Ashton-Sandy Spring is a community in Montgomery County, Maryland, home to about 5,630 people across 10 square miles. Its ZIP codes are 20861 and 20862, and parts of 20777, 20833, 20860 and 20905 are in Ashton-Sandy Spring too.
Homes sold for a median of $271 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Ashton-Sandy Spring; also Cloverly
Mostly Ashton-Sandy Spring
Part is in Ashton-Sandy Spring, part in Highland
Mostly Olney; part is in Ashton-Sandy Spring
Mostly Olney; part is in Ashton-Sandy Spring
Mostly Cloverly; part is in Ashton-Sandy Spring
Each card is that ZIP code’s whole market, including any part outside Ashton-Sandy Spring. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Ashton-Sandy Spring’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)18 miles away |
|---|---|
| Nearest city of 250,000+ | Washington, DC17 miles away |
| Nearest city of 1 million+ | Philadelphia, PA116 miles away |
Straight-line distances from the center of Ashton-Sandy Spring; 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.
Ashton-Sandy Spring had 5,746 residents in the 2020 census, up 67% since 2000.
It’s the 189th largest of 527 towns in Maryland by population.
Montgomery County grew from 30,451 residents in 1900 to 1,062,061 in 2020.
Montgomery 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 26°F. About 47.5 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Laurel 3 W, MD weather station (7 miles away).
439,792 jobs at 27,677 businesses in Montgomery County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
21 doctors and other health care providers list an office in Ashton-Sandy Spring’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 2 |
|---|---|
| Specialist doctors | 4 |
| Dentists | 5 |
| Nurse practitioners and physician assistants | 1 |
| Mental health providers | 8 |
| Physical and occupational therapists | 1 |
| Pharmacies | 1 |
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
Pharmacies (1 nearby)
Libraries
Museums (2 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 2.5 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.
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Mater Amoris Montessori SchoolAshton | Pre-K–8 | 97 | Nonsectarian | 1.0 mi |
Source: U.S. Department of Education, NCES: Common Core of Data 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 Cloverly, Olney, Fairland, Highland, Spencerville and Brookeville.
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.