Market insights · Missouri
Franklin County, MO: growth, migration and housing
Franklin County has 108,090 residents, up 3.1% since 2020 (+0.7% in the last year). In 2022–2023, 2,434 households moved in and 2,181 moved out (+253 net), bringing in a net $38.2M of income. Median household income is $73,165, the median home $227,600 and median rent $893 a month.
In Missouri: 36th of 115 counties for 5-year population growth · 33rd of 115 counties for net in-migration (per resident) · 16th of 115 counties for median household income · 17th of 115 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Franklin County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| St. Louis County, MO | 533 | $58.0M |
| Jefferson County, MO | 283 | $14.5M |
| Crawford County, MO | 178 | $7.9M |
| St. Charles County, MO | 156 | $13.1M |
| Gasconade County, MO | 102 | $3.9M |
| Warren County, MO | 82 | $4.4M |
| St. Louis city, MO | 73 | $3.8M |
| Phelps County, MO | 36 | $1.6M |
Where leavers went
Top counties by households leaving Franklin County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| St. Louis County, MO | 344 | $25.2M |
| Jefferson County, MO | 219 | $10.3M |
| Crawford County, MO | 178 | $7.5M |
| St. Charles County, MO | 136 | $8.4M |
| Gasconade County, MO | 96 | $4.0M |
| St. Louis city, MO | 84 | $4.1M |
| Warren County, MO | 73 | $4.1M |
| Washington County, MO | 53 | $2.3M |
BizyFi in Franklin 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 Missouri companies.
← All Missouri counties · National rankings
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.