St. Peters is a city in St. Charles County, Missouri, home to about 59,092 people across 22 square miles. Its ZIP code is 63376, and parts of 63303 and 63304 are in St. Peters too.
Homes sold for a median of $178 per square foot in the three months ending August 2026, a seller’s market.
Mostly St. Peters; also O'Fallon and Cottleville
Mostly St. Charles; part is in St. Peters
Part is in St. Peters, part in Weldon Spring and Cottleville
Each card is that ZIP code’s whole market, including any part outside St. Peters. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up St. Peters’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows St. Peters well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | St. Louis Lambert International Airport (STL)14 miles away |
|---|---|
| Nearest city of 250,000+ | St. Louis, MO22 miles away |
| Nearest city of 1 million+ | Chicago, IL262 miles away |
Straight-line distances from the center of St. Peters; 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. Peters had 57,732 residents in the 2020 census, up 12% since 2000.
It’s the 11th 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 21°F. About 42.4 inches of rain and melted snow fall in a typical year, with about 15 inches of snow.
Source: NOAA 1991–2020 climate normals, St Peters 2 Se, 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).
870 doctors and other health care providers list an office in St. Peters.
Nearest hospitals
Providers with an office here
| Primary care doctors | 58 |
|---|---|
| Specialist doctors | 133 |
| Dentists | 85 |
| Nurse practitioners and physician assistants | 137 |
| Mental health providers | 188 |
| Physical and occupational therapists | 174 |
| Optometrists | 26 |
| Chiropractors | 69 |
| Pharmacies | 23 |
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 (31 nearby)
Grocery stores (11 nearby)
Pharmacies (9 nearby)
Libraries (1 nearby)
Museums
Theaters and performance venues
Counts are within about 3 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 1910.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Fort Zumwalt School District, Mo Schls for the Sev Disabled, Francis Howell R-III. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Early Childhood CenterSt. Peters | Pre-K | 307 | Public | 2.8 mi |
| BoonslickSt Peters | K–12 | 23 | Special Education | 3.1 mi |
| Fairmount Elem.St Peters | K–5 | 971 | Public | 1.4 mi |
| Hawthorn Elem.St Peters | K–5 | 458 | Public | 1.6 mi |
| Mid Rivers Elem.St Peters | K–5 | 444 | Public | 1.3 mi |
| Progress South Elem.St Peters | K–5 | 642 | Public | 3.0 mi |
| Warren Elem.St Peters | K–5 | 729 | Public | 2.2 mi |
| Lewis Clark Elem.St Peters | 3–5 | 426 | Public | 1.1 mi |
| Dr. Bernard J. Dubray MiddleSt Peters | 6–8 | 869 | Public | 0.5 mi |
| Ft. Zumwalt South MiddleSt Peters | 6–8 | 823 | Public | 3.2 mi |
| Ft. Zumwalt East HighSt Peters | 9–12 | 1,171 | Public | 2.1 mi |
| Ft. Zumwalt South HighSt Peters | 9–12 | 1,212 | Public | 2.8 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| All Saints SchoolSaint Peters | Pre-K–8 | 125 | Roman Catholic | 1.6 mi |
| Child of God Lutheran SchoolSaint Peters | Pre-K–8 | 139 | Lutheran Church–Missouri Synod | 2.4 mi |
| Childrens Edu-Care Center Inc.Saint Peters | Pre-K–K | 6 | Nonsectarian | 0.1 mi |
| Lutheran High School of St Charles CountySaint Peters | 9–12 | 460 | Lutheran Church–Missouri Synod | 1.9 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. Charles, O'Fallon, Weldon Spring, Cottleville and Weldon Spring Heights.
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.