West Alton is a city in St. Charles County, Missouri, home to about 467 people across 29 square miles. Its ZIP code is 63386.
Mostly West Alton
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| Nearest major airport | St. Louis Lambert International Airport (STL)11 miles away |
|---|---|
| Nearest city of 250,000+ | St. Louis, MO17 miles away |
| Nearest city of 1 million+ | Chicago, IL245 miles away |
Straight-line distances from the center of West Alton; 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.
West Alton had 359 residents in the 2020 census, down 37% since 2000.
It’s the 536th largest of 1,060 towns in Missouri by population.
St. Charles County grew from 24,474 residents in 1900 to 405,262 in 2020.
St. Charles 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 22°F. About 41.9 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Alton - Melvin Price L&D, IL weather station (5 miles away).
143,624 jobs at 8,946 businesses in St. Charles 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.
Parks (20 nearby)
Grocery stores (1 nearby)
Pharmacies
Libraries (2 nearby)
Museums
Theaters and performance venues (2 nearby)
Counts are within about 3.5 miles 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.