In which county is ZIP code 20838 located?

ZIP 20838 is listed under Montgomery County, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 20838: Barnesville, MD

ZIP: 20838

County: Montgomery County

Coordinates: 39.22330, -77.37640

ZIP Type: Standard

Time Zone: Eastern Time (ET)

This profile provides an in-depth look at ZIP code 20838, serving Barnesville in MD. It lies in Montgomery County and supports delivery, planning, and address verification.

Primary City	Barnesville
ZIP Code	20838
County	Montgomery County
State	MD
Latitude / Longitude	39.22330, -77.37640
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 20838 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 20838 are listed as 39.22330 / -77.37640, useful for GPS and service checks in and around Barnesville, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 20838 for mail delivery and general location reference in Montgomery County, MD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Barnesville within MD.

Frequently Asked Questions

What is the primary city for ZIP code 20838?

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

In which county is 20838 located?

ZIP code 20838 is situated within Montgomery County, MD.

What are the coordinates for 20838?

The approximate center point is 39.22330 (Latitude) and -77.37640 (Longitude).

Is ZIP code 20838 active?

This page lists ZIP 20838 as Listed based on the latest refresh date shown above.

Does ZIP 20838 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