Porter is a town in Rock County, Wisconsin, home to about 961 people across 36 square miles. It has no ZIP code of its own: it’s part of 53534, 53536 and 53548.
Homes sold for a median of $209 per square foot across 3 ZIP codes in the three months ending August 2026, and 2 of 3 were seller’s markets.
Mostly Edgerton; part is in Porter
Mostly Evansville; part is in Porter
Mostly Janesville; part is in Porter
Each card is that ZIP code’s whole market, including any part outside Porter. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Porter’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Porter well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | General Mitchell International Airport (MKE)65 miles away |
|---|---|
| Closer regional airport | Dane County Regional Truax Field (MSN)26 miles away |
| Nearest city of 250,000+ | Madison, WI24 miles away |
| Nearest city of 1 million+ | Chicago, IL100 miles away |
Straight-line distances from the center of Porter; 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.
Porter had 969 residents in the 2020 census, up 5% since 2000.
It’s the 938th 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 10°F. About 37.8 inches of rain and melted snow fall in a typical year, with about 36 inches of snow.
Source: NOAA 1991–2020 climate normals, Stoughton, WI weather station (9 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).
568 doctors and other health care providers list an office in Porter’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 34 |
|---|---|
| Specialist doctors | 141 |
| Dentists | 22 |
| Nurse practitioners and physician assistants | 89 |
| Mental health providers | 134 |
| Physical and occupational therapists | 118 |
| Optometrists | 7 |
| Chiropractors | 23 |
| Pharmacies | 12 |
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 (2 nearby)
Grocery stores
Pharmacies
Libraries
Museums
Theaters and performance venues (1 nearby)
Counts are within about 4 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 Edgerton School District, Evansville Community School District, Janesville School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Edgerton Community ElementaryEdgerton | Pre-K–5 | 809 | Public | 6.2 mi |
| Levi Leonard ElementaryEvansville | Pre-K–2 | 424 | Public | 7.0 mi |
| Madison ElementaryJanesville | Pre-K–5 | 307 | Public | 9.6 mi |
| Preschool 4 JanesvilleJanesville | Pre-K | 345 | Public | 11.0 mi |
| Washington ElementaryJanesville | Pre-K–5 | 410 | Public | 9.4 mi |
| Wilson ElementaryJanesville | Pre-K–5 | 256 | Public | 11.0 mi |
| ARISE Virtual AcademyJanesville | K–12 | 119 | Charter | 9.4 mi |
| Yahara ElementaryEdgerton | K–5 | 120 | Public | 0.9 mi |
| Theodore Robinson Intermediate SchoolEvansville | 3–5 | 339 | Public | 7.1 mi |
| Edgerton MiddleEdgerton | 6–8 | 413 | Public | 6.0 mi |
| Franklin MiddleJanesville | 6–8 | 486 | Public | 9.4 mi |
| J C McKenna MiddleEvansville | 6–8 | 362 | Public | 6.8 mi |
| Edgerton HighEdgerton | 9–12 | 593 | Public | 6.1 mi |
| Evansville HighEvansville | 9–12 | 497 | Public | 7.3 mi |
| Parker HighJanesville | 9–12 | 1,272 | Public | 9.0 mi |
| Rock River Charter SchoolJanesville | 9–12 | 267 | Charter, Alternative Education | 10.5 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| St William Catholic SchoolJanesville | Pre-K–8 | 167 | Roman Catholic | 9.7 mi |
| Oaklawn AcademyEdgerton | 6–9 | 87 | Roman Catholic | 9.4 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, Edgerton, Evansville, Fulton, Janesville Town, Union Town (Rock County), Albion Town (Dane County), Rock Town (Rock County), Center Town (Rock County), Magnolia, Plymouth Town (Rock County), Dunkirk, Sumner Town (Jefferson County), Footville and Edgerton City.
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.