Rock Town (Rock County) is a town in Rock County, Wisconsin, home to about 2,986 people across 27 square miles. Its ZIP code is 53501, and parts of 53511, 53546 and 53548 are in Rock Town (Rock County) too.
Homes sold for a median of $164 per square foot across 3 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
All in Rock Town (Rock County)
Mostly Beloit City; part is in Rock Town (Rock County)
Mostly Janesville; part is in Rock Town (Rock County)
Mostly Janesville; part is in Rock Town (Rock County)
Each card is that ZIP code’s whole market, including any part outside Rock Town (Rock County). Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Rock Town (Rock County)’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)64 miles away |
|---|---|
| Closer regional airport | Chicago Rockford International Airport (RFD)31 miles away |
| Nearest city of 250,000+ | Madison, WI35 miles away |
| Nearest city of 1 million+ | Chicago, IL91 miles away |
Straight-line distances from the center of Rock Town (Rock County); 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.
Rock Town (Rock County) had 2,981 residents in the 2020 census, down 11% since 2000.
It’s the 318th 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 (about a mile 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).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Parks (16 nearby)
Grocery stores
Pharmacies (2 nearby)
Libraries (1 nearby)
Museums
Theaters and performance venues (2 nearby)
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.
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Shares ZIP codes with Beloit City, Janesville, Beloit Town, Janesville Town, Turtle, Newark, Harmony Town (Rock County), La Prairie, Center Town (Rock County), Plymouth Town (Rock County), Footville, Bradford, Johnstown Town (Rock County) 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.