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/COLWELL

Colwell ZIP code, Iowa

The ZIP code for Colwell, IA is 50620, and its area code is 641.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
38
Area code
641
State
Iowa

NANPA lists no telephone rate centre for Colwell itself, so these are the area codes of the nearest one, Charles City (6.3 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Colwell uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

ZIP codes addressed as Colwell

ZIP codes with the USPS city name Colwell
ZIP City Type Population Median income Median home
50620 Colwell , IA Standard 36 — $102,800

Other ZIP codes overlapping Colwell

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

ZIP codes overlapping Colwell
ZIP City Type Population Median income Median home
50616 Charles City , IA Standard 9,358 $64,830 $140,600

Map of Colwell ZIP codes

The ZIP codes of Colwell, 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 Colwell

The nearest larger towns are Charles City (7,232 people, 7.6 mi), Bassett (50 people, 7.6 mi) and Floyd (315 people, 7.7 mi).

Towns near Colwell
TownPopulationDistance
Charles City 7,232 7.6 mi
Osage 3,561 14.1 mi
New Hampton 3,453 15.6 mi
Cresco 3,908 28.1 mi

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

Cite this page

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

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