Westminster is a city in Carroll County, Maryland, home to about 20,445 people across 6.6 square miles. Its ZIP codes are 21157 and 21158.
Homes sold for a median of $225 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Each card is that ZIP code’s whole market, including any part outside Westminster. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Westminster’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Baltimore/Washington International Thurgood Marshall Airport (BWI)34 miles away |
|---|---|
| Nearest city of 250,000+ | Baltimore, MD29 miles away |
| Nearest city of 1 million+ | Philadelphia, PA104 miles away |
Straight-line distances from the center of Westminster; 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.
Westminster had 20,126 residents in the 2020 census, up 20% since 2000.
It’s the 68th largest of 527 towns in Maryland by population.
Carroll County grew from 33,860 residents in 1900 to 172,891 in 2020.
Carroll County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 85°F in summer, and winter lows average 21°F. About 44.1 inches of rain and melted snow fall in a typical year, with about 28 inches of snow.
Source: NOAA 1991–2020 climate normals, Hanover 4 Sw, PA weather station (13 miles away).
53,981 jobs at 4,279 businesses in Carroll County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
942 doctors and other health care providers list an office in Westminster’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 66 |
|---|---|
| Specialist doctors | 142 |
| Dentists | 57 |
| Nurse practitioners and physician assistants | 180 |
| Mental health providers | 334 |
| Physical and occupational therapists | 140 |
| Optometrists | 16 |
| Chiropractors | 7 |
| Pharmacies | 22 |
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 (14 nearby)
Grocery stores (7 nearby)
Pharmacies
Libraries (4 nearby)
Museums (3 nearby)
Theaters and performance venues (3 nearby)
Counts are within about 2 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 1764.
Colleges and universities
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 Carroll County Public Schools. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Carroll Springs SchoolWestminster | Pre-K–12 | 32 | Special Education | 1.9 mi |
| Cranberry Station ElementaryWestminster | Pre-K–5 | 593 | Public | 1.7 mi |
| Friendship Valley ElementaryWestminster | Pre-K–5 | 518 | Public | 2.8 mi |
| Robert Moton ElementaryWestminster | Pre-K–5 | 440 | Public | 3.5 mi |
| Runnymede ElementaryWestminster | Pre-K–5 | 625 | Public | 6.0 mi |
| Westminster ElementaryWestminster | Pre-K–5 | 564 | Public | 1.2 mi |
| William Winchester ElementaryWestminster | Pre-K–5 | 587 | Public | 0.6 mi |
| Winfield ElementaryWestminster | Pre-K–5 | 724 | Public | 9.5 mi |
| PRIDE SchoolWestminster | K–5 | 6 | Alternative Education | 2.8 mi |
| Crossroads Middle SchoolWestminster | 6–8 | 13 | Alternative Education | 3.6 mi |
| Westminster East MiddleWestminster | 6–8 | 796 | Public | 1.1 mi |
| Westminster West MiddleWestminster | 6–8 | 923 | Public | 0.6 mi |
| Flexible Student SupportWestminster | 9–12 | 44 | Alternative Education | 3.6 mi |
| Gateway SchoolWestminster | 9–12 | 80 | Alternative Education | 3.6 mi |
| Westminster HighWestminster | 9–12 | 1,477 | Public | 3.1 mi |
| Winters Mill HighWestminster | 9–12 | 1,156 | Public | 1.8 mi |
| Carroll County Career & Technology CenterWestminster | 11–12 | — | Career and Technical | 3.3 mi |
| Post Secondary ProgramWestminster | 12 | 36 | Alternative Education | 1.9 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Carroll Christian SchoolsWestminster | Pre-K–12 | 329 | Baptist | 2.0 mi |
| Christian Preschool & Kindergarten ProgramWestminster | Pre-K–K | 10 | Presbyterian | 1.9 mi |
| Montessori School of WestminsterWestminster | Pre-K–8 | 103 | Nonsectarian | 2.0 mi |
| North Carroll Community SchoolWestminster | Pre-K–8 | 170 | Nonsectarian | 3.7 mi |
| St John SchoolWestminster | Pre-K–8 | 233 | Roman Catholic | 0.6 mi |
| St John SchoolWestminster | Pre-K–8 | 240 | Roman Catholic | 0.6 mi |
| Carroll Lutheran SchoolWestminster | K–8 | 104 | Evangelical Lutheran Church in America | 3.1 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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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.