Market insights · Missouri
Grundy County, MO: growth, migration and housing
Grundy County has 9,744 residents, down 0.2% since 2020 (-0.1% in the last year). In 2022–2023, 210 households moved in and 235 moved out (-25 net), while a net $1.3M of income left. Median household income is $51,975, the median home $112,500 and median rent $696 a month.
In Missouri: 87th of 115 counties for 5-year population growth · 97th of 115 counties for net in-migration (per resident) · 93rd of 115 counties for median household income · 104th of 115 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Grundy County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Livingston County, MO | 25 | $1.2M |
| Daviess County, MO | 20 | $0.6M |
Where leavers went
Top counties by households leaving Grundy County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Livingston County, MO | 33 | $1.0M |
| Daviess County, MO | 27 | $1.0M |
BizyFi in Grundy 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.