Webster County Demographics

A map of Webster County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	30,940	31,372	83.9%	84.8%
Hispanic	2,439	2,063	6.6%	5.6%
Multiracial	1,736	1,289	4.7%	3.5%
Black	1,201	1,773	3.3%	4.8%
Asian	437	295	1.2%	0.8%
Native American/Other	133	207	0.4%	0.6%

Webster County, Iowa has an estimated population of 36,886, a less than 1% change from the 36,999 recorded in the 2020 Census. The population is 83.9% White, 6.6% Hispanic, 4.7% Multiracial, 3.3% Black, 1.2% Asian, and 0.4% Native American/Other. This demographic dot map shows the population of Webster County, with one dot drawn for each person counted by the Census, color-coded by race.

Webster has become more racially diverse since the 2020 Census. It is 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 Webster County, that probability was 27.4% in 2020 and 28.9% in the most recent ACS estimates.

Webster County is ranked the 18th most populous county in Iowa, out of 99 counties. Webster County was ranked the 18th most populous county in the 2020 Census.

Webster County's White Population

30,940 residents of Webster County, or 83.9% of the population, identify as White. The share of White residents in Webster County is comparable to the share in Iowa overall, where 82.3% of the population is White. Webster County ranks 77th statewide in terms of White residents as a share of the population, out of 99 counties.

Since the 2020 Census, Webster County's White population has declined by an estimated 1.4%. White residents' share of Webster County's population has decreased from 84.8% to 83.9%.

Webster County is more White than neighboring Hamilton County (83.8% White). Webster County is less White than neighboring Humboldt County (90.4% White), Greene County (92.3% White), Calhoun County (91.3% White), and Boone County (92.9% White).

Webster County's Black Population

1,201 residents of Webster County, or 3.3% of the population, identify as Black. The share of Black residents in Webster County is comparable to the share in Iowa overall, where 3.8% of the population is Black. Webster County ranks 7th statewide in terms of Black residents as a share of the population, out of 99 counties.

Since the 2020 Census, Webster County's Black population has declined by an estimated 32.3%. Black residents' share of Webster County's population has decreased from 4.8% to 3.3%.

Webster County is more Black than neighboring Humboldt County (0.3% Black), Greene County (0.1% Black), Calhoun County (1.6% Black), Boone County (1.2% Black), and Hamilton County (1% Black).

Webster County's Asian Population

437 residents of Webster County, or 1.2% of the population, identify as Asian. The share of Asian residents in Webster County is comparable to the share in Iowa overall, where 2.5% of the population is Asian. Webster County ranks 29th statewide in terms of Asian residents as a share of the population, out of 99 counties.

Since the 2020 Census, Webster County's Asian population has grown by an estimated 48.1%. Asian residents' share of Webster County's population has remained roughly unchanged at 1.2%.

Webster County is more Asian than neighboring Humboldt County (1% Asian), Greene County (0.6% Asian), Calhoun County (0.2% Asian), and Boone County (0.2% Asian). Webster County is less Asian than neighboring Hamilton County (2.3% Asian).

Webster County's Hispanic Population

2,439 residents of Webster County, or 6.6% of the population, identify as Hispanic. The share of Hispanic residents in Webster County is comparable to the share in Iowa overall, where 7.3% of the population is Hispanic. Webster County ranks 27th statewide in terms of Hispanic residents as a share of the population, out of 99 counties.

Since the 2020 Census, Webster County's Hispanic population has grown by an estimated 18.2%. Hispanic residents' share of Webster County's population has increased from 5.6% to 6.6%.

Webster County is more Hispanic than neighboring Humboldt County (5.7% Hispanic), Greene County (3.5% Hispanic), Calhoun County (2.7% Hispanic), and Boone County (2.9% Hispanic). Webster County is less Hispanic than neighboring Hamilton County (10.1% Hispanic).

Webster County's Native American/Other Population

133 residents of Webster 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 Webster County is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Webster County ranks 33rd statewide in terms of Native American/Other residents as a share of the population, out of 99 counties.

Since the 2020 Census, Webster County's Native American/Other population has declined by an estimated 35.7%. Native American/Other residents' share of Webster County's population has remained roughly unchanged at 0.4%.

Webster County is more Native American/Other than neighboring Greene County (0.3% Native American/Other), and Boone County (0% Native American/Other). Webster County is less Native American/Other than neighboring Humboldt County (1% Native American/Other), Calhoun County (0.6% Native American/Other), and Hamilton County (0.7% Native American/Other).

Webster County's Multiracial Population

1,736 residents of Webster County, or 4.7% of the population, identify as Multiracial. The share of Multiracial residents in Webster County is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Webster County ranks 14th statewide in terms of Multiracial residents as a share of the population, out of 99 counties.

Since the 2020 Census, Webster County's Multiracial population has grown by an estimated 34.7%. Multiracial residents' share of Webster County's population has increased from 3.5% to 4.7%.

Webster County is more Multiracial than neighboring Humboldt County (1.5% Multiracial), Greene County (3.1% Multiracial), Calhoun County (3.6% Multiracial), Boone County (2.8% Multiracial), and Hamilton County (2.2% 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.