Market insights · Maine
Knox County, ME: growth, migration and housing
Knox County has 41,117 residents, up 1.1% since 2020 (+0.4% in the last year). In 2022–2023, 1,089 households moved in and 1,062 moved out (+27 net), bringing in a net $26.4M of income. Median household income is $74,096, the median home $324,900 and median rent $1,165 a month.
In Maine: 14th of 16 counties for 5-year population growth · 16th of 16 counties for net in-migration (per resident) · 5th of 16 counties for median household income · 5th of 16 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Knox County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Lincoln County, ME | 95 | $4.2M |
| Waldo County, ME | 87 | $5.2M |
| Cumberland County, ME | 63 | $10.4M |
| Kennebec County, ME | 52 | $2.3M |
| Penobscot County, ME | 33 | $1.2M |
| Hancock County, ME | 27 | $1.4M |
| York County, ME | 26 | $1.1M |
| Middlesex County, MA | 22 | $3.5M |
Where leavers went
Top counties by households leaving Knox County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Lincoln County, ME | 114 | $5.9M |
| Waldo County, ME | 111 | $5.5M |
| Cumberland County, ME | 88 | $9.3M |
| Kennebec County, ME | 62 | $2.7M |
| Penobscot County, ME | 40 | $2.2M |
| York County, ME | 25 | $1.2M |
| Middlesex County, MA | 25 | $1.6M |
| Androscoggin County, ME | 24 | $0.7M |
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 Maine companies.
← All Maine 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.