Union Star is a town in Andrew County, Missouri, home to about 559 people across 0.3 square miles. Its ZIP code is 64494.
Homes sold for a median of $141 per square foot in the three months ending August 2026, a buyer’s market.
Each card is that ZIP code’s whole market, including any part outside Union Star. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Union Star’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Kansas City International Airport (MCI)48 miles away |
|---|---|
| Nearest city of 250,000+ | Kansas City, MO59 miles away |
| Nearest city of 1 million+ | Chicago, IL382 miles away |
Straight-line distances from the center of Union Star; 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.
Union Star had 380 residents in the 2020 census, down 12% since 2000.
It’s the 491st largest of 1,060 towns in Missouri by population.
Andrew County grew from 17,332 residents in 1900 to 18,135 in 2020.
Andrew County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 87°F in summer, and winter lows average 16°F. About 37.2 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Cosby 2w, MO weather station (11 miles away).
1,746 jobs at 276 businesses in Andrew County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Public schools here are run by Union Star R-II. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Union Star PreschoolUnion Star | Pre-K | 9 | Public | 1.0 mi |
| Union Star Elem.Union Star | K–5 | 66 | Public | 1.0 mi |
| Union Star HighUnion Star | 6–12 | 91 | Public | 1.0 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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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.