Armstrong is a city in Howard County, Missouri, home to about 416 people across 0.8 square miles. Its ZIP code is 65230.
Homes sold for a median of $65 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Armstrong. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Kansas City International Airport (MCI)107 miles away |
|---|---|
| Closer regional airport | Columbia Regional Airport (COU)40 miles away |
| Nearest city of 250,000+ | Kansas City, MO99 miles away |
| Nearest city of 1 million+ | Chicago, IL318 miles away |
Straight-line distances from the center of Armstrong; 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.
Armstrong had 243 residents in the 2020 census, down 15% since 2000.
It’s the 563rd largest of 1,060 towns in Missouri by population.
Howard County grew from 18,337 residents in 1900 to 10,151 in 2020.
Howard County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 88°F in summer, and winter lows average 18°F. About 39.8 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Salisbury, MO weather station (13 miles away).
2,038 jobs at 179 businesses in Howard 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.
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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.