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Market insights · Tennessee

Knox County, TN: growth, migration and housing

Knox County has 511,453 residents, up 6.5% since 2020 (+0.8% in the last year). In 2022–2023, 14,608 households moved in and 13,090 moved out (+1,518 net), bringing in a net $181.4M of income. Median household income is $74,222, the median home $320,900 and median rent $1,261 a month.

Population (2025)511,453
5-year growth+6.5%
1-year growth+0.8%
Net households moving in+1,518
Per 1,000 residents+3.0
Net income moving in+$181.4M
Median household income$74,222
Median home value$320,900
Median rent$1,261/mo
Rent as share of income20%

In Tennessee: 38th of 95 counties for 5-year population growth · 69th of 95 counties for net in-migration (per resident) · 15th of 95 counties for median household income · 12th of 95 counties for median home value.

Where new residents came from

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

FromHouseholds (tax returns)Their income (AGI)
Blount County, TN1,076$87.8M
Anderson County, TN772$45.7M
Sevier County, TN556$35.2M
Loudon County, TN420$32.7M
Jefferson County, TN275$14.5M
Davidson County, TN267$20.4M
Roane County, TN238$17.8M
Union County, TN226$10.0M

Where leavers went

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

ToHouseholds (tax returns)Their income (AGI)
Blount County, TN1,105$69.7M
Anderson County, TN1,038$60.9M
Loudon County, TN646$70.3M
Sevier County, TN494$26.7M
Davidson County, TN361$17.9M
Roane County, TN359$23.4M
Jefferson County, TN346$20.6M
Union County, TN267$15.9M

BizyFi in Knox County

5 companies in the BizyFi directory are based here. Search them on the company map (company names with a free account), or browse Tennessee companies.

← All Tennessee 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.