Franklin Grove Illinois ZIP Codes
Franklin Grove holds a single ZIP code.
Every ZIP code in Franklin Grove
| ZIP code | County |
|---|---|
| 61031 | Lee 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Franklin Grove codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Franklin Grove. 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 Franklin Grove ZIP code begins 610. Those first three digits identify the sectional center facility that processes mail for this part of Illinois. Statewide that range covers 66 ZIP codes, so Franklin Grove accounts for 2% of it.
Every Illinois ZIP prefix and the region it covers →
Area codes covering Franklin Grove
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 Franklin Grove occupies.
Franklin Grove Illinois area codes in full →
Where Franklin Grove's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Franklin Grove
| City | Distance | ZIP codes |
|---|---|---|
| Ashton Illinois ZIP codes | 4.4 mi | 1 ZIP code |
| Amboy Illinois ZIP codes | 8.9 mi | 1 ZIP code |
| Dixon Illinois ZIP codes | 9.1 mi | 1 ZIP code |
| Oregon Illinois ZIP codes | 12 mi | 1 ZIP code |
| West Brooklyn Illinois ZIP codes | 13 mi | 1 ZIP code |
| Rochelle Illinois ZIP codes | 13 mi | 1 ZIP code |
| Sublette Illinois ZIP codes | 14 mi | 1 ZIP code |
| Steward Illinois ZIP codes | 14 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.