Ionia is a city in Chickasaw County, Iowa, home to about 336 people across 0.6 square miles. Its ZIP code is 50645.
Mostly Ionia; also Bassett
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| Nearest major airport | Des Moines International Airport (DSM)120 miles away |
|---|---|
| Closer regional airport | Waterloo Regional Airport (ALO)34 miles away |
| Nearest city of 250,000+ | St. Paul, MN135 miles away |
| Nearest city of 1 million+ | Chicago, IL258 miles away |
Straight-line distances from the center of Ionia; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Ionia had 226 residents in the 2020 census, down 18% since 2000.
It’s the 577th largest of 1,019 towns in Iowa by population.
Chickasaw County grew from 17,037 residents in 1900 to 12,012 in 2020.
Chickasaw County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 81°F in summer, and winter lows average 6°F. About 40.8 inches of rain and melted snow fall in a typical year, with about 39 inches of snow.
Source: NOAA 1991–2020 climate normals, New Hampton, IA weather station (9 miles away).
4,157 jobs at 353 businesses in Chickasaw County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
2 doctors and other health care providers list an office in Ionia.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 1 |
|---|---|
| Physical and occupational therapists | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (1 nearby)
Libraries
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Shares ZIP codes with Bassett.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.