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Market insights · Indiana

Hamilton County, IN: growth, migration and housing

Hamilton County has 387,036 residents, up 10.9% since 2020 (+1.9% in the last year). In 2022–2023, 12,560 households moved in and 11,459 moved out (+1,101 net), bringing in a net $102.7M of income. Median household income is $121,530, the median home $405,500 and median rent $1,574 a month.

Population (2025)387,036
5-year growth+10.9%
1-year growth+1.9%
Net households moving in+1,101
Per 1,000 residents+2.8
Net income moving in+$102.7M
Median household income$121,530
Median home value$405,500
Median rent$1,574/mo
Rent as share of income16%

In Indiana: 3rd of 92 counties for 5-year population growth · 10th of 92 counties for net in-migration (per resident) · 1st of 92 counties for median household income · 1st of 92 counties for median home value.

Where new residents came from

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

FromHouseholds (tax returns)Their income (AGI)
Marion County, IN3,949$360.1M
Madison County, IN424$26.0M
Boone County, IN411$78.1M
Hendricks County, IN376$30.6M
Hancock County, IN286$24.8M
Cook County, IL247$32.3M
Johnson County, IN219$24.5M
Allen County, IN184$12.8M

Where leavers went

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

ToHouseholds (tax returns)Their income (AGI)
Marion County, IN3,043$251.8M
Madison County, IN773$50.8M
Hancock County, IN559$65.9M
Boone County, IN533$97.1M
Cook County, IL276$23.3M
Hendricks County, IN258$19.1M
Johnson County, IN160$13.5M
Delaware County, IN145$8.1M

BizyFi in Hamilton County

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

← All Indiana 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.