County ZIP codes · Idaho · FIPS 16039
Elmore County, ID ZIP Codes
Elmore County, Idaho has 9 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 8 residential and 1 for PO boxes or a single organization. 6 of the residential ones lie mainly in Elmore County and 2 mainly in a neighboring county; 5 cross the county line. Median household income ranges from $58,145 in 83623 (Glenns Ferry) to $128,822 in 83716 (Boise) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Elmore 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 $58,145 and $74,196.
They carry 8 postal town names: Mountain Home, Boise, Mountain Home Afb, Glenns Ferry, Grand View, Hammett, King Hill, Hill City.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 8 residential ZIP codes in Elmore County
6 ZIP codes lie mainly in Elmore County; 2 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 83647 | Mountain Home | 22,952 | 15 | $64k | $320k | 98% |
| 83716 | Boise | 21,402 | 21 | $129k | $611k | 61% |
| 83648 | Mountain Home Afb | 3,219 | 323 | $74k | – | 100% |
| 83623 | Glenns Ferry | 1,521 | 6 | $58k | $218k | 100% |
| 83633 | King Hill | 502 | 3 | $84k | $435k | 100% |
| 83337 | Hill City | 29 | 0 | – | – | 82% |
Partly in Elmore County
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 Elmore County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Elmore | Elsewhere |
|---|---|---|
| 83647 | 98% | Owyhee County 2% |
| 83716 | 61% | Boise County 24%; Ada County 16% |
| 83624 | 22% | Owyhee County 78% |
| 83627 | 27% | Owyhee County 73% |
| 83337 | 82% | Camas County 18% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 83601 | Atlanta |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Elmore County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Elmore County's ZIP codes use 3 prefixes: 833, 836 and 837.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 833 | Boise, ID (SCF 836) | 1 | 39 |
| 836 | Boise, ID (SCF 836) | 7 | 58 |
| 837 | Boise, ID (SCF 836) | 1 | 29 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.