Home > MD > Caroline County > Hillsboro > Zip 21641

Zip Code 21641 — Hillsboro, MD

21641 is a ZIP Code associated with Hillsboro, MD, located within Caroline. The postal region supports an estimated population of 127 residents across Data Pending housing units, with a population density of 362.4 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.916960, -75.941610)

Data Metric	Local Statistic
Postal / Zip Code	21641
Primary City	Hillsboro
State / Province	MD
County	Caroline
Total Population	127
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	362.4 people/sq mi
Timezone	America/New_York

How 21641 Compares

Metric	ZIP 21641	Caroline County	MD State Average
Population	127	32,942	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	362.4 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21657	Queen Anne	3.6 mi	1,354	N/A
Zip 21660	Ridgely	3.9 mi	4,132	N/A
Zip 21625	Cordova	4.3 mi	1,766	N/A
Zip 21629	Denton	7.2 mi	10,252	N/A
Zip 21679	Wye Mills	7.9 mi	306	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 →