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ZIP Code 21655
Preston, MD, Caroline County
Population
5,053
Land area
52.7sq mi
People per sq mi
96
City
Preston
ZIP 21655 and nearby ZIP codes
ZIP 21655 at a glance
- ZIP 21655 (Preston) is 85% less dense than Maryland as a whole.
- Households here earn a median of $90,385 a year, 13% less than the Maryland figure of $103,678.
- A typical owner-occupied home is valued at $289,200 (31% below Maryland) and median rent is $1,380 a month.
Local data for ZIP 21655
Counts from official public data
Housing and community stats
ZIP 21655, American Community Survey 2020-2024
Median household income
$90,385
Poverty rate
4.3%
Median home value
$289,200
Prices +3.7% in a year
Median rent
$1,380/mo
Homeownership
84.0%
Bachelor's or higher
24.0%
Median age
42.2
Average commute
29.2 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
91
ZIP Business Patterns 2023
Employees
614
$45.3M annual payroll
PPP loans
$9M
153 loans
Campaign donations
$13.6K
30% D, 14% R, 2026 cycle
Environment and hazard risk
ZIP 21655, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: drought
Storm events since 1996
738
Countywide, mostly thunderstorm wind
Flood insurance policies
158
1.1% of homes, county
July high / Jan low
88° / 29°F
47.6 inches of rain a year
Health statistics
Share of adults in ZIP 21655, CDC PLACES estimates
Obesity
38.3%
U.S. 33.3% +5.0 pts
Diabetes
12.1%
U.S. 12.1% about the same
Smoking
13.3%
U.S. 12.8% +0.5 pts
Uninsured (18-64)
7.0%
U.S. 11.1% -4.1 pts
Frequently asked questions
- What city is ZIP code 21655?
- ZIP code 21655 is in Preston, MD (Caroline County).
- What county is ZIP code 21655 in?
- ZIP code 21655 is mostly in Caroline County, Maryland.
- How many people live in ZIP code 21655?
- About 5,053 people live in the 21655 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.