Winnebago County Demographics

A map of Winnebago County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	9,415	9,472	89.0%	88.7%
Hispanic	619	594	5.8%	5.6%
Black	211	204	2.0%	1.9%
Multiracial	161	262	1.5%	2.5%
Asian	140	94	1.3%	0.9%
Native American/Other	37	53	0.3%	0.5%

Winnebago County, Iowa has an estimated population of 10,583, a less than 1% change from the 10,679 recorded in the 2020 Census. The population is 89.0% White, 5.8% Hispanic, 2.0% Black, 1.5% Multiracial, 1.3% Asian, and 0.3% Native American/Other. This demographic dot map shows the population of Winnebago County, with one dot drawn for each person counted by the Census, color-coded by race.

Winnebago is about as racially diverse as it was in 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 Winnebago County, that probability was 20.9% in 2020 and 20.4% in the most recent ACS estimates.

Winnebago County is ranked the 70th most populous county in Iowa, out of 99 counties. Winnebago County was ranked the 69th most populous county in the 2020 Census.

Winnebago County's White Population

9,415 residents of Winnebago County, or 89.0% of the population, identify as White. The share of White residents in Winnebago County is higher than in Iowa overall, where 82.3% of the population is White. Winnebago County ranks 68th statewide in terms of White residents as a share of the population, out of 99 counties.

Since the 2020 Census, Winnebago County's White population has remained roughly the same. White residents' share of Winnebago County's population has remained roughly unchanged at 89.0%.

Winnebago County is more White than neighboring Faribault County (88% White), and Freeborn County (81.5% White). Winnebago County is less White than neighboring Hancock County (90.1% White), Worth County (93.3% White), and Kossuth County (91.7% White).

Winnebago County's Black Population

211 residents of Winnebago County, or 2.0% of the population, identify as Black. The share of Black residents in Winnebago County is comparable to the share in Iowa overall, where 3.8% of the population is Black. Winnebago County ranks 26th statewide in terms of Black residents as a share of the population, out of 99 counties.

Since the 2020 Census, Winnebago County's Black population has grown by an estimated 3.4%. Black residents' share of Winnebago County's population has remained roughly unchanged at 2.0%.

Winnebago County is more Black than neighboring Hancock County (0.4% Black), Faribault County (0.6% Black), Worth County (0.8% Black), Freeborn County (1.5% Black), and Kossuth County (0.7% Black).

Winnebago County's Asian Population

140 residents of Winnebago County, or 1.3% of the population, identify as Asian. The share of Asian residents in Winnebago County is comparable to the share in Iowa overall, where 2.5% of the population is Asian. Winnebago County ranks 26th statewide in terms of Asian residents as a share of the population, out of 99 counties.

Since the 2020 Census, Winnebago County's Asian population has grown by an estimated 48.9%. Asian residents' share of Winnebago County's population has remained roughly unchanged at 1.3%.

Winnebago County is more Asian than neighboring Hancock County (0.9% Asian), Faribault County (0.6% Asian), Worth County (0.4% Asian), and Kossuth County (0.4% Asian). Winnebago County is less Asian than neighboring Freeborn County (3.5% Asian).

Winnebago County's Hispanic Population

619 residents of Winnebago County, or 5.8% of the population, identify as Hispanic. The share of Hispanic residents in Winnebago County is comparable to the share in Iowa overall, where 7.3% of the population is Hispanic. Winnebago County ranks 28th statewide in terms of Hispanic residents as a share of the population, out of 99 counties.

Since the 2020 Census, Winnebago County's Hispanic population has grown by an estimated 4.2%. Hispanic residents' share of Winnebago County's population has remained roughly unchanged at 5.8%.

Winnebago County is more Hispanic than neighboring Worth County (3.5% Hispanic), and Kossuth County (4.5% Hispanic). Winnebago County is less Hispanic than neighboring Hancock County (6% Hispanic), Faribault County (8.1% Hispanic), and Freeborn County (10.8% Hispanic).

Winnebago County's Native American/Other Population

37 residents of Winnebago 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 Winnebago County is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Winnebago County ranks 44th statewide in terms of Native American/Other residents as a share of the population, out of 99 counties.

Since the 2020 Census, Winnebago County's Native American/Other population has declined by an estimated 30.2%. Native American/Other residents' share of Winnebago County's population has remained roughly unchanged at 0.3%.

Winnebago County is more Native American/Other than neighboring Worth County (0.1% Native American/Other). Winnebago County is less Native American/Other than neighboring Hancock County (0.6% Native American/Other), Faribault County (0.6% Native American/Other), and Freeborn County (0.5% Native American/Other).

Winnebago County's Multiracial Population

161 residents of Winnebago County, or 1.5% of the population, identify as Multiracial. The share of Multiracial residents in Winnebago County is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Winnebago County ranks 51st statewide in terms of Multiracial residents as a share of the population, out of 99 counties.

Since the 2020 Census, Winnebago County's Multiracial population has declined by an estimated 38.5%. Multiracial residents' share of Winnebago County's population has decreased from 2.5% to 1.5%.

Winnebago County is less Multiracial than neighboring Hancock County (1.9% Multiracial), Faribault County (2.1% Multiracial), Worth County (1.8% Multiracial), Freeborn County (2.2% Multiracial), and Kossuth 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.