Market insights · Idaho
Ada County, ID: growth, migration and housing
Ada County has 546,141 residents, up 9.6% since 2020 (+2.0% in the last year). In 2022–2023, 16,612 households moved in and 14,149 moved out (+2,463 net), bringing in a net $326.2M of income. Median household income is $91,502, the median home $512,300 and median rent $1,577 a month.
In Idaho: 15th of 44 counties for 5-year population growth · 10th of 43 counties for net in-migration (per resident) · 3rd of 44 counties for median household income · 5th of 44 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Ada County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Canyon County, ID | 2,868 | $169.3M |
| Orange County, CA | 441 | $50.4M |
| Los Angeles County, CA | 440 | $52.0M |
| King County, WA | 367 | $51.5M |
| San Diego County, CA | 358 | $39.8M |
| Maricopa County, AZ | 347 | $31.7M |
| Elmore County, ID | 302 | $16.0M |
| Twin Falls County, ID | 284 | $15.3M |
Where leavers went
Top counties by households leaving Ada County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Canyon County, ID | 3,601 | $236.2M |
| Maricopa County, AZ | 334 | $28.3M |
| King County, WA | 266 | $20.8M |
| Elmore County, ID | 227 | $12.4M |
| Salt Lake County, UT | 217 | $12.5M |
| Gem County, ID | 216 | $15.2M |
| Twin Falls County, ID | 195 | $10.2M |
| Utah County, UT | 182 | $11.1M |
BizyFi in Ada County
6 companies in the BizyFi directory are based here. Search them on the company map (company names with a free account), or browse Idaho companies.
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Sources: U.S. Census Bureau population estimates (vintage 2025), American Community Survey 5-year (2024), and IRS Statistics of Income county-to-county migration data (2022–2023). Migration counts are tax returns (roughly households) moving between U.S. counties; the IRS suppresses very small flows. Growth rates, per-1,000 figures, rent share and state ranks are BizyFi calculations. Data updated 2026-10-17. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.