Grant County | |
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![]() Grant County Courthouse, Armand D. Koch, architect, 1902 | |
![]() Location within the U.S. state of Wisconsin | |
![]() Wisconsin's location within the U.S. | |
Coordinates: 42°52′N 90°43′W / 42.86°N 90.71°W | |
Country | ![]() |
State | ![]() |
Founded | 1837 |
Seat | Lancaster |
Largest city | Platteville |
Area | |
• Total | 1,183 sq mi (3,060 km2) |
• Land | 1,147 sq mi (2,970 km2) |
• Water | 36 sq mi (90 km2) 3.1% |
Population | |
• Total | 51,938 |
• Density | 45.3/sq mi (17.5/km2) |
Time zone | UTC−6 (Central) |
• Summer (DST) | UTC−5 (CDT) |
Congressional district | 3rd |
Website | www |
Grant County is a county in the U.S. state of Wisconsin. In 2020, 51,938 people lived there.[1] Its county seat is Lancaster.[2] Grant County also is in the tri-state area with Illinois, Iowa, and Wisconsin.
Historical population | |||
---|---|---|---|
Census | Pop. | %± | |
1840 | 3,926 | — | |
1850 | 16,169 | 311.8% | |
1860 | 31,189 | 92.9% | |
1870 | 37,979 | 21.8% | |
1880 | 37,852 | −0.3% | |
1890 | 36,651 | −3.2% | |
1900 | 38,881 | 6.1% | |
1910 | 39,007 | 0.3% | |
1920 | 39,044 | 0.1% | |
1930 | 38,469 | −1.5% | |
1940 | 40,639 | 5.6% | |
1950 | 41,460 | 2.0% | |
1960 | 44,419 | 7.1% | |
1970 | 48,398 | 9.0% | |
1980 | 51,736 | 6.9% | |
1990 | 49,264 | −4.8% | |
2000 | 49,597 | 0.7% | |
2010 | 51,208 | 3.2% | |
2020 | 51,938 | 1.4% | |
U.S. Decennial Census[3] 1790–1960[4] 1900–1990[5] 1990–2000[6] 2010–2020[1] |