Gaithersburg is a city in Montgomery County, Maryland, home to about 69,825 people across 10 square miles. Its ZIP codes are 20877, 20878 and 20899, and parts of 20879 are in Gaithersburg too.
Homes sold for a median of $285 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Gaithersburg; also Redland and Flower Hill
Mostly Gaithersburg; also North Potomac and Darnestown
All in Gaithersburg
Mostly Flower Hill; part is in Gaithersburg
Each card is that ZIP code’s whole market, including any part outside Gaithersburg. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Gaithersburg’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Washington Dulles International Airport (IAD)18 miles away |
|---|---|
| Nearest city of 250,000+ | Washington, DC19 miles away |
| Nearest city of 1 million+ | Philadelphia, PA127 miles away |
Straight-line distances from the center of Gaithersburg; 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.
Gaithersburg had 69,657 residents in the 2020 census, up 32% since 2000.
It’s the 9th 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 87°F in summer, and winter lows average 27°F. About 41.5 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Rockville 1 Ne, MD weather station (4 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).
1,029 doctors and other health care providers list an office in Gaithersburg’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 89 |
|---|---|
| Specialist doctors | 85 |
| Dentists | 129 |
| Nurse practitioners and physician assistants | 117 |
| Mental health providers | 488 |
| Physical and occupational therapists | 91 |
| Optometrists | 13 |
| Chiropractors | 17 |
| Pharmacies | 30 |
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 (34 nearby)
Grocery stores (15 nearby)
Pharmacies (6 nearby)
Libraries (2 nearby)
Museums (2 nearby)
Theaters and performance venues (3 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.
Established in 1802.
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 Montgomery County Public Schools. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Brown Station ElementaryGaithersburg | Pre-K–5 | 572 | Public | 0.8 mi |
| Diamond ElementaryGaithersburg | Pre-K–5 | 654 | Public | 1.0 mi |
| Fields Road ElementaryGaithersburg | Pre-K–5 | 453 | Public | 0.8 mi |
| Flower Hill ElementaryGaithersburg | Pre-K–5 | 454 | Public | 3.4 mi |
| Gaithersburg ElementaryGaithersburg | Pre-K–5 | 603 | Public | 1.9 mi |
| Harriet R. Tubman ElementaryGaithersburg | Pre-K–5 | 571 | Public | 2.5 mi |
| Judith A. Resnik ElementaryGaithersburg | Pre-K–5 | 516 | Public | 5.2 mi |
| Rachel Carson ElementaryGaithersburg | Pre-K–5 | 671 | Public | 1.5 mi |
| Rosemont ElementaryGaithersburg | Pre-K–5 | 564 | Public | 2.0 mi |
| South Lake ElementaryGaithersburg | Pre-K–5 | 746 | Public | 2.3 mi |
| Stone Mill ElementaryNorth Potomac | Pre-K–5 | 516 | Public | 2.6 mi |
| Strawberry Knoll ElementaryGaithersburg | Pre-K–5 | 448 | Public | 3.3 mi |
| Summit Hall ElementaryGaithersburg | Pre-K–5 | 413 | Public | 1.5 mi |
| Thurgood Marshall ElementaryGaithersburg | Pre-K–5 | 553 | Public | 2.0 mi |
| Washington Grove ElementaryGaithersburg | Pre-K–5 | 480 | Public | 2.4 mi |
| Whetstone ElementaryGaithersburg | Pre-K–5 | 711 | Public | 3.2 mi |
| Darnestown ElementaryGaithersburg | K–5 | 356 | Public | 3.8 mi |
| DuFief ElementaryGaithersburg | K–5 | 276 | Public | 2.1 mi |
| Jones Lane ElementaryGaithersburg | K–5 | 428 | Public | 2.9 mi |
| Travilah ElementaryNorth Potomac | K–5 | 372 | Public | 3.5 mi |
| Forest Oak MiddleGaithersburg | 6–8 | 828 | Public | 2.6 mi |
| Gaithersburg MiddleGaithersburg | 6–8 | 869 | Public | 2.1 mi |
| Lakelands Park MiddleGaithersburg | 6–8 | 993 | Public | 1.1 mi |
| Ridgeview MiddleGaithersburg | 6–8 | 722 | Public | 1.4 mi |
| Shady Grove MiddleGaithersburg | 6–8 | 514 | Public | 3.3 mi |
| Gaithersburg HighGaithersburg | 9–12 | 2,441 | Public | 1.6 mi |
| Quince Orchard HighGaithersburg | 9–12 | 2,100 | Public | 1.9 mi |
| Watkins Mill HighGaithersburg | 9–12 | 1,577 | Public | 3.8 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Covenant Life SchoolGaithersburg | Pre-K–12 | 444 | Christian (no specific denomination) | 4.2 mi |
| Epworth Preschool & KindergartenGaithersburg | Pre-K–TK | 10 | Methodist | 2.0 mi |
| Gaithersburg Presbyterian Preschool & KindergartenGaithersburg | Pre-K–K | 7 | Presbyterian | 1.9 mi |
| Goddard School in GaithersburgGaithersburg | Pre-K–K | 2 | Nonsectarian | 0.4 mi |
| Goddard School in Gaithersburg, theGaithersburg | Pre-K–K | 2 | Nonsectarian | 1.9 mi |
| Mother of God SchoolGaithersburg | Pre-K–8 | 198 | Roman Catholic | 4.9 mi |
| Nist Child Care CenterGaithersburg | Pre-K–K | 12 | Nonsectarian | 0.6 mi |
| Optimal Learning SchoolGermantown | Pre-K–K | 20 | Nonsectarian | 5.4 mi |
| St Martin of Tours SchoolGaithersburg | Pre-K–8 | 193 | Roman Catholic | 1.6 mi |
| St Martin of Tours SchoolGaithersburg | Pre-K–8 | 186 | Roman Catholic | 1.6 mi |
| Shaare Torah KindergartenGaithersburg | K | 2 | Jewish | 1.1 mi |
| The Foundation School of Montgomery CountyGaithersburg | 4–12 | 68 | Nonsectarian | 2.3 mi |
| Forbush School at Oakmont Upper SchoolGaithersburg | 8–12 | 42 | Nonsectarian | 2.3 mi |
| Marcia D Smith SchoolGaithersburg | 8–12 | 13 | Nonsectarian | 2.0 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 North Potomac, Flower Hill, Darnestown, Redland, Germantown, Travilah and Montgomery Village.
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.