Stillman Valley Illinois ZIP Codes
Stillman Valley holds a single ZIP code.
Every ZIP code in Stillman Valley
| ZIP code | County |
|---|---|
| 61084 | Ogle 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Stillman Valley codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Stillman Valley. 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 Stillman Valley 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 Stillman Valley accounts for 2% of it.
Every Illinois ZIP prefix and the region it covers →
Area codes covering Stillman Valley
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 Stillman Valley occupies.
Stillman Valley Illinois area codes in full →
Where Stillman Valley's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Stillman Valley
| City | Distance | ZIP codes |
|---|---|---|
| Davis Junction Illinois ZIP codes | 4.6 mi | 1 ZIP code |
| Byron Illinois ZIP codes | 4.6 mi | 1 ZIP code |
| Monroe Center Illinois ZIP codes | 9.5 mi | 1 ZIP code |
| Oregon Illinois ZIP codes | 10 mi | 1 ZIP code |
| Winnebago Illinois ZIP codes | 12 mi | 1 ZIP code |
| Leaf River Illinois ZIP codes | 12 mi | 1 ZIP code |
| Rockford Illinois ZIP codes | 12 mi | 14 ZIP codes |
| Mount Morris Illinois ZIP codes | 13 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.