ZIP code 21640: Henderson, MD
21640 is a ZIP code in Henderson, Maryland, mainly in Caroline County. About 1,163 people live here.
- Population
- 1,163
- Median household income
- $53,558
- Typical home value
- $396,100+2.3% in 12 months
- Median rent
- —gross, per month
- Median age
- 39.9
- Homeowners
- 92.4%of occupied homes
Shaded: ZIP code 21640's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 21640 details
| City | Henderson |
|---|---|
| State | Maryland |
| County | Caroline County (also partly Queen Anne's County) |
| Metro area | Not in a metro or micro area |
| Time zone | Eastern Time (UTC−5), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 25.7 sq mi, plus 0.1 sq mi of water |
| Population density | 45 people per sq mi |
| Bachelor's degree or higher | 13.9% of adults 25+ |
| Average commute | 36 minutes |
| Center coordinates | 39.06814, -75.82095 |
ZIP codes near 21640
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 21636 | Goldsboro, MD | 3.9 mi | 1,097 |
| 21644 | Ingleside, MD | 4.4 mi | 81 |
| 21607 | Barclay, MD | 4.9 mi | 597 |
| 19964 | Marydel, DE | 5.5 mi | 1,418 |
| 21670 | Templeville, MD | 5.5 mi | — |
| 21649 | Marydel, MD | 5.7 mi | 1,890 |
| 21639 | Greensboro, MD | 7.8 mi | 4,682 |
| 21660 | Ridgely, MD | 8.6 mi | 4,132 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 21640?
A typical home in ZIP code 21640 is worth about $396,100 (Zillow Home Value Index). The median household here earns $53,558 a year. See what buying here would cost per month, with Maryland average taxes and insurance filled in.
Monthly payment for a $396,100 homeWhat can a $53,558 income afford?Rental property numbers
About ZIP code 21640
What city is ZIP code 21640?
ZIP code 21640 is in Henderson, MD, in Caroline County.
What county is ZIP code 21640 in?
21640 is mainly in Caroline County, Maryland, and partly in Queen Anne's County.
What is the population of ZIP code 21640?
About 1,163 people live in ZIP code 21640, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 21640 in?
21640 is in Eastern Time (UTC−5). It observes daylight saving time.