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Zip Code 21661 — Rock Hall, MD

ZIP Code 21661 is associated with Rock Hall, MD, in Kent County. The listed population estimate is 2,613; estimated density is 30.5 people per square mile. Among records with population estimates, it ranks #2 of 9 in Kent County and #289 of 470 in MD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.129050, -76.219670)

Data MetricLocal Statistic
Postal / Zip Code21661
Primary CityRock Hall
State / ProvinceMD
CountyKent
Total Population2,613
Population Density30.5 people/sq mi
TimezoneAmerica/New_York

How 21661 Compares

MetricZIP 21661Kent County recordsMD records
Population estimate2,61324,362 (sum)6,205,597 (sum)
Population Density30.5 /sq mi----
County population rank#2 of 9----
State population rank#289 of 470----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in MD

ZIP CodeCityDistancePopulation estimate
ZIP 21620Chestertown8.9 mi13,810
ZIP 21617Centreville11.2 mi10,428
ZIP 21056Gibson Island12.0 mi291
ZIP 21619Chester12.6 mi6,152
ZIP 21638Grasonville12.7 mi5,420

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 →