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/GREENHORN

Greenhorn ZIP codes, California

No ZIP code is named for Greenhorn, CA; addresses there use a neighbouring town's name. The ZIP code covering it is 95971. Its area code is 530.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
243
Area code
530

NANPA lists no telephone rate centre for Greenhorn itself, so these are the area codes of the nearest one, Keddie (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Greenhorn in numbers

About 243 people live in Greenhorn, in 138 households. The median household income is $71,538 a year, 28% below the California median of $99,122 (US: $80,734). The median owner-occupied home is valued at $276,400 (62% below the California median). The median age is 64.6; 0.0% of adults 25 and over hold a bachelor's degree or higher (37.1% across California); the average commute takes 18 minutes.

Population243Greenhorn243
Households138Greenhorn138
Median age64.6Greenhorn64.6California37.9US 38.9
Median household income$71,538Greenhorn$71,538California$99,122US $80,734
Median home value$276,400Greenhorn$276,400California$734,700US $332,700
Bachelor's degree or higher0.0%Greenhorn0.0%California37.1%US 35.7%
Mean commute18.0 minGreenhorn18.0 minCalifornia28.7 minUS 26.4 min
Population density36 / sq miGreenhorn36 / sq mi

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

ZIP codes covering Greenhorn

These ZIP codes cover part of Greenhorn but are addressed as somewhere else.

ZIP codes overlapping Greenhorn
ZIP City Type Population Median income Median home
95971 Quincy , CA Standard 6,419 $83,269 $327,100

Map of Greenhorn ZIP codes

95971

The ZIP codes of Greenhorn, 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 Greenhorn

The nearest larger towns are East Quincy (2,723 people, 8.5 mi), Plumas Eureka (372 people, 8.8 mi) and Quincy (1,317 people, 11 mi).

Towns near Greenhorn
TownPopulationDistance
East Quincy 2,723 8.5 mi

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

Cite this page

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

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