Green Lake County, Wisconsin Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 55th-largest in Wisconsin
The population of Green Lake County, Wisconsin is 19,165 as of the 2023 American Community Survey, making it the 55th-largest county in Wisconsin. The median household income is $66,917, the median home value is $206,300, and the median age is 45.5.
The population of Green Lake County has grown 1.9% since 2010 (19,016 → 19,370), a +0.13% annualized rate.
19,165
Population
+0.13%
Annual growth
55
People / sq mi
$66,917
Median Income
$206,300
Median Home Value
Green Lake County covers 350 sq mi of land at 54.8 people per square mile.
About Green Lake County, WI
Green Lake County skews on age — the median resident is 45.5, older than the national median. Green Lake County is a county in Wisconsin with a population of 19,165.
The typical household here earns about $66,917, below the US median of $78,538. The poverty rate is 8.5%, below the national 12.4%. The typical home is valued at $206,300, with typical rent around $806.
Roughly 22.5% of adults have a bachelor’s, below the national 35.0%. Remote work is on the higher side at 10.9%, below the national 14.0%, and the average commute runs about 25 minutes each way.
The age structure shapes everything downstream in Green Lake County — from housing demand to the mix of working-age earners reflected in the income figures above.
Green Lake County Population History (2010-2024)
The county of Green Lake County had a population of 19,016 in 2010 and 19,370 in 2024, a 1.9% growth over 14 years. The peak was 19,417 in 2023. Average annual growth rate: 0.13%.
19,370
Population (2024)
19,016
Population (2010)
19,417
Peak (2023)
0.13%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 19,016 |
| 2011 | 19,055 |
| 2012 | 19,000 |
| 2013 | 18,885 |
| 2014 | 18,757 |
| 2015 | 18,703 |
| 2016 | 18,616 |
| 2017 | 18,731 |
| 2018 | 18,869 |
| 2019 | 18,910 |
| 2020 | 19,027 |
| 2021 | 19,262 |
| 2022 | 19,241 |
| 2023 | 19,417 |
| 2024 | 19,370 |
Race & Ethnicity
| White | 93.2% |
| Black or African American | 0.8% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.2% |
| Two or More Races | 0.2% |
Age & Sex
45.5
Median Age
50.0%
Female
50.0%
Male
22.9%
Age 65+
Age Distribution
Children (under 15): 17.6% · Seniors (65+): 22.9%
Income & Poverty
| Median household income | $66,917$-8,753 vs state |
| Mean household income | $87,958 |
| Per-capita income | $37,510 |
| Poverty rate | 8.5%+1.9% vs state |
| Unemployment rate | 1.8% |
| Employment-to-population | 56.2% |
Top Industries by Employment
The largest employment sector in Green Lake County is manufacturing, accounting for 23.9% of workers.
How residents commute
0.5%
Drive alone
3.7%
Carpool
76.3%
Public transit
10.9%
Work from home
24.5 min
Avg commute
Housing
$206,300$-41,100 vs state
Median home value
$806
Median rent
75.0%
Homeownership rate
10,731
Total housing units
75.9%
Occupied
24.1%
Vacant
25.0%
Renter-occupied
Social & access
91.0%
With health insurance
90.4%
With broadband internet
19.6%
Foreign-born
7.7%
Veterans (18+)
15.6%
With a disability
92.2%
Speak language other than English at home
Education
91.5%
High School+
22.5%
Bachelor's+
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Frequently Asked Questions
Green Lake County, Wisconsin has a population of 19,165 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 55th-largest county in Wisconsin. Population density is 55 people per square mile.
The population of Green Lake County has grown 1.9% since 2010 (19,016 → 19,370), a +0.13% annualized rate.
The median household income in Green Lake County, Wisconsin is $66,917, with mean (average) household income of $87,958 and per-capita income of $37,510. 8.5% of residents live below the federal poverty level.
In Green Lake County, the largest racial and ethnic groups are White (93.2%), Hispanic or Latino (1.2%), Black or African American (0.8%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Green Lake County, Wisconsin is 45.5 years. Residents are 50.0% female and 50.0% male.
The median home value in Green Lake County is $206,300 and median monthly rent is $806. 75.0% of occupied housing units are owner-occupied. The county has 10,731 total housing units, 24.1% of which are vacant.
The largest employment sector in Green Lake County, Wisconsin is manufacturing, employing 23.9% of workers. The unemployment rate is 1.8%.
Milwaukee is among the largest cities associated with Green Lake County, Wisconsin, with a population of 569,756.
Green Lake County, WI Climate
Green Lake County, WI has an average annual temperature of 7.4°C (45°F) and receives about 805 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
7.4°C
Avg Temp
805
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -9° / 16° | 29 mm |
| February | -6° / 21° | 27 mm |
| March | 0° / 32° | 53 mm |
| April | 7° / 45° | 77 mm |
| May | 14° / 57° | 82 mm |
| June | 19° / 67° | 92 mm |
| July | 22° / 71° | 91 mm |
| August | 20° / 69° | 97 mm |
| September | 16° / 60° | 100 mm |
| October | 10° / 49° | 60 mm |
| November | 2° / 35° | 57 mm |
| December | -5° / 22° | 40 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Green Lake County, WI
The most comfortable months to visit Green Lake County, WI are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 28°C high). The coldest is January (near -14°C low). September is usually the wettest month.
Where to stay near Green Lake County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.