Arcadia is a city in Iron County, Missouri, home to about 586 people across 0.8 square miles. Its ZIP code is 63621, and parts of 63650 are in Arcadia too.
Homes sold for a median of $165 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Arcadia
Mostly Ironton; part is in Arcadia
Each card is that ZIP code’s whole market, including any part outside Arcadia. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Arcadia’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | St. Louis Lambert International Airport (STL)87 miles away |
|---|---|
| Closer regional airport | Cape Girardeau Regional Airport (CGI)60 miles away |
| Nearest city of 250,000+ | St. Louis, MO81 miles away |
| Nearest city of 1 million+ | Chicago, IL337 miles away |
Straight-line distances from the center of Arcadia; 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.
Arcadia had 618 residents in the 2020 census, up 9% since 2000.
It’s the 482nd 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 88°F in summer, and winter lows average 21°F. About 46.4 inches of rain and melted snow fall in a typical year, with about 9 inches of snow.
Source: NOAA 1991–2020 climate normals, Fredericktown, MO weather station (17 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).
6 doctors and other health care providers list an office in Arcadia.
Nearest hospitals
Providers with an office here
| Specialist doctors | 1 |
|---|---|
| Nurse practitioners and physician assistants | 1 |
| Mental health providers | 4 |
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.
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Shares ZIP codes with Ironton, Pilot Knob and Iron Mountain Lake.
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.