In which county is ZIP code 21284 located?

ZIP 21284 is listed under Baltimore County, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21284: Baltimore, MD

ZIP: 21284

County: Baltimore County

Coordinates: 39.43900, -76.59210

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Baltimore, MD postal area 21284. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Baltimore
ZIP Code	21284
County	Baltimore County
State	MD
Latitude / Longitude	39.43900, -76.59210
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 21284 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 21284 is commonly represented around 39.43900, -76.59210. These coordinates help identify the general area within Baltimore County, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21284 for mail delivery and general location reference in Baltimore County, MD.

Some addresses near Baltimore may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Baltimore within MD.

Frequently Asked Questions

What is the primary city for ZIP code 21284?

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

In which county is 21284 located?

ZIP code 21284 is situated within Baltimore County, MD.

What are the coordinates for 21284?

The approximate center point is 39.43900 (Latitude) and -76.59210 (Longitude).

Is ZIP code 21284 active?

This page lists ZIP 21284 as Listed based on the latest refresh date shown above.

Does ZIP 21284 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