Green Lake County Demographics

A map of Green Lake County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	17,439	17,255	90.5%	90.7%
Hispanic	1,079	979	5.6%	5.1%
Multiracial	310	489	1.6%	2.6%
Asian	219	101	1.1%	0.5%
Native American/Other	126	88	0.7%	0.5%
Black	90	106	0.5%	0.6%

Green Lake County, Wisconsin has an estimated population of 19,263, a slight increase from the 19,018 recorded in the 2020 Census. The population is 90.5% White, 5.6% Hispanic, 1.6% Multiracial, 1.1% Asian, 0.7% Native American/Other, and 0.5% Black. This demographic dot map shows the population of Green Lake County, with one dot drawn for each person counted by the Census, color-coded by race.

Green Lake 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 Green Lake County, that probability was 17.3% in 2020 and 17.7% in the most recent ACS estimates.

Green Lake County is ranked the 55th most populous county in Wisconsin, out of 72 counties. Green Lake County was ranked the 55th most populous county in the 2020 Census.

Green Lake County's White Population

17,439 residents of Green Lake County, or 90.5% of the population, identify as White. The share of White residents in Green Lake County is considerably higher than in Wisconsin overall, where 78.6% of the population is White. Green Lake County ranks 30th statewide in terms of White residents as a share of the population, out of 72 counties.

Since the 2020 Census, Green Lake County's White population has grown by an estimated 1.1%. White residents' share of Green Lake County's population has remained roughly unchanged at 90.5%.

Green Lake County is more White than neighboring Waushara County (87.2% White), Columbia County (90.3% White), Winnebago County (84.9% White), and Dodge County (87.3% White). Green Lake County is less White than neighboring Marquette County (92.3% White).

Green Lake County's Black Population

90 residents of Green Lake County, or 0.5% of the population, identify as Black. The share of Black residents in Green Lake County is lower than in Wisconsin overall, where 5.9% of the population is Black. Green Lake County ranks 40th statewide in terms of Black residents as a share of the population, out of 72 counties.

Since the 2020 Census, Green Lake County's Black population has declined by an estimated 15.1%. Black residents' share of Green Lake County's population has remained roughly unchanged at 0.5%.

Green Lake County is less Black than neighboring Waushara County (1.8% Black), Columbia County (1.6% Black), Winnebago County (2.7% Black), and Dodge County (2.5% Black).

Green Lake County's Asian Population

219 residents of Green Lake County, or 1.1% of the population, identify as Asian. The share of Asian residents in Green Lake County is comparable to the share in Wisconsin overall, where 2.9% of the population is Asian. Green Lake County ranks 37th statewide in terms of Asian residents as a share of the population, out of 72 counties.

Since the 2020 Census, Green Lake County's Asian population has grown by an estimated 116.8%. Asian residents' share of Green Lake County's population has increased from 0.5% to 1.1%.

Green Lake County is more Asian than neighboring Marquette County (0.5% Asian), Waushara County (0.4% Asian), Columbia County (0.8% Asian), and Dodge County (0.5% Asian). Green Lake County is less Asian than neighboring Winnebago County (3.2% Asian).

Green Lake County's Hispanic Population

1,079 residents of Green Lake County, or 5.6% of the population, identify as Hispanic. The share of Hispanic residents in Green Lake County is slightly lower than in Wisconsin overall, where 8% of the population is Hispanic. Green Lake County ranks 20th statewide in terms of Hispanic residents as a share of the population, out of 72 counties.

Since the 2020 Census, Green Lake County's Hispanic population has grown by an estimated 10.2%. Hispanic residents' share of Green Lake County's population has increased from 5.1% to 5.6%.

Green Lake County is more Hispanic than neighboring Marquette County (3.7% Hispanic), Columbia County (4.1% Hispanic), and Winnebago County (5.1% Hispanic). Green Lake County is less Hispanic than neighboring Waushara County (7% Hispanic), and Dodge County (6.7% Hispanic).

Green Lake County's Native American/Other Population

126 residents of Green Lake County, or 0.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Green Lake County is comparable to the share in Wisconsin overall, where 0.9% of the population is Native American/Other. Green Lake County ranks 64th statewide in terms of Native American/Other residents as a share of the population, out of 72 counties.

Since the 2020 Census, Green Lake County's Native American/Other population has grown by an estimated 43.2%. Native American/Other residents' share of Green Lake County's population has remained roughly unchanged at 0.7%.

Green Lake County is more Native American/Other than neighboring Marquette County (0.4% Native American/Other), Columbia County (0.6% Native American/Other), and Dodge County (0.5% Native American/Other).

Green Lake County's Multiracial Population

310 residents of Green Lake County, or 1.6% of the population, identify as Multiracial. The share of Multiracial residents in Green Lake County is slightly lower than in Wisconsin overall, where 3.7% of the population is Multiracial. Green Lake County ranks 60th statewide in terms of Multiracial residents as a share of the population, out of 72 counties.

Since the 2020 Census, Green Lake County's Multiracial population has declined by an estimated 36.6%. Multiracial residents' share of Green Lake County's population has decreased from 2.6% to 1.6%.

Green Lake County is less Multiracial than neighboring Marquette County (2.6% Multiracial), Waushara County (2.8% Multiracial), Columbia County (2.6% Multiracial), Winnebago County (3.4% Multiracial), and Dodge County (2.5% 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.