San MarMD
In Maryland, this town has 306 residents.
Is San Mar a good place to live?
32% of residents live below the poverty line in San Mar, against 7% in Maryland’s towns and 9.6% across U.S. towns. Of the 262 Maryland towns we compare, none has a higher midpoint age than San Mar. San Mar has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
What makes San Mar stand out
Where San Mar beats most towns.
306 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
Raven Rock Mountain Complex and 31 more within 40 miles
Museums, parks, gardens and other places to visit around San Mar. Close and well known come first.
Big draw17 mi LandmarkRaven Rock Mountain Complex
Big draw36 mi LandmarkMount Weather Emergency Operations Center
6 mi National BattlefieldAntietam National Battlefield161K visitors a year
28 mi Ancient siteGettysburg Battlefield
15 mi National Historical ParkHarpers Ferry National Historical Park538K visitors a year
10 mi National park siteCatoctin Mountain Park461K visitors a yearPhoto credits
Raven Rock Mountain Complex: US Government, Public domain · Mount Weather Emergency Operations Center: Unknown, Public domain · Antietam National Battlefield: Acroterion, CC BY-SA 4.0 · Gettysburg Battlefield: Veggies, Public domain · Harpers Ferry National Historical Park: Mark Fickett, CC BY 3.0 · Catoctin Mountain Park: Acroterion, CC BY-SA 4.0
Moving to San Mar: who provides what
San Mar is unincorporated, so Washington County and regional agencies provide most services.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Mar 11, 2026.
The data
Ordered by what stands out in San Mar.
San Mar has 2.6 jobs for every working resident, and 411 people commute in
Between 2013 and 2023, jobs in San Mar rose by 49, to 414. For most workers, San Mar is a place to come home to: only 2% work in town. The top destinations are Hagerstown (12%), Frederick (11%) and Ballenger Creek (6%).
Where working residents work
Census LEHD 2023 · ACS
San Mar has a low natural-hazard risk, chiefly from inland flooding
On expected storm and flood damage, San Mar sits below 78% of U.S. communities. 63% of the town’s expected losses from natural hazards come from inland flooding, followed by hurricanes at 13%.
FEMA National Risk Index · OpenFEMA
Expect four seasons and pleasant summers in San Mar
In July, afternoons reach 87°; in January, nights fall to 23°, and about 28 inches of snow falls in a winter.
Typical low → high °F
NOAA U.S. Climate Normals, 1991–2020
Compared with most of Maryland and the rest of the country, fewer of San Mar’s adults report frequent mental distress
Among 262 Maryland towns, just one has a lower share of adults who binge drink than San Mar. The share of adults in San Mar who say their health is fair or poor: 21%. On the CDC’s 32 measures, San Mar is ahead of Maryland on 17 and behind on 10.
| San Mar | Maryland towns | U.S. towns | |
|---|---|---|---|
| Diabetes (CDC PLACES) | 18% | 12% | 12% |
| Frequent mental distress (CDC PLACES) | 10% | 15% | 17% |
| Binge drink (CDC PLACES) | 6.5% | 14% | 16% |
| High blood pressure (CDC PLACES) | 55% | 35% | 35% |
| What stands out | San Mar | MD |
|---|---|---|
| Fewer adults facing housing insecurity | 4.9% | 13.5% |
| Fewer adults facing a utility shut-off | 3.2% | 8.4% |
| More adults who have had cancer | 20.8% | 7.6% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
The median rent in San Mar is lower than in the typical Maryland or U.S. town
San Mar: 58% of households live in a home they own.
| San Mar | Maryland towns | U.S. towns | |
|---|---|---|---|
| Median rent | $616 a month | $1,809 a month | $1,185 a month |
| Households that own their home | 58% | 74% | 73% |
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
Everything we know about San Mar
Colleges nearby
4 within 15 miles of the center of San Mar
About 0 of every 100 San Mar residents are enrolled in college, against 7 across Maryland.
Every workday, about 411 people come to San Mar for work
Where San Mar’s working residents go each day. Line width shows the share.
Census LEHD 2023
About San Mar
CDP in Maryland, United States
San Mar is a census-designated place (CDP) in Washington County, Maryland, United States. The population was 515 at the 2000 census.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 0.5 sq mi
- Elevation
- 545 ft
Questions about San Mar
Short answers, built from the data on this page.
Is San Mar, MD a good place to live?
San Mar has fewer than 1,000 residents, too few for fair grades; the figures below are still real.