In which county is ZIP code 20818 located?

ZIP 20818 is listed under Montgomery County, MD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 20818: Cabin John, MD

ZIP: 20818

County: Montgomery County

Coordinates: 38.97430, -77.15910

ZIP Type: Standard

Time Zone: Eastern Time (ET)

This profile provides an in-depth look at ZIP code 20818, serving Cabin John in MD. It lies in Montgomery County and supports delivery, planning, and address verification.

Primary City	Cabin John
ZIP Code	20818
County	Montgomery County
State	MD
Latitude / Longitude	38.97430, -77.15910
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 20818 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 20818 is commonly represented around 38.97430, -77.15910. These coordinates help identify the general area within Montgomery County, MD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 20818 for mail delivery and general location reference in Montgomery County, MD.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Cabin John.

Related ZIP Codes (Nearby)

Explore other postal codes near Cabin John within MD.

Frequently Asked Questions

What is the primary city for ZIP code 20818?

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

In which county is 20818 located?

ZIP code 20818 is situated within Montgomery County, MD.

What are the coordinates for 20818?

The approximate center point is 38.97430 (Latitude) and -77.15910 (Longitude).

Is ZIP code 20818 active?

This page lists ZIP 20818 as Listed based on the latest refresh date shown above.

Does ZIP 20818 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