County ZIP codes · Idaho · FIPS 16005
Bannock County, ID ZIP Codes
Bannock County, Idaho has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 10 residential and 2 for PO boxes or a single organization. 9 of the residential ones lie mainly in Bannock County and 1 mainly in a neighboring county; 2 cross the county line. Median household income ranges from $57,146 in 83204 (Pocatello) to $93,005 in 83245 (Inkom) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Bannock 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 $66,357 and $73,555.
They carry 7 postal town names: Pocatello, Inkom, McCammon, Downey, Lava Hot Springs, Arimo, Swanlake.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 10 residential ZIP codes in Bannock County
9 ZIP codes lie mainly in Bannock County; 1 more reaches into it from a neighboring county and follows the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 83201 | Pocatello | 39,902 | 1,167 | $66k | $287k | 100% |
| 83202 | Pocatello | 24,513 | 147 | $70k | $334k | 90% |
| 83245 | Inkom | 2,321 | 24 | $93k | $449k | 100% |
| 83250 | McCammon | 2,179 | 26 | $74k | $322k | 100% |
| 83234 | Downey | 1,417 | 5 | $81k | $229k | 100% |
| 83209 | Pocatello | 937 | 1,399 | $19k | – | 100% |
| 83246 | Lava Hot Springs | 821 | 6 | $73k | $395k | 100% |
| 83214 | Arimo | 586 | 5 | $80k | $279k | 100% |
| 83281 | Swanlake | 148 | 4 | $131k | – | 100% |
Partly in Bannock County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 83204 | Pocatello | 18,580 | 66 | $57k | $264k | 41% |
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?
2 ZIP codes of Bannock County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Bannock | Elsewhere |
|---|---|---|
| 83202 | 90% | Bingham County10% |
| 83204 | 41% | Power County59% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Bannock 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 Bannock County starts with 832.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 832 | Pocatello, ID (SCF 832) | 12 | 57 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.