In which county is ZIP code 21221 located?

ZIP 21221 is listed under Baltimore County, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21221: Essex, MD

ZIP: 21221

County: Baltimore County

Coordinates: 39.30860, -76.45330

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 21221 in Essex, MD. We include verified county details for Baltimore County plus key geographic references used for mapping and logistics.

Primary City	Essex
ZIP Code	21221
County	Baltimore County
State	MD
Latitude / Longitude	39.30860, -76.45330
ZIP Type	Standard
Time Zone	Eastern Time (ET)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 21221 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 21221 are listed as 39.30860 / -76.45330, useful for GPS and service checks in and around Essex, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21221 for mail delivery and general location reference in Baltimore County, MD.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Essex.

Related ZIP Codes (Nearby)

Explore other postal codes near Essex within MD.

Frequently Asked Questions

What is the primary city for ZIP code 21221?

The primary city for this ZIP code is Essex, located in MD.

In which county is 21221 located?

ZIP code 21221 is situated within Baltimore County, MD.

What are the coordinates for 21221?

The approximate center point is 39.30860 (Latitude) and -76.45330 (Longitude).

Is ZIP code 21221 active?

This page lists ZIP 21221 as Listed based on the latest refresh date shown above.

Does ZIP 21221 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

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