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/THORNTON

Thornton ZIP code, Iowa

The ZIP code for Thornton, IA is 50479, and its area code is 641.

USPS city name
1 ZIP code
Population
514
Area code
641
State
Iowa

Thornton in numbers

About 514 people live in Thornton, in 231 households. The median household income is $67,031 a year, 11% below the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $115,500 (44% below the Iowa median), and median gross rent is $839 a month. The median age is 34.5; 17.2% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 25 minutes.

Population514Thornton514
Households231Thornton231
Median age34.5Thornton34.5Iowa38.6US 38.9
Median household income$67,031Thornton$67,031Iowa$75,059US $80,734
Median home value$115,500Thornton$115,500Iowa$208,000US $332,700
Median gross rent$839Thornton$839Iowa$972US $1,413
Bachelor's degree or higher17.2%Thornton17.2%Iowa31.4%US 35.7%
Mean commute25.2 minThornton25.2 minIowa19.8 minUS 26.4 min
Population density413 / sq miThornton413 / sq mi

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

ZIP codes addressed as Thornton

ZIP codes with the USPS city name Thornton
ZIP City Type Population Median income Median home
50479 Thornton , IA Standard 655 $68,750 $121,100

Map of Thornton ZIP codes

50479

The ZIP codes of Thornton, 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 Thornton

The nearest larger towns are Sheffield (1,053 people, 9.9 mi), Rockwell (986 people, 10 mi) and Klemme (544 people, 12 mi).

Towns near Thornton
TownPopulationDistance
Belmond 2,694 13.1 mi
Clear Lake 7,607 13.2 mi
Garner 3,049 15.3 mi
Hampton 4,306 16.7 mi
Mason City 27,050 16.9 mi
Clarion 2,770 22.7 mi
Forest City 4,290 25.0 mi

More nearby: every ZIP code in Cerro Gordo County · Iowa ZIP codes

Cite this page

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

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