Annapolis is a city in Iron County, Missouri, home to about 427 people across 0.4 square miles. Its ZIP code is 63620.
Homes sold for a median of $155 per square foot in the three months ending August 2026, a balanced market.
Each card is that ZIP code’s whole market, including any part outside Annapolis. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | St. Louis Lambert International Airport (STL)95 miles away |
|---|---|
| Closer regional airport | Cape Girardeau Regional Airport (CGI)62 miles away |
| Nearest city of 250,000+ | St. Louis, MO89 miles away |
| Nearest city of 1 million+ | Chicago, IL345 miles away |
Straight-line distances from the center of Annapolis; 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.
Annapolis had 250 residents in the 2020 census, down 19% since 2000.
It’s the 554th largest of 1,060 towns in Missouri by population.
Iron County grew from 8,716 residents in 1900 to 9,537 in 2020.
Iron County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 89°F in summer, and winter lows average 23°F. About 48.7 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Clearwater Dam, MO weather station (19 miles away).
1,822 jobs at 193 businesses in Iron County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1 doctors and other health care providers list an office in Annapolis.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 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.
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.
Public schools here are run by South Iron Co. R-I. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| South Iron Elem.Annapolis | Pre-K–6 | 139 | Public | 2.9 mi |
| South Iron HighAnnapolis | 7–12 | 145 | Public | 2.9 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.