Rio Illinois ZIP Codes

Rio holds a single ZIP code.

Every ZIP code in Rio

The complete list of Rio, Illinois ZIP codes with the county each falls in.
ZIP code	County
61472	Knox 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Rio codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Rio. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Rio ZIP code begins 614. Those first three digits identify the sectional center facility that processes mail for this part of Illinois. Statewide that range covers 73 ZIP codes, so Rio accounts for 1% of it.

Every Illinois ZIP prefix and the region it covers →

Area codes covering Rio

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 Rio occupies.

Rio Illinois area codes in full →

Where Rio's ZIP codes sit

Each point is one Rio ZIP code, plotted from its record coordinates.

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

Cities near Rio

The closest places to Rio with their own ZIP code list, nearest first.
City	Distance	ZIP codes
North Henderson Illinois ZIP codes	4.2 mi	1 ZIP code
Alpha Illinois ZIP codes	5.8 mi	1 ZIP code
Woodhull Illinois ZIP codes	6.2 mi	1 ZIP code
Henderson Illinois ZIP codes	6.4 mi	1 ZIP code
Wataga Illinois ZIP codes	8.7 mi	1 ZIP code
Alexis Illinois ZIP codes	8.8 mi	1 ZIP code
Oneida Illinois ZIP codes	9.4 mi	1 ZIP code
Galesburg Illinois ZIP codes	11 mi	2 ZIP codes

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