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Zip Code 21401 — Annapolis, MD

21401 is a ZIP Code associated with Annapolis, MD, located within Anne Arundel. The postal region supports an estimated population of 38,629 residents across Data Pending housing units, with a population density of 748.3 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.989670, -76.550500)

Data Metric	Local Statistic
Postal / Zip Code	21401
Primary City	Annapolis
State / Province	MD
County	Anne Arundel
Total Population	38,629
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	748.3 people/sq mi
Timezone	America/New_York

How 21401 Compares

Metric	ZIP 21401	Anne Arundel County	MD State Average
Population	38,629	611,016	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	748.3 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21405	Annapolis	2.8 mi	495	N/A
Zip 21140	Riva	3.3 mi	4,417	N/A
Zip 21032	Crownsville	4.2 mi	8,850	N/A
Zip 21402	Annapolis	4.2 mi	4,303	N/A
Zip 21403	Annapolis	4.4 mi	32,681	N/A

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 →