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Market insights · Missouri

Knox County, MO: growth, migration and housing

Knox County has 3,728 residents, down 0.1% since 2020 (+0.5% in the last year). In 2022–2023, 53 households moved in and 72 moved out (-19 net), while a net $0.7M of income left. Median household income is $57,788, the median home $101,400 and median rent $666 a month.

Population (2025)3,728
5-year growth-0.1%
1-year growth+0.5%
Net households moving in-19
Per 1,000 residents-5.1
Net income moving in-$0.7M
Median household income$57,788
Median home value$101,400
Median rent$666/mo
Rent as share of income14%

In Missouri: 86th of 115 counties for 5-year population growth · 109th of 115 counties for net in-migration (per resident) · 69th of 115 counties for median household income · 111th of 115 counties for median home value.

Where new residents came from

Top counties by households (tax returns) moving to Knox County, 2022–2023 (IRS).

The IRS publishes no county-level flows for Knox County (it suppresses flows of fewer than 20 households).

Where leavers went

Top counties by households leaving Knox County, 2022–2023 (IRS).

ToHouseholds (tax returns)Their income (AGI)
Adair County, MO20$0.8M

BizyFi in Knox 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.

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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.