County · Wisconsin
Green Lake County, Wisconsin
Green Lake County, Wisconsin. Green Lake County had 19,305 residents in 2025 by the Census Bureau's estimate, up 1.5% since 2020, in line with Wisconsin (+1.3%). It holds 17 places (6 cities, villages and boroughs, 10 towns and townships and 1 census-designated) and 6 census tracts. GEOID 55047.
Residents, July 2025 estimate
19,305
Census Bureau estimate (no margin published)
2020 Census count: 19,018 · ACS 2020-2024: 19,263
Median household income
$68,196
±$3,762 (90% margin)
Wisconsin: $77,485
Median home value
$215,400
±$9,379 (90% margin)
Wisconsin: $266,500
Median gross rent
$818
±$70 (90% margin)
Wisconsin: $1,087
How many people live in Green Lake County, and is it growing?
The 2020 Census counted 19,018 residents in Green Lake County. The Census Bureau estimates 19,305 for July 1, 2025, up 1.5% since 2020, in line with Wisconsin (+1.3%). The 2020-2024 American Community Survey puts the population at 19,263 over 350 square miles of land.
| Measure | Green Lake County | Wisconsin | Change since 2015-2019 |
|---|---|---|---|
| Total population | 19,263 | 5,914,872 | +508 |
| Households | 8,285±195 | 2,479,480 | +306 |
| Average household size | 2.28±0.05 | 2.33 | no clear change |
| Housing units | 10,772±40 | 2,778,572 | no clear change |
Green Lake County's population since 2000
From 19,105 in 2000 to 19,305 in 2025: up 1.0%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Green Lake County?
Green Lake County holds 17 places: 6 cities, villages and boroughs (incorporated places), 10 towns and townships (county subdivisions with their own government) and 1 census-designated place. The largest is Berlin with 5,588 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Berlin | 5,571 | $59,472 |
|---|---|---|
| Brooklyn (town), Green Lake County | 1,787 | $108,167 |
| Princeton (town) | 1,519 | $83,631 |
| Markesan | 1,377 | $62,165 |
| Princeton | 1,267 | $54,205 |
| Green Lake (town) | 1,169 | $82,386 |
| Kingston (town), Green Lake County | 1,079 | $82,813 |
| Berlin (town), Green Lake County | 1,068 | $113,125 |
| Manchester (town), Green Lake County | 1,057 | $78,438 |
| Green Lake | 1,001 | $55,970 |
| Marquette (town) | 523 | $78,125 |
| Mackford (town) | 495 | $91,429 |
| Seneca (town), Green Lake County | 387 | $51,964 |
| St. Marie (town) | 352 | $56,875 |
| KingstonGEOID 5539750 | 281 | $72,083 |
| DaltonGEOID 5518625 | 215 | $59,464 |
| MarquetteGEOID 5549500 | 172 | $58,750 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Green Lake County?
The median resident of Green Lake County is 45.6 years old; 21.7% are under 18 and 23.5% are 65 or older. The largest group is non-Hispanic white residents at 90.5%, then Hispanic or Latino residents (of any race) at 5.6%. 1.9% of residents were born outside the United States.
| Measure | Green Lake County | Wisconsin | Change since 2015-2019 |
|---|---|---|---|
| Median age | 45.6±0.4 | 40.2 | no clear change |
| Under 18 years | 21.7%±0.1 pts | 21.4% | – |
| 65 years and over | 23.5%±0.2 pts | 18.5% | – |
| Hispanic or Latino (any race) | 5.6% | 8.0% | +0.7 pts |
| White alone, not Hispanic | 90.5%±0.2 pts | 78.6% | −1.8 pts |
| Black or African American alone, not Hispanic | 0.5%±0.2 pts | 5.9% | no clear change |
| Asian alone, not Hispanic | 1.1%±0.4 pts | 2.9% | no clear change |
| American Indian and Alaska Native alone, not Hispanic | 0.3%±0.1 pts | 0.5% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.1%±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.6%±0.4 pts | 3.7% | – |
| Some other race alone, not Hispanic | 0.2%±0.1 pts | 0.3% | – |
| Born outside the United States | 1.9%±0.5 pts | 5.2% | −1.0 pts |
| Speak a language other than English at home (age 5+) | 8.7%±1.4 pts | 9.0% | – |
| Civilian veterans (age 18+) | 7.4%±0.9 pts | 6.2% | – |
| With a disability | 15.6%±1.5 pts | 12.3% | – |
| No health insurance coverage | 9.0%±1.3 pts | 5.2% | no clear change |
| High school graduate or higher (age 25+) | 91.4%±1.3 pts | 93.6% | – |
| Bachelor's degree or higher (age 25+) | 22.8%±1.8 pts | 33.4% | +2.6 pts |
| Graduate or professional degree (age 25+) | 7.9%±1.1 pts | 11.4% | – |
| Moved from another state in the past year | 0.6%±0.2 pts | 2.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Green Lake County earn?
