Home > MD > Carroll County > Sykesville > Zip 21784

Zip Code 21784 — Sykesville, MD

ZIP Code 21784 is associated with Sykesville, MD, in Carroll County. The listed population estimate is 39,258; estimated density is 270.0 people per square mile. Among records with population estimates, it ranks #1 of 9 in Carroll County and #45 of 470 in MD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.400870, -76.972600)

Data MetricLocal Statistic
Postal / Zip Code21784
Primary CitySykesville
State / ProvinceMD
CountyCarroll
Total Population39,258
Population Density270.0 people/sq mi
TimezoneAmerica/New_York

How 21784 Compares

MetricZIP 21784Carroll County recordsMD records
Population estimate39,258158,322 (sum)6,205,597 (sum)
Population Density270.0 /sq mi----
County population rank#1 of 9----
State population rank#45 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 21104Marriottsville5.0 mi6,052
ZIP 21723Cooksville5.4 mi669
ZIP 21797Woodbine7.0 mi8,643
ZIP 21794West Friendship7.2 mi2,192
ZIP 21048Finksburg7.3 mi10,481

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 →