In which county is ZIP code 21031 located?

ZIP 21031 is listed under Baltimore County, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 21031: Hunt Valley, MD

ZIP: 21031

County: Baltimore County

Coordinates: 39.48050, -76.65530

ZIP Type: Standard

Time Zone: Eastern Time (ET)

This profile provides an in-depth look at ZIP code 21031, serving Hunt Valley in MD. It lies in Baltimore County and supports delivery, planning, and address verification.

Primary City	Hunt Valley
ZIP Code	21031
County	Baltimore County
State	MD
Latitude / Longitude	39.48050, -76.65530
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 21031 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 21031 are listed as 39.48050 / -76.65530, useful for GPS and service checks in and around Hunt Valley, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 21031 for mail delivery and general location reference in Baltimore County, MD.

This ZIP may extend beyond the city core into nearby communities within Baltimore County.

Related ZIP Codes (Nearby)

Explore other postal codes near Hunt Valley within MD.

Frequently Asked Questions

What is the primary city for ZIP code 21031?

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

In which county is 21031 located?

ZIP code 21031 is situated within Baltimore County, MD.

What are the coordinates for 21031?

The approximate center point is 39.48050 (Latitude) and -76.65530 (Longitude).

Is ZIP code 21031 active?

This page lists ZIP 21031 as Listed based on the latest refresh date shown above.

Does ZIP 21031 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