Market insights · Missouri
Washington County, MO: growth, migration and housing
Washington County has 23,810 residents, up 1.6% since 2020 (+0.8% in the last year). In 2022–2023, 555 households moved in and 454 moved out (+101 net), bringing in a net $6.1M of income. Median household income is $56,043, the median home $129,400 and median rent $684 a month.
In Missouri: 58th of 115 counties for 5-year population growth · 16th of 115 counties for net in-migration (per resident) · 77th of 115 counties for median household income · 96th of 115 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Washington County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| St. Francois County, MO | 143 | $5.5M |
| Jefferson County, MO | 93 | $4.3M |
| Franklin County, MO | 53 | $2.3M |
| St. Louis County, MO | 40 | $2.3M |
Where leavers went
Top counties by households leaving Washington County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| St. Francois County, MO | 142 | $6.3M |
| Jefferson County, MO | 95 | $4.0M |
| Franklin County, MO | 31 | $0.9M |
| St. Louis County, MO | 23 | $0.8M |
BizyFi in Washington 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.