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/WESTFIELD

Westfield ZIP code, Iowa

The ZIP code for Westfield, IA is 51062, and its area code is 712.

USPS city name
1 ZIP code
Population
123
Area code
712
State
Iowa

NANPA lists no telephone rate centre for Westfield itself, so these are the area codes of the nearest one, Sioux City (6.9 miles). A town on an area-code boundary can differ from its neighbour.

ZIP codes addressed as Westfield

ZIP codes with the USPS city name Westfield
ZIP City Type Population Median income Median home
51062 Westfield , IA Standard 503 — $250,000

Map of Westfield ZIP codes

The ZIP codes of Westfield, 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 Westfield

The nearest larger towns are Akron (1,689 people, 5.5 mi), Elk Point, SD (2,537 people, 6.4 mi) and Jefferson, SD (554 people, 11 mi).

Towns near Westfield
TownPopulationDistance
Elk Point, SD 2,537 6.4 mi
North Sioux City, SD 3,045 16.2 mi
Vermillion, SD 11,878 16.3 mi
Hawarden 2,658 18.0 mi
Dakota Dunes, SD 3,936 19.4 mi
Sioux City 86,101 21.1 mi
Le Mars 10,640 22.0 mi
South Sioux City, NE 13,907 22.6 mi
Dakota City, NE 2,675 25.2 mi
Sergeant Bluff 5,171 28.0 mi

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

Cite this page

zipcodes.pro. “Westfield, IA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ia/westfield

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