ZIP Code 21405: Annapolis, MD
County: Anne Arundel County
Coordinates: 39.03050, -76.55150
ZIP Type: Standard
Time Zone: Eastern Time (ET)
Get a reliable snapshot of the Annapolis, MD postal area 21405. This page summarizes county, coordinates, and local facts to help with services and location research.
| Primary City | Annapolis |
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| ZIP Code | 21405 |
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| County | Anne Arundel County |
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| State | MD |
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| Latitude / Longitude | 39.03050, -76.55150 |
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| ZIP Type | Standard |
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| Time Zone | Eastern Time (ET) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 21405 (not an exact boundary).
Geographic & Administrative Context
For mapping and verification, 21405 is commonly represented around 39.03050, -76.55150. These coordinates help identify the general area within Anne Arundel County, MD.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21405 for mail delivery and general location reference in
Anne Arundel County,
MD.
Some addresses near Annapolis may share this ZIP due to delivery routing and local service areas.
Related ZIP Codes (Nearby)
Explore other postal codes near Annapolis within MD.
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Frequently Asked Questions
What is the primary city for ZIP code 21405?
The primary city for this ZIP code is Annapolis, located in MD.
In which county is 21405 located?
ZIP code 21405 is situated within Anne Arundel County, MD.
What are the coordinates for 21405?
The approximate center point is 39.03050 (Latitude) and -76.55150 (Longitude).
Is ZIP code 21405 active?
This page lists ZIP 21405 as Listed based on the latest refresh date shown above.
Does ZIP 21405 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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Methodology & Data Notes
How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.
Page updated: 2026-01-08