| ZIP Code | 20620 |
|---|---|
| City | Callaway |
| State | Maryland (MD) |
| County | St. Mary's County |
| Area Code | 227/240/301 |
| Elevation | 53 ft |
| Latitude | 38.233122 |
|---|---|
| Longitude | -76.52183 |
| Timezone | New York (DST) |
| FIPS | 24037 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 38.8 yrs ↓ 2% since 2019 |
|---|---|
| Avg Household Size | 2.98 |
| Below Poverty | 3.7% ▼ 63% below avg |
| College Grads | 26.6% ▼ 31% below avg |
| Unemployment | 0.0% ▼ 100% below avg |
| No HS Diploma | 11 (1.1%) |
| HS Graduate | 334 (34.4%) |
| Some College | 162 (16.7%) |
| Associates | 206 (21.2%) |
| Bachelors | 94 (9.7%) |
| Graduate Degree | 164 (16.9%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $154,188 ▲ 102% above avg ↑ 62% since 2019 |
|---|---|
| Median Home Value | $369,200 ▲ 32% above avg ↑ 56% since 2019 |
| Home/Income Ratio | 2.4x (nat avg ~3.5x) |
| Median Rent | $1,360/mo ↓ 4% since 2019 |
| Total Units | 426 |
| Vacant Units | 39 |
| Avg HH Size | 2.98 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 426 |
|---|---|
| Vacant | 39 |
| Owner Occupied | 84.8% |
| Renter Occupied | 15.3% |
| Avg HH Size | 2.98 |
ZIP code 20620 is located in Callaway, Maryland, within St. Mary's County. With a population of 1,160, this is a sparsely populated ZIP code with a middle-aged community — the median age is 38.8 years. Economically, 20620 is a affluent ZIP code: the median household income of $154,188 is more than double the national average.
Real estate in ZIP code 20620 represents a mid-range housing market. The median home value of $369,200 is above the national average. Renters can expect to pay around $1,360 per month in median rent. Homeownership is strong here — 84.8% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 56% since 2019.
The population of 20620 is majority White (60.86%). Residents are moderately educated — 26.6% hold a bachelor's degree or higher, which is below the national average. Poverty affects a relatively small share of residents at 3.7%. Household income has grown by 62% since 2019.
About 12% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 78%.
Overall, ZIP code 20620 in Callaway, MD is characterized as affluent, moderately educated, a middle-aged community, and predominantly owner-occupied. With 1,160 residents, a median household income of $154,188, and a median home value of $369,200, it offers a clear picture of life in this part of Maryland.