asian), Harrison County (0.3% Asian), Burt County (0.1% Asian), Ida County (0.7% Asian), and Crawford County (2.2% Asian).
Monona County's Hispanic Population
233 residents of Monona County, or 2.7% of the population, identify as Hispanic. The share of Hispanic residents in Monona County is slightly lower than in Iowa overall, where 7.3% of the population is Hispanic. Monona County ranks 67th statewide in terms of Hispanic residents as a share of the population, out of 99 counties.
Since the 2020 Census, Monona County's Hispanic population has declined by an estimated 1.3%. Hispanic residents' share of Monona County's population has remained roughly unchanged at 2.7%.
Monona County is more Hispanic than neighboring Harrison County (2.2% Hispanic). Monona County is less Hispanic than neighboring Woodbury County (19.1% Hispanic), Burt County (3.4% Hispanic), Ida County (4.1% Hispanic), and Crawford County (30.8% Hispanic).
Monona County's Native American/Other Population
38 residents of Monona County, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Monona County is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Monona County ranks 4th statewide in terms of Native American/Other residents as a share of the population, out of 99 counties.
Since the 2020 Census, Monona County's Native American/Other population has declined by an estimated 78.0%. Native American/Other residents' share of Monona County's population has decreased from 2.0% to 0.4%.
Monona County is more Native American/Other than neighboring Harrison County (0.2% Native American/Other), Ida County (0.2% Native American/Other), and Crawford County (0.1% Native American/Other). Monona County is less Native American/Other than neighboring Woodbury County (2.3% Native American/Other), and Burt County (1.8% Native American/Other).
Monona County's Multiracial Population
321 residents of Monona County, or 3.8% of the population, identify as Multiracial. The share of Multiracial residents in Monona County is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Monona County ranks 37th statewide in terms of Multiracial residents as a share of the population, out of 99 counties.
Since the 2020 Census, Monona County's Multiracial population has grown by an estimated 36.0%. Multiracial residents' share of Monona County's population has increased from 2.7% to 3.8%.
Monona County is more Multiracial than neighboring Harrison County (2.7% Multiracial), and Ida County (3.1% Multiracial). Monona County is less Multiracial than neighboring Woodbury County (4.3% Multiracial), Burt County (4.1% Multiracial), and Crawford County (3.9% 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.