Zip Code 21405 — Annapolis, MD

ZIP Code 21405 is associated with Annapolis, MD, in Anne Arundel County. The listed population estimate is 495; estimated density is 186.8 people per square mile. Among records with population estimates, it ranks #34 of 36 in Anne Arundel County and #393 of 470 in MD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.029960, -76.549710)

Data MetricLocal Statistic
Postal / Zip Code21405
Primary CityAnnapolis
State / ProvinceMD
CountyAnne Arundel
Total Population495
Population Density186.8 people/sq mi
TimezoneAmerica/New_York

How 21405 Compares

MetricZIP 21405Anne Arundel County recordsMD records
Population estimate495611,016 (sum)6,205,597 (sum)
Population Density186.8 /sq mi----
County population rank#34 of 36----
State population rank#393 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 21401Annapolis2.8 mi38,629
ZIP 21032Crownsville2.9 mi8,850
ZIP 21012Arnold3.0 mi22,570
ZIP 21146Severna Park3.3 mi28,591
ZIP 21402Annapolis5.1 mi4,303

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 →