In which county is ZIP code 21078 located?

ZIP 21078 is listed under Harford, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21078: Havre De Grace, MD

ZIP: 21078

County: Harford

Coordinates: 39.55230, -76.11710

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 21078 in Havre De Grace, MD. We include verified county details for Harford plus key geographic references used for mapping and logistics.

Primary City	Havre De Grace
ZIP Code	21078
County	Harford
State	MD
Latitude / Longitude	39.55230, -76.11710
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 21078 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 21078 is commonly represented around 39.55230, -76.11710. These coordinates help identify the general area within Harford, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21078 for mail delivery and general location reference in Harford, MD.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Havre De Grace.

Related ZIP Codes (Nearby)

Explore other postal codes near Havre De Grace within MD.

Frequently Asked Questions

What is the primary city for ZIP code 21078?

The primary city for this ZIP code is Havre De Grace, located in MD.

In which county is 21078 located?

ZIP code 21078 is situated within Harford, MD.

What are the coordinates for 21078?

The approximate center point is 39.55230 (Latitude) and -76.11710 (Longitude).

Is ZIP code 21078 active?

This page lists ZIP 21078 as Listed based on the latest refresh date shown above.

Does ZIP 21078 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