ZIP Code 95658

95658 is one of California's ZIP codes, delivering to addresses in Newcastle, Placer County.

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

Where this code sits

95658 is part of the 956xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Newcastle.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 95658 delivers to without sharing its boundary.

ZIP codes nearest 95658

The ZIP codes whose reference points sit closest to 95658.
ZIP code	Distance	Delivers to
ZIP code 95663	2.4 mi	Penryn, CA
ZIP code 95603	4.2 mi	Auburn, CA
ZIP code 95604	4.5 mi	Auburn, CA
ZIP code 95650	5.0 mi	Loomis, CA
ZIP code 95664	7.4 mi	Pilot Hill, CA
ZIP code 95602	7.8 mi	Auburn, CA
ZIP code 95677	7.9 mi	Rocklin, CA
ZIP code 95765	8.0 mi	Rocklin, 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 95658, plotted from its record coordinates.

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

Scope ZIP code 95658. 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.