Riverside ZIP codes: US ZIP code list for Riverside, California (CA)
Quick answer
Riverside, California has 8 US ZIP codes, running 92501 to 92509 inside Riverside County. Each carries the same 8.75% combined sales tax rate. ZIP boundaries are postal delivery routes, not tax boundaries — a code that crosses a city or district line can hold more than one rate, so destination-based sellers should validate by full street address.
- ZIP codes
- 8Median covered metro: 12
- Number span
- 992501 to 92509
- Sorting prefixes
- 925USPS sectional centers
- Sales tax
- 8.75%Same in every listed code
Riverside ZIP code footprint
How Riverside's ZIP footprint compares with national norms.
8 ZIP codes are listed for Riverside, covering a population of 314,998. They span 9 numbers, 92501 through 92509. The median covered metro on this site lists 12 codes; Riverside ranks 74 of 94 by count. Large metros carry more codes because USPS splits a delivery area once carrier volume outgrows one route cluster, not because the city is geographically bigger.
All 8 codes share the 925 prefix. That first trio is the sectional center facility — the USPS plant that sorts mail for the region — so every piece addressed to Riverside passes through one facility. The range runs 92501 to 92509.
ZIP boundaries are carrier routes, not city limits. USPS redraws them when delivery volume shifts; California redraws tax and municipal lines on a different schedule entirely. A Riverside mailing address does not prove an address sits inside Riverside city limits, and a single code can straddle the boundary.
ZIP codes in Riverside
All within Riverside County, California.
Why ZIP-based rate lookup is unreliable
USPS redraws ZIP codes when carrier routes change. Tax jurisdictions move with annexations, county lines and voter-approved districts. The two never line up. In California, local jurisdictions set their own increments, so remote sellers should validate the full delivery address against the California Department of Tax and Fee Administration lookup at the time of sale.
Frequently asked questions
Common questions about this area.
- How many ZIP codes does Riverside have?
- 8. They run from 92501 to 92509 across 1 sectional center prefix (925), spanning 9 numbers.
- What is the first ZIP code in Riverside, CA?
- 92501 is the lowest-numbered code serving Riverside. Numbering runs roughly northeast to west nationally, so Riverside's 925 prefix reflects its position in the California sorting network, not its size.
- Do all Riverside ZIP codes have the same sales tax rate?
- Inside Riverside city limits, yes — 8.75% applies. A code that extends past the city line can carry a different rate on part of its territory. Validate by street address, not ZIP, when the sale is destination-based. Confirm current rates with your state revenue agency before filing.
Riverside sales tax breakdown and calculator
More Riverside data
Other Riverside datasets on this site.
- Riverside population and income
- Riverside sales tax rate
- Riverside property tax
- Riverside cost of living
- Riverside home values and rent
- Riverside crime rates
- Riverside public schools
- Riverside weather normals
- Riverside commute times
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