Castleton is a township in Barry County, Michigan, home to about 3,399 people across 35 square miles. Its ZIP code is 49073, and parts of 48897 are in Castleton too.
Homes sold for a median of $129 per square foot in the three months ending August 2026, a seller’s market.
Mostly Castleton; also Maple Grove Township (Barry County) and Kalamo
Mostly Woodland; part is in Castleton
Each card is that ZIP code’s whole market, including any part outside Castleton. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Castleton’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Gerald R. Ford International Airport (GRR)27 miles away |
|---|---|
| Nearest city of 250,000+ | Toledo, OH103 miles away |
| Nearest city of 1 million+ | Chicago, IL142 miles away |
Straight-line distances from the center of Castleton; 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.
Castleton had 3,329 residents in the 2020 census, down 4% since 2000.
It’s the 524th largest of 1,531 towns in Michigan by population.
Barry County grew from 22,514 residents in 1900 to 62,423 in 2020.
Barry County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 82°F in summer, and winter lows average 16°F. About 39.5 inches of rain and melted snow fall in a typical year, with about 68 inches of snow.
Source: NOAA 1991–2020 climate normals, Hastings, MI weather station (8 miles away).
11,546 jobs at 965 businesses in Barry County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
4 doctors and other health care providers list an office in Castleton.
Nearest hospitals
Providers with an office here
| Dentists | 1 |
|---|---|
| Physical and occupational therapists | 2 |
| Chiropractors | 1 |
| Pharmacies | 2 |
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 (3 nearby)
Libraries
Counts are within about 4 miles 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.
Public schools here are run by Maple Valley Schools. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Fuller Street Elementary SchoolNashville | Pre-K–2 | 204 | Public | 2.1 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Maple Grove Township (Barry County), Woodland, Kalamo and Assyria.
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.