ZIP Code 20905

20905 is one of Maryland's ZIP codes, delivering to addresses in Silver Spring, Montgomery County.

City

Silver Spring

County

Montgomery County

State

Maryland

Prefix

209xx

Where this code sits

20905 is part of the 209xx range, the group of codes handled by one mail processing centre. Silver Spring is served by 16 ZIP codes in total; the full list, with the county each falls in, is on the Silver Spring page.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 20905 delivers to without sharing its boundary.

ZIP codes nearest 20905

The ZIP codes whose reference points sit closest to 20905.
ZIP code	Distance	Delivers to
ZIP code 20868	1.9 mi	Spencerville, MD
ZIP code 20861	2.6 mi	Ashton, MD
ZIP code 20860	2.7 mi	Sandy Spring, MD
ZIP code 20904	3.4 mi	Silver Spring, MD
ZIP code 20906	3.7 mi	Silver Spring, MD
ZIP code 20866	4.2 mi	Burtonsville, MD
ZIP code 20830	4.3 mi	Olney, MD
ZIP code 20832	4.5 mi	Olney, MD

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 20905, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 20905. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.