Gardiner Maine ZIP Codes
Gardiner holds a single ZIP code.
Every ZIP code in Gardiner
| ZIP code | County |
|---|---|
| 04345 | Kennebec 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Gardiner codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Gardiner. 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 Gardiner ZIP code begins 043. Those first three digits identify the sectional center facility that processes mail for this part of Maine. Statewide that range covers 26 ZIP codes, so Gardiner accounts for 4% of it.
Every Maine ZIP prefix and the region it covers →
Area codes covering Gardiner
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Gardiner occupies.
Gardiner Maine area codes in full →
Where Gardiner's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Gardiner
| City | Distance | ZIP codes |
|---|---|---|
| Hallowell Maine ZIP codes | 6.5 mi | 1 ZIP code |
| Augusta Maine ZIP codes | 10 mi | 5 ZIP codes |
| Bath Maine ZIP codes | 18 mi | 1 ZIP code |
| Lewiston Maine ZIP codes | 20 mi | 3 ZIP codes |
| Brunswick Maine ZIP codes | 23 mi | 1 ZIP code |
| Auburn Maine ZIP codes | 24 mi | 3 ZIP codes |
| Waterville Maine ZIP codes | 25 mi | 2 ZIP codes |
| Freeport Maine ZIP codes | 28 mi | 3 ZIP codes |
Straight-line distance between place reference points, not driving distance.