Greentop is a city in Adair County, Missouri, home to about 331 people across 0.8 square miles. It has no ZIP code of its own: it’s part of 63546.
Homes sold for a median of $143 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 Greentop. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Des Moines International Airport (DSM)100 miles away |
|---|---|
| Closer regional airport | Kirksville Regional Airport (IRK)17 miles away |
| Nearest city of 250,000+ | Kansas City, MO135 miles away |
| Nearest city of 1 million+ | Chicago, IL274 miles away |
Straight-line distances from the center of Greentop; 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.
Greentop had 388 residents in the 2020 census, down 9% since 2000.
It’s the 617th largest of 1,060 towns in Missouri by population.
Adair County grew from 21,728 residents in 1900 to 25,314 in 2020.
Adair County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 15°F. About 42.6 inches of rain and melted snow fall in a typical year, with about 19 inches of snow.
Source: NOAA 1991–2020 climate normals, Kirksville, MO weather station (10 miles away).
8,275 jobs at 606 businesses in Adair 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.
Grocery stores
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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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.