Market insights · Indiana
Lake County, IN: growth, migration and housing
Lake County has 504,612 residents, up 1.1% since 2020 (+0.4% in the last year). In 2022–2023, 10,161 households moved in and 10,309 moved out (-148 net), while a net $5.7M of income left. Median household income is $71,493, the median home $230,600 and median rent $1,131 a month.
In Indiana: 50th of 92 counties for 5-year population growth · 55th of 92 counties for net in-migration (per resident) · 34th of 92 counties for median household income · 17th of 92 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Lake County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Cook County, IL | 4,226 | $239.8M |
| Porter County, IN | 1,268 | $69.3M |
| Will County, IL | 489 | $36.0M |
| Marion County, IN | 323 | $10.1M |
| LaPorte County, IN | 192 | $8.2M |
| DuPage County, IL | 166 | $15.2M |
| Jasper County, IN | 126 | $6.4M |
| Tippecanoe County, IN | 93 | $3.7M |
Where leavers went
Top counties by households leaving Lake County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Cook County, IL | 2,665 | $117.2M |
| Porter County, IN | 1,691 | $101.3M |
| Marion County, IN | 468 | $16.3M |
| Will County, IL | 281 | $16.0M |
| LaPorte County, IN | 226 | $10.7M |
| Jasper County, IN | 193 | $10.0M |
| Maricopa County, AZ | 145 | $13.6M |
| DuPage County, IL | 111 | $10.2M |
BizyFi in Lake 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.