Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 37.4 yrs |
|---|---|
| Avg HH Size | 1.90 |
| Below Poverty | 7.4% ▼ 26% below avg |
| College Grads | 45.5% ▲ 17% above avg |
| Unemployment | 3.6% ▼ 26% below avg |
| No HS Diploma | 743 (1%) |
| HS Graduate | 20,892 (28.5%) |
| Some College | 9,097 (12.4%) |
| Associates | 9,454 (12.9%) |
| Bachelors | 6,585 (9%) |
| Graduate Degree | 26,468 (36.1%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $119,717 ▲ 57% above avg |
|---|---|
| Median Home Value | $394,861 ▲ 42% above avg |
| Home/Income Ratio | 3.3x (nat avg ~3.5x) |
| Median Rent | $1,676/mo |
| Total Housing Units | 47,070 |
| Vacant Units | 4,335 |
Income Distribution
How People Get to Work
Commute Time
Year Built
St. Mary's County is located in Maryland and encompasses 29 ZIP codes spanning 29 cities and communities. The county has an estimated population of 118,020 residents. With a median age of 37.44, it is a relatively young county.
St. Mary's County has a upper-middle-income economic profile. The median household income of $119,717 is significantly above the national average. Unemployment stands at 3.6%, below the national average. The poverty rate of 7.4% is well below the national average.
Housing in St. Mary's County is a mid-range housing market, with a median home value of $394,861 — above the national average. Monthly median rent is approximately $1,676. Homeownership rates are high at 73.8%, reflecting a largely residential, stable population.
The residents of St. Mary's County are primarily White (71.37%). Educational attainment is well-educated — 45.5% of adults hold a bachelor's degree or higher, above the national average.
St. Mary's County, MD is a upper-middle-income area in Maryland. The 29 ZIP codes within the county each have their own character — browse the full list below to find the right community, whether you're looking for affordable housing, strong schools, or economic opportunity.
| ZIP | City | Population | Median Income | Median Home | Median Rent | Unemp. | College |
|---|---|---|---|---|---|---|---|
| 20606 | Abell | 204 | $86,406 | $464,100 | — | 7.3% | 51.3% |
| 20609 | Avenue | 976 | $114,181 | $474,700 | — | 6.8% | 32.2% |
| 20618 | Bushwood | 1,513 | $103,115 | $291,900 | $1,606 | 12.1% | 23.4% |
| 20619 | California | 14,743 | $114,848 | $364,200 | $2,015 | 2.6% | 58.5% |
| 20620 | Callaway | 1,160 | $154,188 | $369,200 | $1,360 | 0.0% | 26.6% |
| 20622 | Charlotte Hall | 5,259 | $118,938 | $416,400 | $1,659 | 3.4% | 38.0% |
| 20624 | Clements | 1,157 | $99,638 | $423,700 | $1,183 | 2.2% | 25.2% |
| 20626 | Coltons Point | 198 | $53,143 | — | — | 0.0% | 75.6% |
| 20628 | Dameron | 791 | $160,043 | $412,100 | — | 5.5% | 40.5% |
| 20630 | Drayden | 346 | $227,581 | $584,600 | — | 8.3% | 79.3% |
| 20634 | Great Mills | 6,976 | $117,431 | $334,800 | $1,689 | 1.2% | 53.4% |
| 20636 | Hollywood | 10,357 | $159,800 | $470,300 | $1,158 | 4.1% | 46.2% |
| 20650 | Leonardtown | 15,979 | $139,688 | $464,000 | $1,726 | 4.2% | 50.2% |
| 20653 | Lexington Park | 26,799 | $97,923 | $341,900 | $1,579 | 4.2% | 45.2% |
| 20659 | Mechanicsville | 23,918 | $117,571 | $388,400 | $1,781 | 3.2% | 35.4% |
| 20670 | Patuxent River | 1,577 | $70,945 | — | $2,232 | 0.0% | 42.8% |
| 20674 | Piney Point | 638 | $126,029 | $398,600 | $1,707 | 7.0% | 48.3% |
| 20680 | Ridge | 702 | $81,125 | $392,400 | — | 0.3% | 40.2% |
| 20684 | Saint Inigoes | 825 | $176,938 | $375,500 | — | 0.0% | 53.3% |
| 20690 | Tall Timbers | 1,046 | $129,236 | $558,900 | $1,490 | 15.0% | 60.7% |
| 20692 | Valley Lee | 438 | $120,491 | $381,700 | — | 0.0% | 43.3% |