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Zip Code 21405 — Annapolis, MD

21405 is a ZIP Code associated with Annapolis, MD, located within Anne Arundel. The postal region supports an estimated population of 495 residents across Data Pending housing units, with a population density of 186.8 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.029960, -76.549710)

Data Metric	Local Statistic
Postal / Zip Code	21405
Primary City	Annapolis
State / Province	MD
County	Anne Arundel
Total Population	495
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	186.8 people/sq mi
Timezone	America/New_York

How 21405 Compares

Metric	ZIP 21405	Anne Arundel County	MD State Average
Population	495	611,016	6,205,597
Median Income	Data Pending	N/A	N/A
Population Density	186.8 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 21401	Annapolis	2.8 mi	38,629	N/A
Zip 21032	Crownsville	2.9 mi	8,850	N/A
Zip 21012	Arnold	3.0 mi	22,570	N/A
Zip 21146	Severna Park	3.3 mi	28,591	N/A
Zip 21402	Annapolis	5.1 mi	4,303	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 →