Stillwater Pennsylvania ZIP Codes
Stillwater holds a single ZIP code.
Every ZIP code in Stillwater
| ZIP code | County |
|---|---|
| 17878 | Columbia 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Stillwater codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Stillwater. 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 Stillwater ZIP code begins 178. Those first three digits identify the sectional center facility that processes mail for this part of Pennsylvania. Statewide that range covers 60 ZIP codes, so Stillwater accounts for 2% of it.
Every Pennsylvania ZIP prefix and the region it covers →
Area codes covering Stillwater
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 Stillwater occupies.
Stillwater Pennsylvania area codes in full →
Where Stillwater's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Stillwater
| City | Distance | ZIP codes |
|---|---|---|
| Benton Pennsylvania ZIP codes | 3.0 mi | 1 ZIP code |
| Orangeville Pennsylvania ZIP codes | 5.6 mi | 1 ZIP code |
| Millville Pennsylvania ZIP codes | 8.1 mi | 1 ZIP code |
| Berwick Pennsylvania ZIP codes | 9.4 mi | 1 ZIP code |
| Nescopeck Pennsylvania ZIP codes | 11 mi | 1 ZIP code |
| Bloomsburg Pennsylvania ZIP codes | 11 mi | 1 ZIP code |
| Shickshinny Pennsylvania ZIP codes | 12 mi | 1 ZIP code |
| Catawissa Pennsylvania ZIP codes | 15 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.