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Rockford Illinois ZIP Codes

Rockford holds 14 ZIP codes, all inside one county and one postal prefix.

Every ZIP code in Rockford

The complete list of Rockford, Illinois ZIP codes with the county each falls in.
ZIP codeCounty
61101Winnebago County
61102Winnebago County
61103Winnebago County
61104Winnebago County
61105Winnebago County
61106Winnebago County
61107Winnebago County
61108Winnebago County
61109Winnebago County
61110Winnebago County
61112Winnebago County
61114Winnebago County
61125Winnebago County
61126Winnebago County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Rockford codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Rockford. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Rockford ZIP code begins 611. Those first three digits identify the sectional center facility that processes mail for this part of Illinois. Statewide that range covers 19 ZIP codes, so Rockford accounts for 74% of it.

Every Illinois ZIP prefix and the region it covers →

Area codes covering Rockford

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Rockford occupies.

Rockford Illinois area codes in full →

Where Rockford's ZIP codes sit

Each point is one Rockford ZIP code, 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

Cities near Rockford

The closest places to Rockford with their own ZIP code list, nearest first.
CityDistanceZIP codes
Cherry Valley Illinois ZIP codes4.8 mi1 ZIP code
Loves Park Illinois ZIP codes6.4 mi4 ZIP codes
Machesney Park Illinois ZIP codes7.7 mi1 ZIP code
Winnebago Illinois ZIP codes8.7 mi1 ZIP code
Belvidere Illinois ZIP codes9.0 mi1 ZIP code
Davis Junction Illinois ZIP codes10 mi1 ZIP code
Caledonia Illinois ZIP codes12 mi1 ZIP code
Monroe Center Illinois ZIP codes12 mi1 ZIP code

Straight-line distance between place reference points, not driving distance.