Zip Code 21237 — Rosedale, MD

ZIP Code 21237 is associated with Rosedale, MD, in Baltimore County. The listed population estimate is 31,425; estimated density is 1,078.2 people per square mile. Among records with population estimates, it ranks #21 of 65 in Baltimore County and #78 of 470 in MD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.339380, -76.494560)

Data MetricLocal Statistic
Postal / Zip Code21237
Primary CityRosedale
State / ProvinceMD
CountyBaltimore
Total Population31,425
Population Density1,078.2 people/sq mi
TimezoneAmerica/New_York

How 21237 Compares

MetricZIP 21237Baltimore County recordsMD records
Population estimate31,4251,414,366 (sum)6,205,597 (sum)
Population Density1,078.2 /sq mi----
County population rank#21 of 65----
State population rank#78 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 21206Baltimore2.3 mi48,902
ZIP 21236Nottingham3.4 mi39,514
ZIP 21214Baltimore3.8 mi21,092
ZIP 21221Essex4.2 mi43,487
ZIP 21234Parkville4.3 mi66,334

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 →