County ZIP codes · Idaho · FIPS 16083
Twin Falls County, ID ZIP Codes
Twin Falls County, Idaho has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 9 residential and 1 for PO boxes or a single organization. 8 of the residential ones lie mainly in Twin Falls County and 1 mainly in a neighboring county; 4 cross the county line. Median household income ranges from $62,647 in 83301 (Twin Falls) to $99,100 in 83341 (Kimberly) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Twin Falls County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $64,583 and $69,593.
They carry 9 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 9 residential ZIP codes in Twin Falls County
8 ZIP codes lie mainly in Twin Falls County; 1 more reaches into it from a neighboring county and follows the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 83301 | Twin Falls | 63,592 | 215 | $63k | $334k | 99% |
| 83316 | Buhl | 10,456 | 36 | $70k | $310k | 85% |
| 83341 | Kimberly | 9,531 | 112 | $99k | $411k | 100% |
| 83328 | Filer | 6,320 | 94 | $71k | $331k | 100% |
| 83332 | Hagerman | 2,569 | 29 | $65k | $226k | 60% |
| 83334 | Hansen | 2,227 | 25 | $65k | $273k | 100% |
| 83321 | Castleford | 482 | 3 | $60k | – | 100% |
| 83302 | Rogerson | 35 | 0 | $108k | – | 74% |
Partly in Twin Falls County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 83344 | Murtaugh | 1,234 | 7 | $65k | $426k | 31% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
5 ZIP codes of Twin Falls County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Twin Falls | Elsewhere |
|---|---|---|
| 83301 | 99% | |
| 83316 | 85% | Owyhee County 14% |
| 83332 | 60% | Gooding County 40% |
| 83344 | 31% | Cassia County 69% |
| 83302 | 74% | Owyhee County 26% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 83303 | Twin Falls |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Twin Falls County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Twin Falls County starts with 833.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 833 | Boise, ID (SCF 836) | 10 | 39 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.