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ZIP Code 20659
Mechanicsville, MD, St. Mary's County
Population
24,324
Land area
97sq mi
People per sq mi
251
City
Mechanicsville
ZIP 20659 and nearby ZIP codes
ZIP 20659 at a glance
- ZIP 20659 (Mechanicsville) is 61% less dense than Maryland as a whole.
- The median household income is $121,654, 17% above the Maryland median of $103,678.
- A typical owner-occupied home is valued at $416,900 and median rent is $1,527 a month.
Local data for ZIP 20659
Counts from official public data
Housing and community stats
ZIP 20659, American Community Survey 2020-2024
Median household income
$121,654
Poverty rate
7.5%
Median home value
$416,900
Prices +10.7% in a year
Median rent
$1,527/mo
Homeownership
88.6%
Bachelor's or higher
27.5%
Median age
37.5
Average commute
40.8 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
328
ZIP Business Patterns 2023
Employees
1,996
$99.8M annual payroll
PPP loans
$17.6M
313 loans
Campaign donations
$99.5K
39% D, 20% R, 2026 cycle
Environment and hazard risk
ZIP 20659, 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
85° / 25°F
48.1 inches of rain a year
Health statistics
Share of adults in ZIP 20659, CDC PLACES estimates
Obesity
37.5%
U.S. 33.3% +4.2 pts
Diabetes
11.5%
U.S. 12.1% -0.6 pts
Smoking
14.0%
U.S. 12.8% +1.2 pts
Uninsured (18-64)
7.2%
U.S. 11.1% -3.9 pts
Frequently asked questions
- What city is ZIP code 20659?
- ZIP code 20659 is in Mechanicsville, MD (St. Mary's County).
- What county is ZIP code 20659 in?
- ZIP code 20659 is mostly in St. Mary's County, Maryland.
- How many people live in ZIP code 20659?
- About 24,324 people live in the 20659 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.