St. Charles is a city in St. Charles County, Missouri, home to about 71,508 people across 25 square miles. Its ZIP codes are 63301 and 63303.
Homes sold for a median of $177 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly St. Charles
Mostly St. Charles; also St. Peters
Each card is that ZIP code’s whole market, including any part outside St. Charles. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up St. Charles’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)8 miles away |
|---|---|
| Nearest city of 250,000+ | St. Louis, MO18 miles away |
| Nearest city of 1 million+ | Chicago, IL258 miles away |
Straight-line distances from the center of St. Charles; 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.
St. Charles had 70,493 residents in the 2020 census, up 17% since 2000.
It’s the 8th 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 88°F in summer, and winter lows average 22°F. About 45.8 inches of rain and melted snow fall in a typical year, with about 9 inches of snow.
Source: NOAA 1991–2020 climate normals, St Charles Elm Pt, MO weather station (2 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).
984 doctors and other health care providers list an office in St. Charles’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 72 |
|---|---|
| Specialist doctors | 113 |
| Dentists | 71 |
| Nurse practitioners and physician assistants | 102 |
| Mental health providers | 364 |
| Physical and occupational therapists | 176 |
| Optometrists | 19 |
| Chiropractors | 67 |
| Pharmacies | 26 |
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.
Parks (25 nearby)
Grocery stores (5 nearby)
Pharmacies (3 nearby)
Libraries (2 nearby)
Museums (3 nearby)
Theaters and performance venues (3 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.
Established in 1765.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Francis Howell R-III, Orchard Farm R-V, St. Charles R-Vi. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Becky-David Elem.St Charles | Pre-K–5 | 812 | Public | 4.0 mi |
| Early Child. Family Educ Ctr.St Charles | Pre-K | 189 | Public | 2.9 mi |
| Early Learning CenterSt. Charles | Pre-K | 230 | Public | 3.5 mi |
| Harvest Ridge Elem.St Charles | Pre-K–5 | 572 | Public | 2.7 mi |
| St.Charles Early Childhood CtrSt.Charles | Pre-K | 238 | Public | 1.5 mi |
| Blackhurst ElementarySt. Charles | K–4 | 227 | Public | 1.2 mi |
| Coverdell Elem.St Charles | K–4 | 291 | Public | 1.7 mi |
| Discovery ElementarySt. Charles | K–4 | 394 | Public | 3.0 mi |
| George M. Null Elem.St Charles | K–4 | 233 | Public | 0.6 mi |
| Harris Elem.St Charles | K–4 | 408 | Public | 2.3 mi |
| Henderson Elem.St Charles | K–5 | 653 | Public | 3.1 mi |
| Lincoln Elem.St Charles | K–4 | 160 | Public | 1.6 mi |
| Monroe Elem.St Charles | K–4 | 366 | Public | 1.0 mi |
| Orchard Farm ElementarySt. Charles | K–4 | 557 | Public | 8.5 mi |
| Jefferson Intermediate SchoolSt Charles | 5–6 | 706 | Public | 1.0 mi |
| Orchard Farm Middle SchoolSt Charles | 5–6 | 362 | Public | 8.5 mi |
| Barnwell MiddleSt Charles | 6–8 | 792 | Public | 4.1 mi |
| Hardin MiddleSt Charles | 7–8 | 676 | Public | 1.2 mi |
| Francis Howell North HighSt Charles | 9–12 | 1,716 | Public | 2.9 mi |
| Lewis Clark Career Ctr.St Charles | 9–12 | — | Career and Technical | 0.9 mi |
| Orchard Farm High SchoolSt. Charles | 9–12 | 698 | Public | 4.3 mi |
| St. Charles HighSt Charles | 9–12 | 782 | Public | 1.6 mi |
| St. Charles West HighSt Charles | 9–12 | 645 | Public | 1.1 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Academy of the Sacred HeartSaint Charles | Pre-K–8 | 164 | Roman Catholic | 2.1 mi |
| Immanuel Lutheran SchoolSaint Charles | Pre-K–8 | 366 | Lutheran Church–Missouri Synod | 1.6 mi |
| Seton Regional Catholic SchoolSaint Charles | Pre-K–8 | 248 | Roman Catholic | 1.5 mi |
| St Cletus SchoolSaint Charles | Pre-K–8 | 176 | Roman Catholic | 1.3 mi |
| St John Paul II PreparatorySaint Charles | Pre-K–12 | 176 | Roman Catholic | 1.1 mi |
| Trinity Lutheran SchoolSaint Charles | K–8 | 23 | Lutheran Church–Missouri Synod | 6.3 mi |
| Duchesne High SchoolSaint Charles | 9–12 | 225 | Roman Catholic | 1.1 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with St. Peters.
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.