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/CA/JANESVILLE

Janesville ZIP code, California

The ZIP code for Janesville, CA is 96114, and its area code is 530.

USPS city name
1 ZIP code
Population
2,399
Area code
530

Janesville in numbers

About 2,399 people live in Janesville, in 942 households. The median household income is $78,466 a year, 21% below the California median of $99,122 (US: $80,734). The median owner-occupied home is valued at $326,900 (56% below the California median), and median gross rent is $1,374 a month. The median age is 52.4; 10.1% of adults 25 and over hold a bachelor's degree or higher (37.1% across California); the average commute takes 25 minutes.

Population2,399Janesville2,399
Households942Janesville942
Median age52.4Janesville52.4California37.9US 38.9
Median household income$78,466Janesville$78,466California$99,122US $80,734
Median home value$326,900Janesville$326,900California$734,700US $332,700
Median gross rent$1,374Janesville$1,374California$2,036US $1,413
Bachelor's degree or higher10.1%Janesville10.1%California37.1%US 35.7%
Mean commute25.2 minJanesville25.2 minCalifornia28.7 minUS 26.4 min
Population density71 / sq miJanesville71 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Janesville CDP. 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
96114 Janesville , CA Standard 2,959 $79,688 $338,600

Map of Janesville ZIP codes

96114

The ZIP codes of Janesville, CA, 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 Susanville (14,177 people, 12 mi), Portola (2,441 people, 33 mi) and East Quincy (2,723 people, 35 mi).

Towns near Janesville
TownPopulationDistance
Susanville 14,177 11.7 mi

More nearby: every ZIP code in Lassen County · California ZIP codes

Cite this page

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

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