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zipcodes.pro — CITY/IA/IONIA

Ionia ZIP code, Iowa

The ZIP code for Ionia, IA is 50645, and its area code is 641.

USPS city name
1 ZIP code
Population
336
Area code
641
State
Iowa

NANPA lists no telephone rate centre for Ionia itself, so these are the area codes of the nearest one, Nashua (6.8 miles). A town on an area-code boundary can differ from its neighbour.

Ionia in numbers

About 336 people live in Ionia, in 145 households. The median household income is $73,945 a year, about the same as the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $95,700 (54% below the Iowa median), and median gross rent is $533 a month. The median age is 27.9; 9.3% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 16 minutes.

Population336Ionia336
Households145Ionia145
Median age27.9Ionia27.9Iowa38.6US 38.9
Median household income$73,945Ionia$73,945Iowa$75,059US $80,734
Median home value$95,700Ionia$95,700Iowa$208,000US $332,700
Median gross rent$533Ionia$533Iowa$972US $1,413
Bachelor's degree or higher9.3%Ionia9.3%Iowa31.4%US 35.7%
Mean commute16.0 minIonia16.0 minIowa19.8 minUS 26.4 min
Population density596 / sq miIonia596 / sq mi

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

ZIP codes addressed as Ionia

ZIP codes with the USPS city name Ionia
ZIP City Type Population Median income Median home
50645 Ionia , IA Standard 1,193 $64,408 $114,600

Map of Ionia ZIP codes

50645

The ZIP codes of Ionia, 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 Ionia

The nearest larger towns are Nashua (1,622 people, 7.3 mi), New Hampton (3,453 people, 7.4 mi) and Charles City (7,232 people, 11 mi).

Towns near Ionia
TownPopulationDistance
New Hampton 3,453 7.4 mi
Charles City 7,232 11.1 mi
Waverly 10,494 21.7 mi
Osage 3,561 24.6 mi
Cresco 3,908 28.9 mi

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

Cite this page

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

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