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ZIP Code 21640
Henderson, MD, Caroline County
Population
1,163
Land area
25.7sq mi
People per sq mi
45
City
Henderson
ZIP 21640 and nearby ZIP codes
ZIP 21640 at a glance
- ZIP 21640 (Henderson) is 93% less dense than Maryland as a whole.
- Households here earn a median of $53,558 a year, 48% less than the Maryland figure of $103,678.
- A typical owner-occupied home is valued at $268,500 (36% below Maryland).
Local data for ZIP 21640
Counts from official public data
Housing and community stats
ZIP 21640, American Community Survey 2020-2024
Median household income
$53,558
Poverty rate
7.2%
Median home value
$268,500
Homeownership
92.4%
Bachelor's or higher
13.9%
Median age
39.9
Average commute
36.0 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
11
ZIP Business Patterns 2023
Employees
65
$2M annual payroll
PPP loans
$731K
22 loans
Campaign donations
$857
35% D, 65% R, 2026 cycle
Environment and hazard risk
ZIP 21640, 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
87° / 27°F
46.0 inches of rain a year
Health statistics
Share of adults in ZIP 21640, CDC PLACES estimates
Obesity
42.5%
U.S. 33.3% +9.2 pts
Diabetes
14.4%
U.S. 12.1% +2.3 pts
Smoking
19.8%
U.S. 12.8% +7.0 pts
Uninsured (18-64)
18.6%
U.S. 11.1% +7.5 pts
Frequently asked questions
- What city is ZIP code 21640?
- ZIP code 21640 is in Henderson, MD (Caroline County).
- What county is ZIP code 21640 in?
- ZIP code 21640 is mostly in Caroline County, Maryland.
- How many people live in ZIP code 21640?
- About 1,163 people live in the 21640 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.