Market insights · California
Sonoma County, CA: growth, migration and housing
Sonoma County has 486,444 residents, down 0.4% since 2020 (+0.2% in the last year). In 2022–2023, 9,172 households moved in and 9,300 moved out (-128 net), bringing in a net $138.4M of income. Median household income is $104,674, the median home $815,500 and median rent $2,158 a month.
In California: 26th of 58 counties for 5-year population growth · 13th of 58 counties for net in-migration (per resident) · 16th of 58 counties for median household income · 14th of 58 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Sonoma County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Marin County, CA | 1,105 | $142.6M |
| San Francisco County, CA | 634 | $139.4M |
| Alameda County, CA | 540 | $80.1M |
| Los Angeles County, CA | 405 | $37.4M |
| Contra Costa County, CA | 338 | $41.6M |
| Napa County, CA | 317 | $24.3M |
| San Mateo County, CA | 296 | $66.7M |
| Sacramento County, CA | 272 | $19.7M |
Where leavers went
Top counties by households leaving Sonoma County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Marin County, CA | 551 | $57.0M |
| San Francisco County, CA | 438 | $55.4M |
| Sacramento County, CA | 394 | $30.3M |
| Los Angeles County, CA | 349 | $28.3M |
| Alameda County, CA | 334 | $30.8M |
| San Diego County, CA | 295 | $25.1M |
| Lake County, CA | 281 | $18.4M |
| Solano County, CA | 249 | $17.7M |
BizyFi in Sonoma County
7 companies in the BizyFi directory are based here. Search them on the company map (company names with a free account), or browse California 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.