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Where am ILOCATED

Fond du Lac County, Wisconsin

Fond du Lac County, Wisconsin, has 104,669 residents (July 2025 estimate). Its county seat is Fond du Lac. It uses Central Time and covers 720 sq mi (1,864 km²) of land.

MilwaukeeMadisonGreen Bay
Fond du Lac County in Wisconsin
Green Lake CountyFond du LacWaupunRiponNorth Fond du Lac
Fond du Lac County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
104,669
Land area
720 sq mi (1,864 km²)
County seat or government
Fond du Lac
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$74,275 ± $2,612
Median home value
$222,800 ± $5,121
Median rent, with utilities
$960 ± $28
Homes lived in by their owners
70.7% ± 1.4 points
County type
County
Metro or micro area
Fond du Lac, WI metro areaCentral county
Water area
46.3 sq mi (120 km²)
State
Wisconsin
County code (FIPS)
55039
Coordinates (central point)
43.754722, -88.493284
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Fond du Lac County

Time zoneLocal time and UTC offsetNext clock change
Central TimeAmerica/ChicagoUTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 5493541,613 people
  2. 5490422,273 people
  3. 5493721,687 people
  4. 5396313,952 people
  5. 5497110,907 people
  6. 530408,630 people
  7. 530147,898 people
  8. 530107,444 people
  9. 530615,144 people
  10. 539464,333 people
  11. 530483,420 people
  12. 530652,351 people
All 24
  1. 530492,298 people
  2. 539192,292 people
  3. 530112,176 people
  4. 549792,037 people
  5. 530061,905 people
  6. 530571,882 people
  7. 530191,876 people
  8. 530791,420 people
  9. 549741,415 people
  10. 549321,218 people
  11. 54964974 people
  12. 53931350 people

24 ZIP Code areas overlap Fond du Lac County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Towns in Fond du Lac County, largest first

  1. Town of Taycheedah4,609 people
  2. Town of Fond du Lac3,713 people
  3. Town of Friendship2,763 people
  4. Town of Empire2,751 people
  5. Town of Auburn2,292 people
  6. Town of Osceola1,820 people
  7. Town of Byron1,759 people
  8. Town of Ashford1,744 people
  9. Town of Lamartine1,681 people
  10. Town of Eldorado1,436 people
  11. Town of Ripon1,370 people
  12. Town of Waupun1,318 people
All 21
  1. Town of Forest1,295 people
  2. Town of Calumet1,261 people
  3. Town of Eden1,109 people
  4. Town of Alto1,064 people
  5. Town of Marshfield1,055 people
  6. Town of Springvale824 people
  7. Town of Rosendale696 people
  8. Town of Oakfield675 people
  9. Town of Metomen599 people

People counts are American Community Survey 2020–2024 5-year estimates. All towns in Wisconsin, by county

School districts in Fond du Lac County, largest first

  1. Fond du Lac School District54,259 people
  2. Waupun School District19,198 people
  3. Kewaskum School District13,734 people
  4. Ripon Area School District10,762 people
  5. Campbellsport School District10,502 people
  6. New Holstein School District9,423 people
  7. North Fond du Lac School District8,997 people
  8. Lomira School District7,054 people
  9. Markesan School District6,622 people
  10. Rosendale-Brandon School District5,289 people
  11. Oakfield School District3,385 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Fond du Lac, Wisconsin (city)44,494 people
  2. Waupun, Wisconsin (city)11,174 people
  3. Ripon, Wisconsin (city)7,772 people
  4. North Fond du Lac, Wisconsin (village)5,392 people
  5. Kewaskum, Wisconsin (village)4,461 people
  6. Campbellsport, Wisconsin (village)1,973 people
  7. St. Peter, Wisconsin (CDP)1,413 people
  8. Oakfield, Wisconsin (village)1,182 people
  9. Brandon, Wisconsin (village)913 people
  10. Rosendale, Wisconsin (village)853 people
  11. Taycheedah, Wisconsin (CDP)801 people
  12. Van Dyne, Wisconsin (CDP)752 people
All 17
  1. Eden, Wisconsin (village)732 people
  2. Mount Calvary, Wisconsin (village)642 people
  3. St. Cloud, Wisconsin (village)454 people
  4. Fairwater, Wisconsin (village)350 people
  5. Alto, Wisconsin (CDP)122 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Green Lake County, Wisconsin24 mi west
  2. Winnebago County, Wisconsin24 mi north
  3. Dodge County, Wisconsin25 mi southwest
  4. Calumet County, Wisconsin26 mi northeast
  5. Washington County, Wisconsin28 mi southeast
  6. Sheboygan County, Wisconsin38 mi east

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.