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Zip Code 21234 — Parkville, MD

ZIP Code 21234 is associated with Parkville, MD, in Baltimore County. The listed population estimate is 66,334; estimated density is 1,917.9 people per square mile. Among records with population estimates, it ranks #1 of 65 in Baltimore County and #2 of 470 in MD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.395000, -76.532520)

Data MetricLocal Statistic
Postal / Zip Code21234
Primary CityParkville
State / ProvinceMD
CountyBaltimore
Total Population66,334
Population Density1,917.9 people/sq mi
TimezoneAmerica/New_York

How 21234 Compares

MetricZIP 21234Baltimore County recordsMD records
Population estimate66,3341,414,366 (sum)6,205,597 (sum)
Population Density1,917.9 /sq mi----
County population rank#1 of 65----
State population rank#2 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 21286Towson2.6 mi21,853
ZIP 21236Nottingham2.6 mi39,514
ZIP 21214Baltimore3.4 mi21,092
ZIP 21239Baltimore3.6 mi27,346
ZIP 21206Baltimore3.9 mi48,902

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 →