| ZIP Code | 20634 |
|---|---|
| City | Great Mills |
| State | Maryland (MD) |
| County | St. Mary's County |
| Area Code | 227/240/301 |
| Elevation | 96 ft |
| Latitude | 38.241711 |
|---|---|
| Longitude | -76.498277 |
| Timezone | New York (DST) |
| FIPS | 24037 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 32.3 yrs |
|---|---|
| Avg Household Size | 2.74 |
| Below Poverty | 4.3% ▼ 57% below avg |
| College Grads | 53.4% ▲ 38% above avg |
| Unemployment | 1.2% ▼ 75% below avg |
| No HS Diploma | 8 (0.2%) |
| HS Graduate | 839 (19.3%) |
| Some College | 492 (11.3%) |
| Associates | 685 (15.8%) |
| Bachelors | 567 (13.1%) |
| Graduate Degree | 1,752 (40.3%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $117,431 ▲ 54% above avg ↑ 26% since 2019 |
|---|---|
| Median Home Value | $334,800 ▲ 20% above avg ↑ 38% since 2019 |
| Home/Income Ratio | 2.9x (nat avg ~3.5x) |
| Median Rent | $1,689/mo ↑ 19% since 2019 |
| Total Units | 2,872 |
| Vacant Units | 334 |
| Avg HH Size | 2.74 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 2,872 |
|---|---|
| Vacant | 334 |
| Owner Occupied | 68.3% |
| Renter Occupied | 31.7% |
| Avg HH Size | 2.74 |
ZIP code 20634 is located in Great Mills, Maryland, within St. Mary's County. With a population of 6,976, this is a lightly populated ZIP code with a relatively young community — the median age is 32.3 years. Economically, 20634 is a upper-middle-income ZIP code: the median household income of $117,431 is significantly above the national average.
Real estate in ZIP code 20634 represents a mid-range housing market. The median home value of $334,800 is above the national average. Renters can expect to pay around $1,689 per month in median rent. Homeownership is strong here — 68.3% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 38% since 2019.
The population of 20634 is majority White (56.71%). Residents are well-educated — 53.4% hold a bachelor's degree or higher, which is above the national average. Poverty affects a relatively small share of residents at 4.3%. Household income has grown by 26% since 2019.
The unemployment rate in 20634 stands at 1.2%, which is well below the national average. About 15% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 75%.
Overall, ZIP code 20634 in Great Mills, MD is characterized as upper-middle-income, well-educated, a relatively young community, and predominantly owner-occupied. With 6,976 residents, a median household income of $117,431, and a median home value of $334,800, it offers a clear picture of life in this part of Maryland.