Market insights · Washington
Columbia County, WA: growth, migration and housing
Columbia County has 4,141 residents, up 4.7% since 2020 (+2.4% in the last year). In 2022–2023, 126 households moved in and 115 moved out (+11 net), bringing in a net $0.1M of income. Median household income is $71,810, the median home $271,200 and median rent $985 a month.
In Washington: 17th of 39 counties for 5-year population growth · 16th of 39 counties for net in-migration (per resident) · 25th of 39 counties for median household income · 38th of 39 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Columbia County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Walla Walla County, WA | 42 | $1.9M |
Where leavers went
Top counties by households leaving Columbia County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Walla Walla County, WA | 35 | $1.7M |
BizyFi in Columbia County
No companies in the BizyFi directory are based here yet. Search them on the company map (company names with a free account), or browse Washington 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.