Fond du Lac County | |
|---|---|
Lighthouse at Lake Winnebago, in Fond du Lac | |
Location within the U.S. state of Wisconsin | |
Wisconsin's location within the U.S. | |
| Coordinates: 43°46′N 88°29′W / 43.76°N 88.49°W | |
| Country | |
| State | |
| Founded | 1839 |
| Seat | Fond du Lac |
| Largest city | Fond du Lac |
| Area | |
| • Total | 766 sq mi (1,980 km2) |
| • Land | 720 sq mi (1,900 km2) |
| • Water | 46 sq mi (120 km2) 6.0% |
| Population (2020) | |
| • Total | 104,154 |
| • Density | 145/sq mi (56/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 6th |
| Website | www |
Fond du Lac County is a county in the U.S. state of Wisconsin. As of 2020, 104,154 people lived there. Its county seat is Fond du Lac.
The county name is French for bottom (or foot) of the lake.
| Historical population | |||
|---|---|---|---|
| Census | Pop. | %± | |
| 1840 | 139 | — | |
| 1850 | 14,510 | 10,338.8% | |
| 1860 | 34,154 | 135.4% | |
| 1870 | 46,273 | 35.5% | |
| 1880 | 46,859 | 1.3% | |
| 1890 | 44,088 | −5.9% | |
| 1900 | 47,589 | 7.9% | |
| 1910 | 51,610 | 8.4% | |
| 1920 | 56,119 | 8.7% | |
| 1930 | 59,883 | 6.7% | |
| 1940 | 62,353 | 4.1% | |
| 1950 | 67,829 | 8.8% | |
| 1960 | 75,085 | 10.7% | |
| 1970 | 84,567 | 12.6% | |
| 1980 | 88,964 | 5.2% | |
| 1990 | 90,083 | 1.3% | |
| 2000 | 97,296 | 8.0% | |
| 2010 | 101,633 | 4.5% | |
| 2020 | 104,154 | 2.5% | |
| U.S. Decennial Census 1790–1960 1900–1990 1990–2000 2010–2020 | |||
The county has a total area of 766 square miles (1,983.9 km2). Of this, 723 square miles (1,872.6 km2) is land and 43 square miles (111.4 km2) (5.60%) is water.

