First three digits · Idaho
ZIP Codes Starting with
39 ZIP codes start with 833, sorted at the Boise, ID (SCF 836) sectional center (USPS labeling list L005, effective October 1, 2026) in Idaho: 37 residential ZIP codes across 9 counties and 2 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 833 mean?
The first digit, 8, is one of ten national areas (Arizona, Colorado, Idaho, New Mexico, Nevada, Utah and Wyoming). The first three, 833, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 833 to the Boise, ID (SCF 836) facility. The last two digits pick the delivery area. By residents, the largest town names among the 833 ZIP codes are Twin Falls, Jerome, Burley, Hailey, Rupert and Buhl.
The same facility sorts 4 prefixes, 142 ZIP codes in all: 833, 836, 837, 979.
Where are the 833 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 833
| County | ||||||
|---|---|---|---|---|---|---|
| 83301 | Twin Falls | Twin Falls County | 63,592 | 215 | $63k | $334k |
| 83302 | Rogerson | Twin Falls County | 35 | 0 | $108k | – |
| 83303 | Twin Falls | Twin Falls County | PO Box or unique | – | – | – |
| 83311 | Albion | Cassia County | 903 | 10 | $101k | $294k |
| 83312 | Almo | Cassia County | 278 | 3 | $57k | $436k |
| 83313 | Bellevue | Blaine County | 3,692 | 14 | $75k | $578k |
| 83314 | Bliss | Gooding County | 670 | 5 | $67k | $311k |
| 83316 | Buhl | Twin Falls County | 10,456 | 36 | $70k | $310k |
| 83318 | Burley | Cassia County | 19,459 | 77 | $71k | $277k |
| 83320 | Carey | Blaine County | 1,600 | 4 | $58k | $246k |
| 83321 | Castleford | Twin Falls County | 482 | 3 | $60k | – |
| 83322 | Corral | Camas County | 16 | 0 | – | – |
| 83323 | Declo | Cassia County | 1,984 | 10 | $61k | $340k |
| 83324 | Dietrich | Lincoln County | 851 | 10 | $70k | $271k |
| 83325 | Eden | Jerome County | 944 | 26 | $76k | $240k |
| 83327 | Fairfield | Camas County | 1,037 | 1 | $66k | $288k |
| 83328 | Filer | Twin Falls County | 6,320 | 94 | $71k | $331k |
| 83330 | Gooding | Gooding County | 7,347 | 50 | $61k | $255k |
| 83332 | Hagerman | Twin Falls County | 2,569 | 29 | $65k | $226k |
| 83333 | Hailey | Blaine County | 12,682 | 24 | $100k | $744k |
| 83334 | Hansen | Twin Falls County | 2,227 | 25 | $65k | $273k |
| 83335 | Hazelton | Jerome County | 2,335 | 21 | $61k | $251k |
| 83336 | Heyburn | Minidoka County | 6,075 | 173 | $71k | $299k |
| 83337 | Hill City | Elmore County | 29 | 0 | – | – |
| 83338 | Jerome | Jerome County | 21,944 | 79 | $72k | $269k |
| 83340 | Ketchum | Blaine County | 5,325 | 10 | $94k | $959k |
| 83341 | Kimberly | Twin Falls County | 9,531 | 112 | $99k | $411k |
| 83342 | Malta | Cassia County | 1,231 | 1 | $57k | $224k |
| 83343 | Minidoka | Minidoka County | PO Box or unique | – | – | – |
| 83344 | Murtaugh | Cassia County | 1,234 | 7 | $65k | $426k |
| 83346 | Oakley | Cassia County | 1,451 | 5 | $70k | $269k |
| 83347 | Paul | Minidoka County | 3,465 | 15 | $80k | $297k |
| 83348 | Picabo | Blaine County | 124 | 5 | – | $412k |
| 83349 | Richfield | Lincoln County | 1,211 | 14 | $71k | $230k |
| 83350 | Rupert | Minidoka County | 12,671 | 48 | $62k | $244k |
| 83352 | Shoshone | Lincoln County | 3,317 | 15 | $70k | $260k |
| 83353 | Sun Valley | Blaine County | 1,450 | 163 | $127k | $952k |
| 83354 | Sun Valley | Blaine County | 10 | 500 | – | – |
| 83355 | Wendell | Gooding County | 5,469 | 47 | $66k | $283k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.