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| Green Lake County, Wisconsin | |
| Map | |
 Location in the state of Wisconsin |
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 Wisconsin's location in the U.S. |
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| Statistics | |
| Founded | 1858 |
|---|---|
| Seat | Green Lake |
| Largest City | Berlin |
| Area - Total - Land - Water |
380 sq mi (984 km²) 349 sq mi (904 km²) 31 sq mi (80 km²), 8.1% |
| Population - (2010) - Density |
19,051 55/sq mi (21/km²) |
| Time zone | Central: UTC-6/-5 |
| Website: www.co.green-lake.wi.us | |
| Named for: Green Lake | |
Green Lake County is a county located in the U.S. state of Wisconsin. As of the 2010 census, the population was 19,051. Its county seat is Green Lake.
In 2010, the center of population of Wisconsin was located in Green Lake County, near the city of Markesan.
According to the U.S. Census Bureau, the county has a total area of 380 square miles (980 km2), of which 349 square miles (900 km2) is land and 31 square miles (80 km2) (8.1%) is water. It is the third-smallest county in Wisconsin by total area.
Highway 23 (Wisconsin)
Highway 44 (Wisconsin)
Highway 49 (Wisconsin)
Highway 73 (Wisconsin)
Highway 91 (Wisconsin)| Historical population | |||
|---|---|---|---|
| Census | Pop. | %± | |
| 1860 | 12,663 | — | |
| 1870 | 13,195 | 4.2% | |
| 1880 | 14,483 | 9.8% | |
| 1890 | 15,163 | 4.7% | |
| 1900 | 15,797 | 4.2% | |
| 1910 | 15,491 | −1.9% | |
| 1920 | 14,875 | −4.0% | |
| 1930 | 13,913 | −6.5% | |
| 1940 | 14,092 | 1.3% | |
| 1950 | 14,749 | 4.7% | |
| 1960 | 15,418 | 4.5% | |
| 1970 | 16,878 | 9.5% | |
| 1980 | 18,370 | 8.8% | |
| 1990 | 18,651 | 1.5% | |
| 2000 | 19,105 | 2.4% | |
| 2010 | 19,051 | −0.3% | |
| Est. 2015 | 18,856 | −1.0% | |
| U.S. Decennial Census 1790–1960 1900–1990 1990–2000 2010–2014 |
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As of the census of 2000, there were 19,105 people, 7,703 households, and 5,322 families residing in the county. The population density was 54 people per square mile (21/km²). There were 9,831 housing units at an average density of 28 per square mile (11/km²). The racial makeup of the county was 97.81% White, 0.15% Black or African American, 0.20% Native American, 0.31% Asian, 0.04% Pacific Islander, 0.89% from other races, and 0.60% from two or more races. 2.06% of the population were Hispanic or Latino of any race. 51.8% were of German, 10.6% Polish, 5.8% Irish and 5.8% American ancestry according to Census 2000. 94.2% spoke English, 3.0% Spanish and 1.8% German as their first language.
There were 7,703 households out of which 29.40% had children under the age of 18 living with them, 58.50% were married couples living together, 6.90% had a female householder with no husband present, and 30.90% were non-families. 27.00% of all households were made up of individuals and 13.80% had someone living alone who was 65 years of age or older. The average household size was 2.43 and the average family size was 2.96.
In the county, the population was spread out with 24.20% under the age of 18, 6.60% from 18 to 24, 26.20% from 25 to 44, 24.20% from 45 to 64, and 18.80% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 97.00 males. For every 100 females age 18 and over, there were 95.20 males.