Half of Green Lake County's 8,285 households earn less than $68,196 a year (±$3,762), against $77,485 in Wisconsin. In 2015-2019 it was $67,780 in 2024 dollars; the margins of error cannot tell the two periods apart. 13.8% of residents live below the poverty line.
| Measure | Green Lake County | Wisconsin | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $68,196±$3,762 | $77,485 | no clear change |
| Mean household income | $91,125±$4,584 | $101,466 | – |
| Per capita income | $39,565±$1,959 | $43,373 | +$3,620 |
| People below the poverty line | 13.8%±2.2 pts | 10.6% | no clear change |
| Children under 18 below the poverty line | 20.0%±5.3 pts | 12.8% | no clear change |
| Households receiving SNAP | 11.7%±1.8 pts | 11.1% | – |
| Households with a broadband subscription | 84.1%±1.8 pts | 90.3% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Green Lake County?
Owners occupy 74.5% of Green Lake County's occupied homes and renters 25.5%. The median owner-occupied home is valued at $215,400 by its owner (±$9,379). The median renter pays $818 a month including utilities, and 33.9% of renters pay 35% or more of their income on rent.
| Measure | Green Lake County | Wisconsin | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $215,400±$9,379 | $266,500 | +$34,980 |
| Median gross rent | $818±$70 | $1,087 | no clear change |
| Renters paying 35% or more of income on rent | 33.9%±7.0 pts | 35.0% | no clear change |
| Median monthly owner costs, with a mortgage | $1,410±$49 | $1,689 | – |
| Owner-occupied homes | 74.5%±2.2 pts | 67.8% | no clear change |
| Housing units | 10,772±40 | 2,778,572 | no clear change |
| Homeowner vacancy rate | 1.0%±0.7 pts | 0.5% | – |
| Rental vacancy rate | 7.3%±4.2 pts | 4.5% | – |
| Single-family detached homes | 79.8%±1.8 pts | 66.2% | – |
| Mobile homes | 3.8%±0.7 pts | 3.1% | – |
| Built 2020 or later | 0.6%±0.4 pts | 1.4% | – |
| Built 1939 or earlier | 23.9%±1.9 pts | 17.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Green Lake County building?
Builders took permits for 107 new housing units across Green Lake County in 2025 (55 single-family), 5.5 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Green Lake County get to work?
75.4% of Green Lake County's workers drive alone and 11.0% work from home. The average trip to work takes 24.7 minutes. The unemployment rate in 2020-2024 averaged 2.8%.
| Measure | Green Lake County | Wisconsin | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 58.4%±1.7 pts | 65.3% | – |
| Unemployment rate | 2.8%±0.7 pts | 3.2% | no clear change |
| Drove alone to work | 75.4%±1.9 pts | 74.4% | – |
| Carpooled | 7.4%±1.1 pts | 7.3% | – |
| Public transportation | 0.4%±0.3 pts | 1.1% | – |
| Walked | 4.0%±1.2 pts | 2.6% | – |
| Worked from home | 11.0%±1.5 pts | 13.1% | +4.2 pts |
| Mean travel time to work | 24.7 min±1.0 | 22.2 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Green Lake County's census tracts?
Green Lake County is divided into 6 census tracts. Among those with a reliable estimate, median household income runs from $62,411 (Tract 1001) to $84,028 (Tract 1004).
| Tract 100155047100100 | 3,577±286 | $62,411 |
|---|---|---|
| Tract 100255047100200 | 2,880±239 | $65,804 |
| Tract 100355047100300 | 2,965±217 | $63,359 |
| Tract 100455047100400 | 2,887±211 | $84,028 |
| Tract 100555047100500 | 3,157±246 | $82,560 |
| Tract 100655047100600 | 3,797±193 | $72,011 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Green Lake County compare with Wisconsin's other counties?
| Measure | Rank |
|---|---|
| Population | 55th of 72 |
| Growth 2020-2025 | 33rd of 72 |
| Residents per square mile | 33rd of 72 |
| Median household income | 46th of 72 |
| Median home value | 43rd of 72 |
| Median gross rent | 51st of 72 |
| Poverty rate | 7th of 72 |
| Bachelor's degree or higher | 43rd of 72 |
| Median age | 26th of 72 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Green Lake County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.