| ZIP Codes: | 15 ZIP Codes (10 Standard, 5 PO Box, 0 Unique) [See All] |
| Area Codes: | 208 / 986 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:11:56 PM |
| Population: | 253,453 [See All] |
| FIPS: | 16027 |
| CBSA: | Boise City, ID |
| Land Area: | 900 sq mi |
| Water Area: | 19 sq mi |
| Coordinates: | 43.6254, -116.6956 |
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253,453 residents live across 15 ZIPs covering 900 sq mi, served by 9 distinct USPS-recognized cities.
Population moved from 197,359 to 253,453 from 2014 to 2024 — a +28.4% change. 10 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 83644 (Middleton, $97,293 median) and poorest ZIP 83660 (Parma, $63,653) are 18.2 miles apart — a 1.5× income gap across local geography.
Median home values vary 1.3× across this county — from $338,900 in 83651 (Nampa) to $456,400 in 83644 (Middleton).
Density varies 145× across the county — from 15 people/sq mi in 83641 (Melba) to 2,223 in 83651 (Nampa).
Educational attainment ranges from 14.3% bachelor's+ in 83676 (Wilder) to 27.3% in 83686 (Nampa) — the breadth of educational profiles across the area.
Within Idaho, this is the #2 most populous of 46 counties and ranks #12 for median household income with the #4 fastest decade growth .
On the national stage, Canyon County is and #67 for decade growth .
Weighted by population, the typical household earns about $78,756 across the county — reflecting what a typical resident sees, not a simple ZIP average.
23.3% of adults age 25+ hold a bachelor's degree or higher (37,746 of 162,057 reporting). The most-educated ZIPs cluster around Nampa.
10 Standard delivery, 5 PO Box only, 0 single-entity Unique ZIPs serve this county.
Canyon County grew 28.4% over the past decade — concentrated in 5 high-growth ZIPs:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 83686 | Nampa | Standard | 60,993 | $86,518 | 92.3 | 29.1% |
| 83687 | Nampa | Standard | 43,135 | $76,682 | 50.5 | 42.2% |
| 83605 | Caldwell | Standard | 41,325 | $68,427 | 23.7 | 2.1% |
| 83651 | Nampa | Standard | 38,121 | $69,914 | 17.1 | 26.2% |
| 83607 | Caldwell | Standard | 35,491 | $85,399 | 229.9 | 56.4% |
| 83644 | Middleton | Standard | 16,293 | $97,293 | 45.0 | 61.5% |
| 83660 | Parma | Standard | 6,434 | $63,653 | 127.3 | 1.8% |
| 83676 | Wilder | Standard | 5,105 | $67,176 | 42.2 | 16.9% |
| 83641 | Melba | Standard | 4,061 | $84,730 | 264.7 | 6.4% |
| 83626 | Greenleaf | Standard | 1,935 | $69,531 | 6.7 | 51.4% |
| 83656 | Notus | PO Box | 560 | $64,750 | 0.3 | -1.4% |
| 83652 | Nampa | PO Box | — | — | 0.0 | — |
| 83653 | Nampa | PO Box | — | — | 0.0 | — |
| 83606 | Caldwell | PO Box | — | — | 0.0 | — |
| 83630 | Huston | PO Box | — | — | 0.0 | — |