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Where am ILOCATED

St. Croix County, Wisconsin

St. Croix County, Wisconsin, has 98,276 residents (July 2025 estimate). Its county seat is Hudson. It uses Central Time and covers 722 sq mi (1,870 km²) of land.

MilwaukeeMadisonGreen Bay
St. Croix County in Wisconsin
Washington CountyHudsonNew RichmondBaldwinNorth Hudson
St. Croix County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
98,276
Land area
722 sq mi (1,870 km²)
County seat or government
Hudson
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$103,046 ± $3,545
Median home value
$377,700 ± $6,556
Median rent, with utilities
$1,271 ± $78
Homes lived in by their owners
78.3% ± 1.8 points
County type
County
Metro or micro area
Minneapolis-St. Paul-Bloomington, MN-WI metro areaOutlying county
Water area
13 sq mi (33.7 km²)
State
Wisconsin
County code (FIPS)
55109
Coordinates (central point)
45.028959, -92.447284
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 St. Croix 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. 5401633,398 people
  2. 5402224,789 people
  3. 5401720,366 people
  4. 540207,687 people
  5. 540257,612 people
  6. 540026,872 people
  7. 540234,620 people
  8. 540154,086 people
  9. 540133,443 people
  10. 547673,352 people
  11. 540053,264 people
  12. 540282,574 people
All 18
  1. 540262,361 people
  2. 540822,190 people
  3. 547491,410 people
  4. 540071,175 people
  5. 540271,154 people
  6. 54734772 people

18 ZIP Code areas overlap St. Croix 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 St. Croix County, largest first

  1. Town of Hudson8,757 people
  2. Town of Troy5,563 people
  3. Town of Somerset4,405 people
  4. Town of St. Joseph4,292 people
  5. Town of Richmond4,201 people
  6. Town of Star Prairie3,766 people
  7. Town of Hammond2,604 people
  8. Town of Warren1,935 people
  9. Town of Kinnickinnic1,603 people
  10. Town of Eau Galle1,243 people
  11. Town of Baldwin1,216 people
  12. Town of Springfield1,093 people
All 21
  1. Town of Stanton927 people
  2. Town of Cady848 people
  3. Town of Glenwood805 people
  4. Town of Emerald797 people
  5. Town of Erin Prairie718 people
  6. Town of Cylon690 people
  7. Town of Forest638 people
  8. Town of Pleasant Valley561 people
  9. Town of Rush River523 people

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

School districts in St. Croix County, largest first

  1. Hudson School District32,779 people
  2. Menomonie Area School District27,795 people
  3. River Falls School District26,244 people
  4. New Richmond School District20,671 people
  5. Osceola School District10,023 people
  6. Amery School District9,826 people
  7. Baldwin-Woodville Area School District9,433 people
  8. Somerset School District8,923 people
  9. St. Croix Central School District8,651 people
  10. Spring Valley School District4,538 people
  11. Boyceville Community School District4,478 people
  12. Glenwood City School District3,982 people
All 13
  1. Clear Lake School District3,431 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. River Falls, Wisconsin (city)16,719 people
  2. Hudson, Wisconsin (city)14,959 people
  3. New Richmond, Wisconsin (city)10,539 people
  4. Baldwin, Wisconsin (village)4,342 people
  5. North Hudson, Wisconsin (village)3,819 people
  6. Somerset, Wisconsin (village)3,208 people
  7. Hammond, Wisconsin (village)1,960 people
  8. Roberts, Wisconsin (village)1,858 people
  9. Woodville, Wisconsin (village)1,424 people
  10. Spring Valley, Wisconsin (village)1,290 people
  11. Glenwood City, Wisconsin (city)1,260 people
  12. Star Prairie, Wisconsin (village)674 people
All 16
  1. Houlton, Wisconsin (CDP)240 people
  2. Deer Park, Wisconsin (village)223 people
  3. Wilson, Wisconsin (village)200 people
  4. Emerald, Wisconsin (CDP)191 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Pierce County, Wisconsin21 mi south
  2. Washington County, Minnesota22 mi west
  3. Dunn County, Wisconsin27 mi east
  4. Polk County, Wisconsin30 mi north
  5. Barron County, Wisconsin40 mi northeast

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.