Market insights · Idaho
Twin Falls County, ID: growth, migration and housing
Twin Falls County has 97,539 residents, up 7.9% since 2020 (+1.1% in the last year). In 2022–2023, 2,585 households moved in and 2,270 moved out (+315 net), bringing in a net $29.8M of income. Median household income is $67,409, the median home $337,900 and median rent $1,089 a month.
In Idaho: 22nd of 44 counties for 5-year population growth · 15th of 43 counties for net in-migration (per resident) · 23rd of 44 counties for median household income · 20th of 44 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Twin Falls County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Jerome County, ID | 339 | $15.1M |
| Ada County, ID | 195 | $10.2M |
| Gooding County, ID | 138 | $6.0M |
| Cassia County, ID | 98 | $4.9M |
| Canyon County, ID | 68 | $2.7M |
| Minidoka County, ID | 67 | $2.6M |
| Bannock County, ID | 58 | $2.9M |
| Blaine County, ID | 54 | $3.3M |
Where leavers went
Top counties by households leaving Twin Falls County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Ada County, ID | 284 | $15.3M |
| Jerome County, ID | 276 | $14.0M |
| Gooding County, ID | 95 | $4.4M |
| Canyon County, ID | 87 | $4.0M |
| Cassia County, ID | 65 | $3.0M |
| Bannock County, ID | 54 | $2.1M |
| Bonneville County, ID | 50 | $2.1M |
| Minidoka County, ID | 44 | $1.4M |
BizyFi in Twin Falls County
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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.