Montclair California ZIP Codes
Montclair holds a single ZIP code.
Every ZIP code in Montclair
| ZIP code | County |
|---|---|
| 91763 | San Bernardino 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Montclair codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Montclair. 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 Montclair ZIP code begins 917. Those first three digits identify the sectional center facility that processes mail for this part of California. Statewide that range covers 64 ZIP codes, so Montclair accounts for 2% of it.
Every California ZIP prefix and the region it covers →
Area codes covering Montclair
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 Montclair occupies.
Montclair California area codes in full →
Where Montclair's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Montclair
| City | Distance | ZIP codes |
|---|---|---|
| Pomona California ZIP codes | 3.7 mi | 4 ZIP codes |
| Upland California ZIP codes | 3.8 mi | 3 ZIP codes |
| Claremont California ZIP codes | 3.8 mi | 1 ZIP code |
| La Verne California ZIP codes | 5.3 mi | 1 ZIP code |
| Ontario California ZIP codes | 5.8 mi | 4 ZIP codes |
| San Dimas California ZIP codes | 6.8 mi | 1 ZIP code |
| Chino California ZIP codes | 6.9 mi | 2 ZIP codes |
| Diamond Bar California ZIP codes | 8.4 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.