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Zip Code 21640 — Henderson, MD

21640 is a ZIP Code associated with Henderson, MD, located within Caroline. The postal region supports an estimated population of 1,163 residents across Data Pending housing units, with a population density of 17.5 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.070360, -75.825330)

Data Metric	Local Statistic
Postal / Zip Code	21640
Primary City	Henderson
State / Province	MD
County	Caroline
Total Population	1,163
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	17.5 people/sq mi
Timezone	America/New_York

How 21640 Compares

Metric	ZIP 21640	Caroline County	MD State Average
Population	1,163	32,942	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	17.5 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21636	Goldsboro	3.4 mi	1,097	N/A
Zip 21644	Ingleside	4.2 mi	81	N/A
Zip 21607	Barclay	4.7 mi	597	N/A
Zip 21649	Marydel	5.3 mi	1,890	N/A
Zip 21639	Greensboro	7.5 mi	4,682	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →