Grant County Demographics

A map of Grant County's Population by Race

Grant County, Wisconsin has an estimated population of 51,770, a less than 1% change from the 51,938 recorded in the 2020 Census. The population is 93.0% White, 2.6% Hispanic, 1.9% Multiracial, 1.5% Black, 0.7% Asian, and 0.4% Native American/Other. This demographic dot map shows the population of Grant County, with one dot drawn for each person counted by the Census, color-coded by race.

Grant is about as racially diverse as it was in the 2020 Census. It is considerably less diverse than Wisconsin overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Grant County, that probability was 13.3% in 2020 and 13.4% in the most recent ACS estimates.

Grant County is ranked the 28th most populous county in Wisconsin, out of 72 counties. Grant County was ranked the 28th most populous county in the 2020 Census.

Grant County's White Population

48,129 residents of Grant County, or 93.0% of the population, identify as White. The share of White residents in Grant County is considerably higher than in Wisconsin overall, where 78.6% of the population is White. Grant County ranks 13th statewide in terms of White residents as a share of the population, out of 72 counties.

Since the 2020 Census, Grant County's White population has remained roughly the same. White residents' share of Grant County's population has remained roughly unchanged at 93.0%.

Grant County is more White than neighboring Crawford County (92.7% White), Dubuque County (88.3% White), Richland County (92.1% White), Iowa County (92.4% White), and Lafayette County (89.7% White).

Grant County's Black Population

764 residents of Grant County, or 1.5% of the population, identify as Black. The share of Black residents in Grant County is slightly lower than in Wisconsin overall, where 5.9% of the population is Black. Grant County ranks 24th statewide in terms of Black residents as a share of the population, out of 72 counties.

Since the 2020 Census, Grant County's Black population has grown by an estimated 12.5%. Black residents' share of Grant County's population has remained roughly unchanged at 1.5%.

Grant County is more Black than neighboring Richland County (0.3% Black), Iowa County (0.8% Black), and Lafayette County (0.4% Black). Grant County is less Black than neighboring Crawford County (1.6% Black), and Dubuque County (2.9% Black).

Grant County's Asian Population

364 residents of Grant County, or 0.7% of the population, identify as Asian. The share of Asian residents in Grant County is slightly lower than in Wisconsin overall, where 2.9% of the population is Asian. Grant County ranks 25th statewide in terms of Asian residents as a share of the population, out of 72 counties.

Since the 2020 Census, Grant County's Asian population has declined by an estimated 11.4%. Asian residents' share of Grant County's population has remained roughly unchanged at 0.7%.

Grant County is more Asian than neighboring Crawford County (0.5% Asian), and Lafayette County (0.5% Asian). Grant County is less Asian than neighboring Dubuque County (1.3% Asian), Richland County (0.9% Asian), and Iowa County (0.9% Asian).

Grant County's Hispanic Population

1,332 residents of Grant County, or 2.6% of the population, identify as Hispanic. The share of Hispanic residents in Grant County is lower than in Wisconsin overall, where 8% of the population is Hispanic. Grant County ranks 50th statewide in terms of Hispanic residents as a share of the population, out of 72 counties.

Since the 2020 Census, Grant County's Hispanic population has grown by an estimated 7.8%. Hispanic residents' share of Grant County's population has remained roughly unchanged at 2.6%.

Grant County is more Hispanic than neighboring Crawford County (2% Hispanic), and Iowa County (2.3% Hispanic). Grant County is less Hispanic than neighboring Dubuque County (3.3% Hispanic), Richland County (3.3% Hispanic), and Lafayette County (7.1% Hispanic).

Grant County's Native American/Other Population

188 residents of Grant 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 Grant County is comparable to the share in Wisconsin overall, where 0.9% of the population is Native American/Other. Grant County ranks 70th statewide in terms of Native American/Other residents as a share of the population, out of 72 counties.

Since the 2020 Census, Grant County's Native American/Other population has grown by an estimated 16.8%. Native American/Other residents' share of Grant County's population has remained roughly unchanged at 0.4%.

Grant County is less Native American/Other than neighboring Crawford County (0.5% Native American/Other), Dubuque County (1% Native American/Other), Richland County (0.6% Native American/Other), and Lafayette County (0.5% Native American/Other).

Grant County's Multiracial Population

993 residents of Grant County, or 1.9% of the population, identify as Multiracial. The share of Multiracial residents in Grant County is comparable to the share in Wisconsin overall, where 3.7% of the population is Multiracial. Grant County ranks 68th statewide in terms of Multiracial residents as a share of the population, out of 72 counties.

Since the 2020 Census, Grant County's Multiracial population has declined by an estimated 11.8%. Multiracial residents' share of Grant County's population has remained roughly unchanged at 1.9%.

Grant County is more Multiracial than neighboring Lafayette County (1.8% Multiracial). Grant County is less Multiracial than neighboring Crawford County (2.8% Multiracial), Dubuque County (3.3% Multiracial), Richland County (2.8% Multiracial), and Iowa County (3.3% 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.