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ZIP Code 20630
St. George Island, MD, St. Mary's County
Population
559
Land area
6.9sq mi
People per sq mi
81
City
St. George Island
ZIP 20630 and nearby ZIP codes
ZIP 20630 at a glance
- ZIP 20630 (St. George Island) is 87% less dense than Maryland as a whole.
- Households here earn a median of $233,411 a year, about 2.3 times the Maryland figure of $103,678.
- A typical owner-occupied home is valued at $618,100 (47% above Maryland).
Local data for ZIP 20630
Counts from official public data
Housing and community stats
ZIP 20630, American Community Survey 2020-2024
Median household income
$233,411
Poverty rate
0.0%
Median home value
$618,100
Prices +2.1% in a year
Homeownership
75.1%
Bachelor's or higher
70.0%
Median age
56.1
Average commute
34.3 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
8
ZIP Business Patterns 2023
Employees
19
$850K annual payroll
PPP loans
$560K
9 loans
Campaign donations
$3,476
75% D, 16% R, 2026 cycle
Environment and hazard risk
ZIP 20630, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: hurricane
Storm events since 1996
1,019
Countywide, mostly thunderstorm wind
Flood insurance policies
990
2.4% of homes, county
July high / Jan low
87° / 30°F
46.3 inches of rain a year
Health statistics
Share of adults in ZIP 20630, CDC PLACES estimates
Obesity
36.2%
U.S. 33.3% +2.9 pts
Diabetes
11.3%
U.S. 12.1% -0.8 pts
Smoking
11.9%
U.S. 12.8% -0.9 pts
Uninsured (18-64)
6.2%
U.S. 11.1% -4.9 pts
Frequently asked questions
- What city is ZIP code 20630?
- ZIP code 20630 is in St. George Island, MD (St. Mary's County).
- What county is ZIP code 20630 in?
- ZIP code 20630 is mostly in St. Mary's County, Maryland.
- How many people live in ZIP code 20630?
- About 559 people live in the 20630 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.