Mount Aetna is a community in Washington County, Maryland, home to about 637 people across 1.4 square miles. It has no ZIP code of its own: it’s part of 21740 and 21742.
Homes sold for a median of $179 per square foot across 2 ZIP codes in the three months ending August 2026, and 1 of 2 were seller’s markets.
Mostly Hagerstown; part is in Mount Aetna
Part is in Mount Aetna, part in Hagerstown and Robinwood
Each card is that ZIP code’s whole market, including any part outside Mount Aetna. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Mount Aetna’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Mount Aetna well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Washington Dulles International Airport (IAD)50 miles away |
|---|---|
| Closer regional airport | Hagerstown Regional Richard A Henson Field (HGR)4 miles away |
| Nearest city of 250,000+ | Baltimore, MD63 miles away |
| Nearest city of 1 million+ | Philadelphia, PA139 miles away |
Straight-line distances from the center of Mount Aetna; 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.
Mount Aetna had 580 residents in the 2020 census, down 31% since 2000.
It’s the 367th largest of 527 towns in Maryland by population.
Washington County grew from 45,133 residents in 1900 to 154,705 in 2020.
Washington County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 22°F. About 43.6 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Hagerstown 1 E, MD weather station (about a mile away).
61,729 jobs at 3,417 businesses in Washington County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1,619 doctors and other health care providers list an office in Mount Aetna’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 131 |
|---|---|
| Specialist doctors | 311 |
| Dentists | 84 |
| Nurse practitioners and physician assistants | 359 |
| Mental health providers | 508 |
| Physical and occupational therapists | 181 |
| Optometrists | 30 |
| Chiropractors | 15 |
| Pharmacies | 46 |
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 (13 nearby)
Grocery stores (2 nearby)
Pharmacies (1 nearby)
Libraries (1 nearby)
Museums (1 nearby)
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 Washington County Public Schools. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Bester ElementaryHagerstown | Pre-K–5 | 490 | Public | 1.3 mi |
| Emma K. Doub ElementaryHagerstown | Pre-K–5 | 389 | Public | 2.5 mi |
| Fountain Rock ElementaryHagerstown | Pre-K–5 | 319 | Public | 6.4 mi |
| Fountaindale ElementaryHagerstown | Pre-K–5 | 413 | Public | 1.5 mi |
| Jonathan Hager ElementaryHagerstown | Pre-K–5 | 498 | Public | 2.8 mi |
| Lincolnshire ElementaryHagerstown | Pre-K–5 | 503 | Public | 3.5 mi |
| Marshall Street SchoolHagerstown | Pre-K–12 | 47 | Special Education | 1.5 mi |
| Old Forge ElementaryHagerstown | Pre-K–5 | 354 | Public | 4.9 mi |
| Pangborn ElementaryHagerstown | Pre-K–5 | 749 | Public | 0.9 mi |
| Paramount ElementaryHagerstown | Pre-K–5 | 397 | Public | 2.5 mi |
| Potomac Heights ElementaryHagerstown | Pre-K–5 | 351 | Public | 0.8 mi |
| Rockland Woods ElementaryHagerstown | Pre-K–5 | 655 | Public | 5.3 mi |
| Ruth Ann Monroe PrimaryHagerstown | Pre-K–2 | 579 | Public | 2.0 mi |
| Salem Avenue ElementaryHagerstown | Pre-K–5 | 713 | Public | 1.7 mi |
| Eastern ElementaryHagerstown | 3–5 | 439 | Public | 1.8 mi |
| E. Russell Hicks MiddleHagerstown | 6–8 | 841 | Public | 2.7 mi |
| Northern MiddleHagerstown | 6–8 | 841 | Public | 1.2 mi |
| Western Heights MiddleHagerstown | 6–8 | 883 | Public | 1.4 mi |
| Barbara Ingram School for the ArtsHagerstown | 9–12 | 347 | Public | 0.9 mi |
| Evening High SchoolHagerstown | 9–12 | — | Alternative Education | 2.8 mi |
| North Hagerstown HighHagerstown | 9–12 | 1,583 | Public | 1.1 mi |
| South Hagerstown HighHagerstown | 9–12 | 1,690 | Public | 2.3 mi |
| Washington County Job Development CenterHagerstown | 12 | 38 | Special Education | 1.5 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Emmanuel Christian SchoolHagerstown | Pre-K–12 | 129 | Baptist | 5.4 mi |
| Grace AcademyHagerstown | Pre-K–12 | 359 | Christian (no specific denomination) | 3.5 mi |
| Hagerstown Childrens SchoolHagerstown | Pre-K–K | 13 | Nonsectarian | 0.7 mi |
| Heritage AcademyHagerstown | Pre-K–12 | 211 | Christian (no specific denomination) | 6.4 mi |
| Md Intl School of Sustainability & TechnologyHagerstown | Pre-K–11 | 3 | Nonsectarian | 0.8 mi |
| St Mary Catholic SchoolHagerstown | Pre-K–8 | 169 | Roman Catholic | 1.0 mi |
| Truth Christian AcademyHagerstown | Pre-K–12 | 91 | Church of God | 1.5 mi |
| Mt Aetna Adventist School (Maas)Hagerstown | K–8 | 130 | Seventh-day Adventist | 6.8 mi |
| Paradise Mennonite SchoolHagerstown | K–11 | 229 | Mennonite | 3.9 mi |
| Conocoheague Mennonite SchoolHagerstown | 1–10 | 28 | Mennonite | 4.8 mi |
| Hillside Mennonite SchoolHagerstown | 1–10 | 181 | Mennonite | 5.6 mi |
| St James SchoolHagerstown | 8–12 | 240 | Episcopal | 5.8 mi |
| Highland View AcademyHagerstown | 9–12 | 97 | Seventh-day Adventist | 6.3 mi |
| St Maria Goretti Catholic High SchoolHagerstown | 9–12 | 155 | Roman Catholic | 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 Hagerstown, Robinwood, Halfway, Fountainhead-Orchard Hills, St. James, Maugansville, Paramount-Long Meadow, Wilson-Conococheague, Leitersburg, Beaver Creek, Bagtown, Reid, Jugtown, Cearfoss, Ringgold, Kemps Mill, Fairview and Middleburg.
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.