Janesville Town is a town in Rock County, Wisconsin, home to about 3,678 people across 27 square miles. It has no ZIP code of its own: it’s part of 53545 and 53548.
Homes sold for a median of $166 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Janesville; part is in Janesville Town
Mostly Janesville; part is in Janesville Town
Each card is that ZIP code’s whole market, including any part outside Janesville Town. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Janesville Town’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | General Mitchell International Airport (MKE)63 miles away |
|---|---|
| Closer regional airport | Dane County Regional Truax Field (MSN)33 miles away |
| Nearest city of 250,000+ | Madison, WI31 miles away |
| Nearest city of 1 million+ | Chicago, IL94 miles away |
Straight-line distances from the center of Janesville Town; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Janesville Town had 3,665 residents in the 2020 census, down 2% since 2000.
It’s the 250th largest of 1,889 towns in Wisconsin by population.
Rock County grew from 51,203 residents in 1900 to 163,687 in 2020.
Rock County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 12°F. About 37.4 inches of rain and melted snow fall in a typical year, with about 37 inches of snow.
Source: NOAA 1991–2020 climate normals, Afton - Janesville Wwtp, WI weather station (5 miles away).
64,537 jobs at 3,362 businesses in Rock County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
679 doctors and other health care providers list an office in Janesville Town’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 26 |
|---|---|
| Specialist doctors | 149 |
| Dentists | 75 |
| Nurse practitioners and physician assistants | 77 |
| Mental health providers | 208 |
| Physical and occupational therapists | 103 |
| Optometrists | 11 |
| Chiropractors | 30 |
| Pharmacies | 14 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (5 nearby)
Grocery stores
Pharmacies (1 nearby)
Libraries
Museums
Theaters and performance venues
Counts are within about 3.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Janesville School District, Milton School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Adams ElementaryJanesville | Pre-K–5 | 267 | Public | 4.6 mi |
| Jefferson ElementaryJanesville | Pre-K–5 | 293 | Public | 5.2 mi |
| Madison ElementaryJanesville | Pre-K–5 | 307 | Public | 2.9 mi |
| Monroe ElementaryJanesville | Pre-K–5 | 376 | Public | 5.9 mi |
| Preschool 4 JanesvilleJanesville | Pre-K | 345 | Public | 4.6 mi |
| Roosevelt ElementaryJanesville | Pre-K–5 | 412 | Public | 4.9 mi |
| Washington ElementaryJanesville | Pre-K–5 | 410 | Public | 3.2 mi |
| Wilson ElementaryJanesville | Pre-K–5 | 256 | Public | 4.4 mi |
| Youth Services CenterJanesville | Pre-K–12 | 10 | Alternative Education | 4.2 mi |
| ARISE Virtual AcademyJanesville | K–12 | 119 | Charter | 2.8 mi |
| Consolidated ElementaryJanesville | K–3 | 82 | Public | 3.8 mi |
| Franklin MiddleJanesville | 6–8 | 486 | Public | 2.8 mi |
| Marshall MiddleJanesville | 6–8 | 747 | Public | 5.9 mi |
| Craig HighJanesville | 9–12 | 1,400 | Public | 5.3 mi |
| Parker HighJanesville | 9–12 | 1,272 | Public | 2.2 mi |
| Rock River Charter SchoolJanesville | 9–12 | 267 | Charter, Alternative Education | 4.1 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Dr. Kim F. EhrhardtJanesville | Pre-K–5 | 24 | Roman Catholic | 4.2 mi |
| St Matthews Lutheran SchoolJanesville | Pre-K–8 | 55 | Wisconsin Evangelical Lutheran Synod | 4.4 mi |
| St Pauls Lutheran SchoolJanesville | Pre-K–8 | 171 | Lutheran Church–Missouri Synod | 4.9 mi |
| St William Catholic SchoolJanesville | Pre-K–8 | 167 | Roman Catholic | 3.2 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Janesville, Rock Town (Rock County), Fulton, Center Town (Rock County), Plymouth Town (Rock County), Footville and Porter.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.