In which county is ZIP code 21154 located?

ZIP 21154 is listed under Harford, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21154: Street, MD

ZIP: 21154

County: Harford

Coordinates: 39.65740, -76.37130

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 21154 in Street, MD. We include verified county details for Harford plus key geographic references used for mapping and logistics.

Primary City	Street
ZIP Code	21154
County	Harford
State	MD
Latitude / Longitude	39.65740, -76.37130
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 21154 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 21154 are listed as 39.65740 / -76.37130, useful for GPS and service checks in and around Street, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21154 for mail delivery and general location reference in Harford, MD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Street within MD.

Frequently Asked Questions

What is the primary city for ZIP code 21154?

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

In which county is 21154 located?

ZIP code 21154 is situated within Harford, MD.

What are the coordinates for 21154?

The approximate center point is 39.65740 (Latitude) and -76.37130 (Longitude).

Is ZIP code 21154 active?

This page lists ZIP 21154 as Listed based on the latest refresh date shown above.

Does ZIP 21154 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