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ZIP Code 20634
California, MD, St. Mary's County
Population
7,088
Land area
7sq mi
People per sq mi
1,014
City
California
ZIP 20634 and nearby ZIP codes
ZIP 20634 at a glance
- ZIP 20634 (California) is 59% denser than Maryland as a whole.
- Households here earn a median of $139,375 a year, 34% more than the Maryland figure of $103,678.
- A typical owner-occupied home is valued at $342,300 (18% below Maryland) and median rent is $1,814 a month.
Local data for ZIP 20634
Counts from official public data
Housing and community stats
ZIP 20634, American Community Survey 2020-2024
Median household income
$139,375
Poverty rate
4.7%
Median home value
$342,300
Prices +18.9% in a year
Median rent
$1,814/mo
Homeownership
65.4%
Bachelor's or higher
40.3%
Median age
32.0
Average commute
23.6 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
48
ZIP Business Patterns 2023
Employees
393
$19.7M annual payroll
PPP loans
$5.9M
65 loans
Campaign donations
$23K
9% D, 37% R, 2026 cycle
Environment and hazard risk
ZIP 20634, 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
88° / 30°F
Health statistics
Share of adults in ZIP 20634, CDC PLACES estimates
Obesity
39.2%
U.S. 33.3% +5.9 pts
Diabetes
11.0%
U.S. 12.1% -1.1 pts
Smoking
13.1%
U.S. 12.8% about the same
Uninsured (18-64)
7.9%
U.S. 11.1% -3.2 pts
Frequently asked questions
- What city is ZIP code 20634?
- ZIP code 20634 is in California, MD (St. Mary's County).
- What county is ZIP code 20634 in?
- ZIP code 20634 is mostly in St. Mary's County, Maryland.
- How many people live in ZIP code 20634?
- About 7,088 people live in the 20634 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.