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/IA/CALIFORNIA-JUNCTION

California Junction ZIP codes, Iowa

No ZIP code is named for California Junction, IA; addresses there use a neighbouring town's name. The ZIP code covering it is 51555. Its area code is 712.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
169
Area code
712
State
Iowa

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

ZIP codes covering California Junction

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

ZIP codes overlapping California Junction
ZIP City Type Population Median income Median home
51555 Missouri Valley , IA Standard 4,952 $85,273 $188,700

Map of California Junction ZIP codes

51555

The ZIP codes of California Junction, IA, 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 California Junction

The nearest larger towns are Modale (181 people, 4.1 mi), Missouri Valley (2,666 people, 4.8 mi) and Fort Calhoun, NE (1,173 people, 7.4 mi).

Towns near California Junction
TownPopulationDistance
Missouri Valley 2,666 4.8 mi
Blair, NE 7,914 7.4 mi
Carter Lake 3,767 19.2 mi
Omaha, NE 488,837 20.8 mi
Council Bluffs 62,586 23.6 mi
Ralston, NE 6,472 25.0 mi
Valley, NE 3,174 25.4 mi
La Vista, NE 16,563 26.4 mi
Fremont, NE 27,567 26.8 mi
Chalco, NE 10,595 27.1 mi
Bellevue, NE 64,510 28.8 mi
Papillion, NE 25,244 29.1 mi

More nearby: every ZIP code in Harrison County · Iowa ZIP codes

Cite this page

zipcodes.pro. “California Junction, IA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ia/california-junction

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