Grass Valley California ZIP Codes

Grass Valley holds 2 ZIP codes, all inside one county and one postal prefix.

Every ZIP code in Grass Valley

The complete list of Grass Valley, California ZIP codes with the county each falls in.
ZIP code	County
95945	Nevada County
95949	Nevada County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Grass Valley codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Grass Valley. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Grass Valley ZIP code begins 959. Those first three digits identify the sectional center facility that processes mail for this part of California. Statewide that range covers 77 ZIP codes, so Grass Valley accounts for 3% of it.

Every California ZIP prefix and the region it covers →

Area codes covering Grass Valley

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Grass Valley occupies.

Grass Valley California area codes in full →

Where Grass Valley's ZIP codes sit

Each point is one Grass Valley ZIP code, plotted from its record coordinates.

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

Cities near Grass Valley

The closest places to Grass Valley with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Nevada City California ZIP codes	2.9 mi	1 ZIP code
Colfax California ZIP codes	10 mi	1 ZIP code
Wheatland California ZIP codes	22 mi	1 ZIP code
Auburn California ZIP codes	23 mi	3 ZIP codes
Lincoln California ZIP codes	27 mi	1 ZIP code
Marysville California ZIP codes	29 mi	1 ZIP code
Loomis California ZIP codes	29 mi	1 ZIP code
Rocklin California ZIP codes	31 mi	2 ZIP codes

Straight-line distance between place reference points, not driving distance.