Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/MN/JANESVILLE

Janesville ZIP code, Minnesota

The ZIP code for Janesville, MN is 56048, and its area code is 507.

USPS city name
1 ZIP code
Population
2,378
Area code
507

Janesville in numbers

About 2,378 people live in Janesville, in 932 households. The median household income is $74,643 a year, 16% below the Minnesota median of $89,062 (US: $80,734). The median owner-occupied home is valued at $206,800 (37% below the Minnesota median), and median gross rent is $873 a month. The median age is 39.6; 21.8% of adults 25 and over hold a bachelor's degree or higher (39.4% across Minnesota); the average commute takes 22 minutes.

Population2,378Janesville2,378
Households932Janesville932
Median age39.6Janesville39.6Minnesota38.8US 38.9
Median household income$74,643Janesville$74,643Minnesota$89,062US $80,734
Median home value$206,800Janesville$206,800Minnesota$329,300US $332,700
Median gross rent$873Janesville$873Minnesota$1,280US $1,413
Bachelor's degree or higher21.8%Janesville21.8%Minnesota39.4%US 35.7%
Mean commute21.6 minJanesville21.6 minMinnesota22.7 minUS 26.4 min
Population density1,547 / sq miJanesville1,547 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Janesville city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Janesville

ZIP codes with the USPS city name Janesville
ZIP City Type Population Median income Median home
56048 Janesville , MN Standard 4,025 $85,532 $238,600

Map of Janesville ZIP codes

56048

The ZIP codes of Janesville, MN, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Janesville

The nearest larger towns are Eagle Lake (3,281 people, 9.1 mi), Waseca (9,164 people, 11 mi) and Mankato (45,473 people, 14 mi).

Towns near Janesville
TownPopulationDistance
Eagle Lake 3,281 9.1 mi
Waseca 9,164 10.5 mi
Mankato 45,473 13.7 mi
North Mankato 14,211 17.0 mi
Le Center 2,513 18.5 mi
St. Peter 12,185 19.3 mi
Montgomery 3,434 23.4 mi
Owatonna 26,498 23.8 mi
Faribault 24,631 24.7 mi
Lake Crystal 2,606 25.3 mi
Le Sueur 4,215 26.0 mi
Lonsdale 4,896 28.5 mi

More nearby: every ZIP code in Waseca County · Minnesota ZIP codes

Cite this page

zipcodes.pro. “Janesville, MN ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/mn/janesville

Underlying data is public domain or openly licensed — sources, vintages and licences.