How Rhode Island ZIP codes are numbered

028xx–029xx

The first three digits identify the sectional center facility that processes mail for a region, so a Rhode Island ZIP code can be placed geographically from its prefix alone. Each row names the city holding the most codes in that prefix.

Rhode Island three-digit ZIP prefixes, the codes in each, and the city that holds the most of them.
Prefix	ZIP codes	Main area
028xx	69	Warwick
029xx	21	Providence

Where Rhode Island's communities sit

Each point is a Rhode Island community with a published ZIP code list, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

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

Rhode Island cities by ZIP code count

largest 25

Area codes serving Rhode Island

Scope every ZIP code recorded in Rhode Island. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. The map outline is a convex envelope of published places, not a state boundary.