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Zip Code 21660 — Ridgely, MD

21660 is a ZIP Code associated with Ridgely, MD, located within Caroline. The postal region supports an estimated population of 4,132 residents across Data Pending housing units, with a population density of 48.8 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.955340, -75.888390)

Data Metric	Local Statistic
Postal / Zip Code	21660
Primary City	Ridgely
State / Province	MD
County	Caroline
Total Population	4,132
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	48.8 people/sq mi
Timezone	America/New_York

How 21660 Compares

Metric	ZIP 21660	Caroline County	MD State Average
Population	4,132	32,942	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	48.8 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21641	Hillsboro	3.9 mi	127	N/A
Zip 21639	Greensboro	5.2 mi	4,682	N/A
Zip 21657	Queen Anne	5.5 mi	1,354	N/A
Zip 21636	Goldsboro	6.9 mi	1,097	N/A
Zip 21629	Denton	7.3 mi	10,252	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 →