Green County, Wisconsin
Green County, Wisconsin, has 37,227 residents (July 2025 estimate). Its county seat is Monroe. It uses Central Time and covers 584 sq mi (1,513 km²) of land.
- Resident population, July 2025
- 37,227
- Land area
- 584 sq mi (1,513 km²)
- County seat or government
- Monroe
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $82,852 ± $2,865
- Median home value
- $250,200 ± $7,955
- Median rent, with utilities
- $867 ± $29
- Homes lived in by their owners
- 75.9% ± 1.7 points
- County type
- County
- Metro or micro area
- Madison, WI metro areaOutlying county
- Water area
- 0.51 sq mi (1.31 km²)
- State
- Wisconsin
- County code (FIPS)
- 55045
- Coordinates (central point)
- 42.675522, -89.605074
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 Green County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Central TimeAmerica/Chicago | UTC-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
- 5356614,901 people
- 5357210,385 people
- 535206,687 people
- 535085,654 people
- 535744,033 people
- 535213,640 people
- 535702,686 people
- 535022,393 people
- 535042,281 people
- 535162,238 people
- 535501,220 people
- 53522943 people
12 ZIP Code areas overlap Green 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 Green County, largest first
- Town of Exeter2,312 people
- Town of Decatur1,839 people
- Town of Monroe1,462 people
- Town of New Glarus1,456 people
- Town of Brooklyn1,223 people
- Town of Clarno1,147 people
- Town of Jefferson1,085 people
- Town of Albany1,055 people
- Town of York1,020 people
- Town of Sylvester1,009 people
- Town of Spring Grove883 people
- Town of Washington881 people
All 16
- Town of Cadiz653 people
- Town of Adams566 people
- Town of Jordan539 people
- Town of Mount Pleasant468 people
People counts are American Community Survey 2020–2024 5-year estimates. All towns in Wisconsin, by county
School districts in Green County, largest first
- Oregon School District24,642 people
- Monroe School District15,433 people
- Brodhead School District6,391 people
- Belleville School District5,617 people
- New Glarus School District4,865 people
- Albany School District2,946 people
- Pecatonica Area School District2,838 people
- Black Hawk School District2,589 people
- Monticello School District2,296 people
- Argyle School District2,090 people
- Juda School District1,318 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.
- Monroe, Wisconsin (city)10,587 people
- Brodhead, Wisconsin (city)3,197 people
- Belleville, Wisconsin (village)2,579 people
- New Glarus, Wisconsin (village)2,172 people
- Brooklyn, Wisconsin (village)1,408 people
- Monticello, Wisconsin (village)1,189 people
- Albany, Wisconsin (village)1,063 people
- Juda, Wisconsin (CDP)390 people
- Browntown, Wisconsin (village)249 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Stephenson County, Illinois23 mi south
- Lafayette County, Wisconsin27 mi west
- Rock County, Wisconsin27 mi east
- Dane County, Wisconsin29 mi north
- Winnebago County, Illinois33 mi southeast
- Iowa County, Wisconsin35 mi northwest
Before using this answer on a form
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