Green County Demographics

A map of Green County's Population by Race

Green County, Wisconsin has an estimated population of 37,017, a less than 1% change from the 37,093 recorded in the 2020 Census. The population is 92.0% White, 4.2% Hispanic, 2.1% Multiracial, 0.8% Black, 0.6% Asian, and 0.3% Native American/Other. This demographic dot map shows the population of Green County, with one dot drawn for each person counted by the Census, color-coded by race.

Green has become slightly less racially diverse since 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 Green County, that probability was 15.9% in 2020 and 15.2% in the most recent ACS estimates.

Green County is ranked the 40th most populous county in Wisconsin, out of 72 counties. Green County was ranked the 40th most populous county in the 2020 Census.

Green County's White Population

34,049 residents of Green County, or 92.0% of the population, identify as White. The share of White residents in Green County is considerably higher than in Wisconsin overall, where 78.6% of the population is White. Green County ranks 23rd statewide in terms of White residents as a share of the population, out of 72 counties.

Since the 2020 Census, Green County's White population has remained roughly the same. White residents' share of Green County's population has remained roughly unchanged at 92.0%.

Green County is more White than neighboring Stephenson County (78.9% White), Dane County (75.8% White), Lafayette County (89.7% White), Rock County (79.6% White), and Winnebago County (63.8% White).

Green County's Black Population

284 residents of Green County, or 0.8% of the population, identify as Black. The share of Black residents in Green County is lower than in Wisconsin overall, where 5.9% of the population is Black. Green County ranks 41st statewide in terms of Black residents as a share of the population, out of 72 counties.

Since the 2020 Census, Green County's Black population has grown by an estimated 41.3%. Black residents' share of Green County's population has remained roughly unchanged at 0.8%.

Green County is more Black than neighboring Lafayette County (0.4% Black). Green County is less Black than neighboring Stephenson County (8.5% Black), Dane County (5.1% Black), Rock County (4.6% Black), and Winnebago County (11.6% Black).

Green County's Asian Population

209 residents of Green County, or 0.6% of the population, identify as Asian. The share of Asian residents in Green County is slightly lower than in Wisconsin overall, where 2.9% of the population is Asian. Green County ranks 42nd statewide in terms of Asian residents as a share of the population, out of 72 counties.

Since the 2020 Census, Green County's Asian population has grown by an estimated 22.9%. Asian residents' share of Green County's population has remained roughly unchanged at 0.6%.

Green County is more Asian than neighboring Lafayette County (0.5% Asian). Green County is less Asian than neighboring Stephenson County (0.8% Asian), Dane County (6.1% Asian), Rock County (1.1% Asian), and Winnebago County (2.9% Asian).

Green County's Hispanic Population

1,567 residents of Green County, or 4.2% of the population, identify as Hispanic. The share of Hispanic residents in Green County is slightly lower than in Wisconsin overall, where 8% of the population is Hispanic. Green County ranks 25th statewide in terms of Hispanic residents as a share of the population, out of 72 counties.

Since the 2020 Census, Green County's Hispanic population has grown by an estimated 4.5%. Hispanic residents' share of Green County's population has remained roughly unchanged at 4.2%.

Green County is less Hispanic than neighboring Stephenson County (5.6% Hispanic), Dane County (7.8% Hispanic), Lafayette County (7.1% Hispanic), Rock County (10.1% Hispanic), and Winnebago County (15.5% Hispanic).

Green County's Native American/Other Population

117 residents of Green 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 Green County is comparable to the share in Wisconsin overall, where 0.9% of the population is Native American/Other. Green County ranks 69th statewide in terms of Native American/Other residents as a share of the population, out of 72 counties.

Since the 2020 Census, Green County's Native American/Other population has declined by an estimated 8.6%. Native American/Other residents' share of Green County's population has remained roughly unchanged at 0.3%.

Green County is less Native American/Other than neighboring Stephenson County (0.6% Native American/Other), Dane County (0.6% Native American/Other), Lafayette County (0.5% Native American/Other), and Winnebago County (0.5% Native American/Other).

Green County's Multiracial Population

791 residents of Green County, or 2.1% of the population, identify as Multiracial. The share of Multiracial residents in Green County is comparable to the share in Wisconsin overall, where 3.7% of the population is Multiracial. Green County ranks 35th statewide in terms of Multiracial residents as a share of the population, out of 72 counties.

Since the 2020 Census, Green County's Multiracial population has declined by an estimated 30.2%. Multiracial residents' share of Green County's population has decreased from 3.1% to 2.1%.

Green County is more Multiracial than neighboring Lafayette County (1.8% Multiracial). Green County is less Multiracial than neighboring Stephenson County (5.6% Multiracial), Dane County (4.6% Multiracial), Rock County (4.2% Multiracial), and Winnebago County (5.8% 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.