Codes.zone

Cisco Illinois ZIP Codes

Cisco holds a single ZIP code.

Every ZIP code in Cisco

The complete list of Cisco, Illinois ZIP codes with the county each falls in.
ZIP codeCounty
61830Piatt 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Cisco codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Cisco. 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 Cisco ZIP code begins 618. Those first three digits identify the sectional center facility that processes mail for this part of Illinois. Statewide that range covers 62 ZIP codes, so Cisco accounts for 2% of it.

Every Illinois ZIP prefix and the region it covers →

Area codes covering Cisco

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 Cisco occupies.

Cisco Illinois area codes in full →

Where Cisco's ZIP codes sit

Each point is one Cisco ZIP code, plotted from its record coordinates.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Cities near Cisco

The closest places to Cisco with their own ZIP code list, nearest first.
CityDistanceZIP codes
Argenta Illinois ZIP codes5.3 mi1 ZIP code
Weldon Illinois ZIP codes7.7 mi1 ZIP code
Monticello Illinois ZIP codes8.1 mi1 ZIP code
Cerro Gordo Illinois ZIP codes8.5 mi1 ZIP code
De Land Illinois ZIP codes8.8 mi1 ZIP code
Oreana Illinois ZIP codes9.1 mi1 ZIP code
Bement Illinois ZIP codes10 mi1 ZIP code
Maroa Illinois ZIP codes12 mi1 ZIP code

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