ZIP Code 94598
94598 is one of California's ZIP codes, delivering to addresses in Walnut Creek, Contra Costa County.
- City
- Walnut Creek
- County
- Contra Costa County
- State
- California
- Prefix
- 945xx
Where this code sits
94598 is part of the 945xx range, the group of codes handled by one mail processing centre. Walnut Creek is served by 4 ZIP codes in total; the full list, with the county each falls in, is on the Walnut Creek page.
Walnut Creek California ZIP codes →
Area codes over the same ground
Postal and telephone geography are drawn separately, so these codes cover the area 94598 delivers to without sharing its boundary.
ZIP codes nearest 94598
| ZIP code | Distance | Delivers to |
|---|---|---|
| ZIP code 94596 | 1.9 mi | Walnut Creek, CA |
| ZIP code 94518 | 2.1 mi | Concord, CA |
| ZIP code 94597 | 2.5 mi | Walnut Creek, CA |
| ZIP code 94523 | 3.5 mi | Pleasant Hill, CA |
| ZIP code 94521 | 3.8 mi | Concord, CA |
| ZIP code 94595 | 3.9 mi | Walnut Creek, CA |
| ZIP code 94522 | 4.1 mi | Concord, CA |
| ZIP code 94524 | 4.1 mi | Concord, 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.
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope ZIP code 94598. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.