Home > MD > Frederick County > Thurmont > Zip 21788

Zip Code 21788 — Thurmont, MD

ZIP Code 21788 is associated with Thurmont, MD, in Frederick County. The listed population estimate is 11,654; estimated density is 68.8 people per square mile. Among records with population estimates, it ranks #8 of 27 in Frederick County and #170 of 470 in MD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.594290, -77.419580)

Data MetricLocal Statistic
Postal / Zip Code21788
Primary CityThurmont
State / ProvinceMD
CountyFrederick
Total Population11,654
Population Density68.8 people/sq mi
TimezoneAmerica/New_York

How 21788 Compares

MetricZIP 21788Frederick County recordsMD records
Population estimate11,654300,100 (sum)6,205,597 (sum)
Population Density68.8 /sq mi----
County population rank#8 of 27----
State population rank#170 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 21778Rocky Ridge4.6 mi745
ZIP 21780Sabillasville6.2 mi2,159
ZIP 21798Woodsboro7.4 mi2,928
ZIP 21727Emmitsburg8.0 mi6,052
ZIP 21773Myersville8.1 mi5,826

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 →