First three digits · California
ZIP Codes Starting with
32 ZIP codes start with 906, sorted at the Industry, CA (SCF 917) sectional center (USPS labeling list L005, effective October 1, 2026) in California: 18 residential ZIP codes across 2 counties and 14 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 906 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, 906, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 906 to the Industry, CA (SCF 917) facility. The last two digits pick the delivery area. By residents, the largest town names among the 906 ZIP codes are Whittier, Norwalk, Buena Park, La Habra, Montebello and Pico Rivera.
The same facility sorts 3 prefixes, 102 ZIP codes in all: 906, 917, 918.
Where are the 906 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 906
| County | ||||||
|---|---|---|---|---|---|---|
| 90601 | Whittier | Los Angeles County | 30,078 | 2,837 | $104k | $788k |
| 90602 | Whittier | Los Angeles County | 25,905 | 6,904 | $69k | $766k |
| 90603 | Whittier | Los Angeles County | 21,118 | 6,677 | $137k | $859k |
| 90604 | Whittier | Los Angeles County | 39,276 | 9,331 | $105k | $785k |
| 90605 | Whittier | Los Angeles County | 39,387 | 6,168 | $100k | $721k |
| 90606 | Whittier | Los Angeles County | 32,057 | 8,449 | $100k | $660k |
| 90607 | Whittier | Los Angeles County | PO Box or unique | – | – | – |
| 90608 | Whittier | Los Angeles County | PO Box or unique | – | – | – |
| 90609 | Whittier | Los Angeles County | PO Box or unique | – | – | – |
| 90610 | Whittier | Los Angeles County | PO Box or unique | – | – | – |
| 90620 | Buena Park | Orange County | 46,608 | 7,319 | $126k | $840k |
| 90621 | Buena Park | Orange County | 35,984 | 8,584 | $98k | $832k |
| 90622 | Buena Park | Orange County | PO Box or unique | – | – | – |
| 90623 | La Palma | Orange County | 15,545 | 8,569 | $117k | $980k |
| 90624 | Buena Park | Orange County | PO Box or unique | – | – | – |
| 90630 | Cypress | Orange County | 49,318 | 8,019 | $130k | $910k |
| 90631 | La Habra | Orange County | 68,309 | 4,888 | $104k | $819k |
| 90632 | La Habra | Orange County | PO Box or unique | – | – | – |
| 90633 | La Habra | Orange County | PO Box or unique | – | – | – |
| 90637 | La Mirada | Los Angeles County | PO Box or unique | – | – | – |
| 90638 | La Mirada | Los Angeles County | 45,933 | 5,927 | $110k | $827k |
| 90639 | La Mirada | Los Angeles County | 1,671 | 11,936 | – | – |
| 90640 | Montebello | Los Angeles County | 61,382 | 7,375 | $80k | $700k |
| 90650 | Norwalk | Los Angeles County | 99,900 | 10,089 | $100k | $645k |
| 90651 | Norwalk | Los Angeles County | PO Box or unique | – | – | – |
| 90652 | Norwalk | Los Angeles County | PO Box or unique | – | – | – |
| 90660 | Pico Rivera | Los Angeles County | 60,272 | 7,776 | $88k | $649k |
| 90661 | Pico Rivera | Los Angeles County | PO Box or unique | – | – | – |
| 90662 | Pico Rivera | Los Angeles County | PO Box or unique | – | – | – |
| 90670 | Santa Fe Springs | Los Angeles County | 17,851 | 2,146 | $89k | $660k |
| 90671 | Santa Fe Springs | Los Angeles County | PO Box or unique | – | – | – |
| 90680 | Stanton | Orange County | 31,991 | 12,536 | $86k | $603k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.