Saint Charles, MO ZIP codes
Saint Charles (also written St. Charles), Missouri has 4 ZIP codes, including 1 PO Box ZIP. They are in St. Charles County.
- Population in these ZIPs
- 141,951
- Avg. median income
- $98,700population-weighted
- Typical home value
- $355,500population-weighted
- Metro area
- St. Louis, MO-IL
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Saint Charles, MO ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 63301 | St. Charles County | 52,667 | $85,308 | $317,600 |
| 63302 PO Box | St. Charles County | — | — | — |
| 63303 | St. Charles County | 46,089 | $99,138 | $355,800 |
| 63304 | St. Charles County | 43,195 | $114,442 | $401,400 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Saint Charles
- Saint Peters 4 mi
- Maryland Heights 6 mi
- Bridgeton 6 mi
- Chesterfield 8 mi
- Hazelwood 9 mi
- Saint Ann 9 mi
- O Fallon 10 mi
- Florissant 11 mi
- Ballwin 12 mi
- Lake Saint Louis 14 mi
- Portage Des Sioux 14 mi
- Grover 15 mi
Frequently asked questions
What is the ZIP code for Saint Charles, MO?
Saint Charles, MO has 4 ZIP codes: 63301, 63302, 63303 and 63304.
What county is Saint Charles, Missouri in?
Saint Charles ZIP codes are in St. Charles County.
Which Saint Charles ZIP codes are PO Boxes?
63302 is a PO Box or single-organization ZIP code; it has no residential delivery area.