Zip Code 21084 — Jarrettsville, MD

ZIP Code 21084 is associated with Jarrettsville, MD, in Harford County. The listed population estimate is 7,070; estimated density is 114.9 people per square mile. Among records with population estimates, it ranks #10 of 20 in Harford County and #208 of 470 in MD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.616590, -76.463170)

Data MetricLocal Statistic
Postal / Zip Code21084
Primary CityJarrettsville
State / ProvinceMD
CountyHarford
Total Population7,070
Population Density114.9 people/sq mi
TimezoneAmerica/New_York

How 21084 Compares

MetricZIP 21084Harford County recordsMD records
Population estimate7,070262,768 (sum)6,205,597 (sum)
Population Density114.9 /sq mi----
County population rank#10 of 20----
State population rank#208 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 21050Forest Hill4.3 mi17,466
ZIP 21132Pylesville5.8 mi3,160
ZIP 21154Street6.0 mi6,544
ZIP 21161White Hall6.2 mi5,221
ZIP 21047Fallston6.3 mi13,852

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 →