Post Falls Idaho ZIP Codes
Post Falls holds 2 ZIP codes, all inside one county and one postal prefix.
Every ZIP code in Post Falls
| ZIP code | County |
|---|---|
| 83854 | Kootenai County |
| 83877 | Kootenai 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Post Falls codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Post Falls. 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 Post Falls ZIP code begins 838. Those first three digits identify the sectional center facility that processes mail for this part of Idaho. Statewide that range covers 64 ZIP codes, so Post Falls accounts for 3% of it.
Every Idaho ZIP prefix and the region it covers →
Area codes covering Post Falls
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 Post Falls occupies.
Post Falls Idaho area codes in full →
Where Post Falls's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Post Falls
| City | Distance | ZIP codes |
|---|---|---|
| Rathdrum Idaho ZIP codes | 5.3 mi | 1 ZIP code |
| Coeur d'Alene Idaho ZIP codes | 7.1 mi | 3 ZIP codes |
| Hayden Idaho ZIP codes | 7.3 mi | 1 ZIP code |
| Spirit Lake Idaho ZIP codes | 17 mi | 1 ZIP code |
| Harrison Idaho ZIP codes | 19 mi | 1 ZIP code |
| Athol Idaho ZIP codes | 19 mi | 1 ZIP code |
| Worley Idaho ZIP codes | 23 mi | 1 ZIP code |
| Plummer Idaho ZIP codes | 28 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.