Winchester is a city in St. Louis County, Missouri, home to about 1,939 people across 0.3 square miles. It has no ZIP code of its own: it’s part of 63021.
Homes sold for a median of $192 per square foot in the three months ending August 2026, a seller’s market.
Part is in Winchester, part in Ballwin and Manchester
Each card is that ZIP code’s whole market, including any part outside Winchester. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Winchester’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Winchester well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | St. Louis Lambert International Airport (STL)15 miles away |
|---|---|
| Nearest city of 250,000+ | St. Louis, MO16 miles away |
| Nearest city of 1 million+ | Chicago, IL270 miles away |
Straight-line distances from the center of Winchester; 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.
Winchester had 1,447 residents in the 2020 census, down 12% since 2000.
It’s the 273rd largest of 1,060 towns in Missouri by population.
St. Louis County grew from 50,040 residents in 1900 to 1,004,125 in 2020.
St. Louis County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 89°F in summer, and winter lows average 22°F. About 42.4 inches of rain and melted snow fall in a typical year, with about 8 inches of snow.
Source: NOAA 1991–2020 climate normals, St Charles 7 Ssw, MO weather station (7 miles away).
629,036 jobs at 29,717 businesses in St. Louis County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
174 doctors and other health care providers list an office in Winchester.
Nearest hospitals
Providers with an office here
| Primary care doctors | 9 |
|---|---|
| Specialist doctors | 9 |
| Dentists | 15 |
| Nurse practitioners and physician assistants | 14 |
| Mental health providers | 61 |
| Physical and occupational therapists | 51 |
| Optometrists | 2 |
| Chiropractors | 13 |
| Pharmacies | 5 |
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 (2 nearby)
Grocery stores (1 nearby)
Pharmacies (2 nearby)
Libraries
Museums
Theaters and performance venues (1 nearby)
Counts are within about 1 mile 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.
Public schools here are run by Rockwood R-Vi, Parkway C-2. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Ballwin Elem.Ballwin | K–5 | 426 | Public | 1.3 mi |
| Barretts Elem.Manchester | K–5 | 378 | Public | 2.9 mi |
| Carman Trails Elem.Manchester | K–5 | 355 | Public | 1.8 mi |
| Hanna Woods Elem.Ballwin | K–5 | 360 | Public | 0.9 mi |
| Oak Brook Elem.Ballwin | K–5 | 401 | Public | 1.1 mi |
| Ridge Meadows Elem.Ellisville | K–5 | 267 | Public | 4.1 mi |
| Sorrento Springs Elem.Ballwin | K–5 | 288 | Public | 0.4 mi |
| Woerther Elem.Ballwin | K–5 | 423 | Public | 1.7 mi |
| Wren Hollow Elem.Ballwin | K–5 | 409 | Public | 0.2 mi |
| Center for Creative LearningEllisville | 1–5 | — | Alternative Education | 3.7 mi |
| Selvidge MiddleBallwin | 6–8 | 583 | Public | 2.0 mi |
| Southwest MiddleBallwin | 6–8 | 803 | Public | 0.4 mi |
| South HighManchester | 9–12 | 1,485 | Public | 0.7 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Al-Manara AcademyManchester | Pre-K–8 | 84 | Islamic | 1.1 mi |
| Holy Infant Elementary SchoolBallwin | Pre-K–8 | 420 | Roman Catholic | 1.8 mi |
| Academy of St. LouisManchester | K–12 | 35 | Roman Catholic | 0.8 mi |
| Academy of St LouisManchester | 1–12 | 36 | Roman Catholic | 0.8 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 Ballwin, Manchester, Ellisville, Wildwood and Twin Oaks.
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.