Home > IA > Chickasaw County > Ionia > Zip 50645

Zip Code 50645 — Ionia, IA

50645 is a ZIP Code associated with Ionia, IA, located within Chickasaw. 50645 ranks #4 out of 6 ZIP codes in Chickasaw County by population (and #415 out of 970 in IA). The area supports an estimated population of 1,193 residents across Data Pending housing units, with a population density of 5.4 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (43.021740, -92.449520)

Data MetricLocal Statistic
Postal / Zip Code50645
Primary CityIonia
State / ProvinceIA
CountyChickasaw
Total Population1,193
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density5.4 people/sq mi
TimezoneAmerica/Chicago

How 50645 Compares

MetricZIP 50645Chickasaw CountyIA State Average
Population1,19311,850 (Total)3,210,984 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density5.4 /sq mi----
County Pop Rank#4 of 6----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 50658Nashua6.7 mi2,450N/A
Zip 50659New Hampton7.9 mi5,688N/A
Zip 50616Charles City11.4 mi9,358N/A
Zip 50603Alta Vista11.6 mi555N/A
Zip 50666Plainfield11.6 mi753N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →