ZIP Code 95603

95603 is one of California's ZIP codes, delivering to addresses in Auburn, Placer County.

City: Auburn
County: Placer County
State: California
Prefix: 956xx

Where this code sits

95603 is part of the 956xx range, the group of codes handled by one mail processing centre. Auburn is served by 3 ZIP codes in total; the full list, with the county each falls in, is on the Auburn page.

Auburn California ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 95603 delivers to without sharing its boundary.

ZIP codes nearest 95603

The ZIP codes whose reference points sit closest to 95603.
ZIP code	Distance	Delivers to
ZIP code 95604	0.9 mi	Auburn, CA
ZIP code 95658	4.2 mi	Newcastle, CA
ZIP code 95602	5.0 mi	Auburn, CA
ZIP code 95614	5.5 mi	Cool, CA
ZIP code 95663	6.5 mi	Penryn, CA
ZIP code 95722	6.9 mi	Meadow Vista, CA
ZIP code 95664	7.3 mi	Pilot Hill, CA
ZIP code 95703	7.8 mi	Applegate, CA

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 95603, plotted from its record coordinates.

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

Scope ZIP code 95603. 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.