Boise County, Idaho ZIP codes
6 ZIP codes are in Boise County, plus 3 that cross in from neighboring counties. It's part of the Boise City, ID metro area.
- ZIP codes
- 6
- Population in these ZIPs
- 6,053
- Avg. median income
- $71,700population-weighted
- Cities & towns
- 6
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Boise County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 83602 | Banks | 0 | — | — |
| 83622 | Garden Valley | 2,132 | $65,625 | $550,700 |
| 83629 | Horseshoe Bend | 1,749 | $72,500 | $521,000 |
| 83631 | Idaho City | 1,916 | $80,714 | $402,800 |
| 83637 | Lowman | 226 | $46,944 | $327,000 |
| 83666 | Placerville | 30 | $63,125 | $412,500 |
ZIP codes partly in Boise County
These ZIP codes are mostly in a neighboring county but cover part of Boise County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 83670 | Sweet | Gem County | 752 | $91,685 | $644,600 |
| 83702 | Boise | Ada County | 24,163 | $85,733 | $731,700 |
| 83716 | Boise | Elmore County | 21,402 | $128,822 | $628,400 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Boise County
Nearby counties
Frequently asked questions
How many ZIP codes are in Boise County, Idaho?
6 ZIP codes are mainly in Boise County, and 3 more ZIP codes from neighboring areas reach partly into it.
What cities are in Boise County?
ZIP codes in Boise County use the city names Banks, Garden Valley, Horseshoe Bend, Idaho City, Lowman and Placerville.
What metro area is Boise County in?
Boise County is part of the Boise City, ID metropolitan statistical area.