First three digits · California
ZIP Codes Starting with
64 ZIP codes start with 917, sorted at the Industry, CA (SCF 917) sectional center (USPS labeling list L005, effective October 1, 2026) in California: 46 residential ZIP codes across 3 counties and 18 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 917 mean?
The first digit, 9, is one of ten national areas (Alaska, California, Hawaii, Oregon, Washington, American Samoa, Guam, Northern Mariana Islands, Marshall Islands, Micronesia, Palau and Armed Forces Pacific). The first three, 917, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 917 to the Industry, CA (SCF 917) facility. The last two digits pick the delivery area. By residents, the largest town names among the 917 ZIP codes are Ontario, Rancho Cucamonga, Pomona, West Covina, La Puente and Chino.
The same facility sorts 3 prefixes, 102 ZIP codes in all: 906, 917, 918.
Where are the 917 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 917
| County | ||||||
|---|---|---|---|---|---|---|
| 91701 | Rancho Cucamonga | San Bernardino County | 39,287 | 5,315 | $114k | $795k |
| 91702 | Azusa | Los Angeles County | 60,903 | 937 | $93k | $635k |
| 91706 | Baldwin Park | Los Angeles County | 71,082 | 5,254 | $81k | $609k |
| 91708 | Chino | San Bernardino County | 19,213 | 2,380 | $109k | $689k |
| 91709 | Chino Hills | San Bernardino County | 78,006 | 1,741 | $126k | $876k |
| 91710 | Chino | San Bernardino County | 78,754 | 3,577 | $103k | $687k |
| 91711 | Claremont | Los Angeles County | 37,529 | 2,513 | $126k | $894k |
| 91714 | City Of Industry | Los Angeles County | PO Box or unique | – | – | – |
| 91715 | City Of Industry | Los Angeles County | PO Box or unique | – | – | – |
| 91716 | City Of Industry | Los Angeles County | PO Box or unique | – | – | – |
| 91722 | Covina | Los Angeles County | 35,099 | 8,509 | $102k | $654k |
| 91723 | Covina | Los Angeles County | 17,733 | 7,601 | $94k | $717k |
| 91724 | Covina | Los Angeles County | 28,352 | 4,547 | $103k | $783k |
| 91729 | Rancho Cucamonga | San Bernardino County | PO Box or unique | – | – | – |
| 91730 | Rancho Cucamonga | San Bernardino County | 71,613 | 5,216 | $92k | $616k |
| 91731 | El Monte | Los Angeles County | 27,620 | 7,278 | $62k | $636k |
| 91732 | El Monte | Los Angeles County | 57,431 | 12,650 | $75k | $644k |
| 91733 | South El Monte | Los Angeles County | 41,255 | 6,115 | $68k | $622k |
| 91734 | El Monte | Los Angeles County | PO Box or unique | – | – | – |
| 91735 | El Monte | Los Angeles County | PO Box or unique | – | – | – |
| 91737 | Rancho Cucamonga | San Bernardino County | 22,958 | 2,275 | $122k | $878k |
| 91739 | Rancho Cucamonga | San Bernardino County | 41,673 | 1,466 | $143k | $895k |
| 91740 | Glendora | Los Angeles County | 26,168 | 5,224 | $99k | $787k |
| 91741 | Glendora | Los Angeles County | 26,071 | 1,280 | $127k | $947k |
| 91743 | Guasti | San Bernardino County | PO Box or unique | – | – | – |
| 91744 | La Puente | Los Angeles County | 76,942 | 8,852 | $94k | $611k |
| 91745 | Hacienda Heights | Los Angeles County | 54,351 | 4,197 | $109k | $821k |
| 91746 | La Puente | Los Angeles County | 28,387 | 4,887 | $87k | $633k |
| 91747 | La Puente | Los Angeles County | PO Box or unique | – | – | – |
| 91748 | Rowland Heights | Los Angeles County | 42,463 | 2,995 | $83k | $831k |
| 91749 | La Puente | Los Angeles County | PO Box or unique | – | – | – |
| 91750 | La Verne | Los Angeles County | 32,692 | 1,764 | $104k | $815k |
| 91752 | Mira Loma | Riverside County | 37,983 | 2,518 | $115k | $690k |
| 91754 | Monterey Park | Los Angeles County | 32,248 | 7,135 | $86k | $877k |
| 91755 | Monterey Park | Los Angeles County | 26,810 | 8,511 | $76k | $840k |
| 91756 | Monterey Park | Los Angeles County | PO Box or unique | – | – | – |
| 91758 | Ontario | San Bernardino County | PO Box or unique | – | – | – |
| 91759 | Mt Baldy | Los Angeles County | 341 | 4 | $123k | $375k |
| 91761 | Ontario | San Bernardino County | 62,935 | 2,209 | $101k | $635k |
| 91762 | Ontario | San Bernardino County | 64,235 | 4,492 | $84k | $606k |
| 91763 | Montclair | San Bernardino County | 37,700 | 7,113 | $79k | $570k |
| 91764 | Ontario | San Bernardino County | 56,270 | 7,116 | $82k | $566k |
| 91765 | Diamond Bar | Los Angeles County | 44,502 | 2,397 | $106k | $915k |
| 91766 | Pomona | Los Angeles County | 69,327 | 6,865 | $82k | $599k |
| 91767 | Pomona | Los Angeles County | 49,152 | 8,646 | $79k | $599k |
| 91768 | Pomona | Los Angeles County | 34,200 | 4,171 | $76k | $573k |
| 91769 | Pomona | Los Angeles County | PO Box or unique | – | – | – |
| 91770 | Rosemead | Los Angeles County | 58,382 | 8,949 | $75k | $790k |
| 91771 | Rosemead | Los Angeles County | PO Box or unique | – | – | – |
| 91772 | Rosemead | Los Angeles County | PO Box or unique | – | – | – |
| 91773 | San Dimas | Los Angeles County | 33,598 | 2,243 | $105k | $801k |
| 91775 | San Gabriel | Los Angeles County | 23,672 | 7,639 | $119k | $1.09M |
| 91776 | San Gabriel | Los Angeles County | 36,952 | 11,060 | $82k | $860k |
| 91778 | San Gabriel | Los Angeles County | PO Box or unique | – | – | – |
| 91780 | Temple City | Los Angeles County | 35,588 | 9,256 | $104k | $950k |
| 91784 | Upland | San Bernardino County | 26,886 | 2,942 | $154k | $892k |
| 91785 | Upland | San Bernardino County | PO Box or unique | – | – | – |
| 91786 | Upland | San Bernardino County | 55,829 | 6,243 | $93k | $642k |
| 91788 | Walnut | Los Angeles County | PO Box or unique | – | – | – |
| 91789 | Walnut | Los Angeles County | 40,298 | 2,540 | $126k | $975k |
| 91790 | West Covina | Los Angeles County | 44,710 | 7,768 | $103k | $771k |
| 91791 | West Covina | Los Angeles County | 33,028 | 4,973 | $102k | $844k |
| 91792 | West Covina | Los Angeles County | 30,629 | 7,972 | $95k | $696k |
| 91793 | West Covina | Los Angeles County | PO Box or unique | – | – | – |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.