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/PLYMOUTH

Plymouth ZIP code, Iowa

The ZIP code for Plymouth, IA is 50464, and its area code is 641.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
407
Area code
641
State
Iowa

Mail addressed to Plymouth 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.

Plymouth in numbers

About 407 people live in Plymouth, in 160 households. The median household income is $80,000 a year, 7% above the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $125,700 (40% below the Iowa median), and median gross rent is $831 a month. The median age is 38.8; 11.2% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 22 minutes.

Population407Plymouth407
Households160Plymouth160
Median age38.8Plymouth38.8Iowa38.6US 38.9
Median household income$80,000Plymouth$80,000Iowa$75,059US $80,734
Median home value$125,700Plymouth$125,700Iowa$208,000US $332,700
Median gross rent$831Plymouth$831Iowa$972US $1,413
Bachelor's degree or higher11.2%Plymouth11.2%Iowa31.4%US 35.7%
Mean commute21.9 minPlymouth21.9 minIowa19.8 minUS 26.4 min
Population density923 / sq miPlymouth923 / sq mi

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

ZIP codes addressed as Plymouth

ZIP codes with the USPS city name Plymouth
ZIP City Type Population Median income Median home
50464 Plymouth , IA Standard 694 $91,750 $197,100

Other ZIP codes overlapping Plymouth

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

ZIP codes overlapping Plymouth
ZIP City Type Population Median income Median home
50401 Mason City , IA Standard 28,703 $66,072 $146,500

Map of Plymouth ZIP codes

50464

The ZIP codes of Plymouth, 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 Plymouth

The nearest larger towns are Manly (1,320 people, 4.9 mi), Mason City (27,050 people, 7.8 mi) and Nora Springs (1,363 people, 9.1 mi).

Towns near Plymouth
TownPopulationDistance
Mason City 27,050 7.8 mi
Clear Lake 7,607 14.8 mi
Osage 3,561 15.9 mi
Forest City 4,290 25.8 mi
Charles City 7,232 25.9 mi
Garner 3,049 26.2 mi

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

Cite this page

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

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