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Market insights · Maine

Kennebec County, ME: growth, migration and housing

Kennebec County has 129,067 residents, up 3.5% since 2020 (+0.3% in the last year). In 2022–2023, 3,404 households moved in and 3,126 moved out (+278 net), bringing in a net $14.6M of income. Median household income is $69,077, the median home $238,200 and median rent $992 a month.

Population (2025)129,067
5-year growth+3.5%
1-year growth+0.3%
Net households moving in+278
Per 1,000 residents+2.2
Net income moving in+$14.6M
Median household income$69,077
Median home value$238,200
Median rent$992/mo
Rent as share of income17%

In Maine: 9th of 16 counties for 5-year population growth · 10th of 16 counties for net in-migration (per resident) · 8th of 16 counties for median household income · 9th of 16 counties for median home value.

Where new residents came from

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

FromHouseholds (tax returns)Their income (AGI)
Somerset County, ME363$15.4M
Cumberland County, ME353$19.5M
Androscoggin County, ME334$18.3M
Penobscot County, ME187$9.0M
Lincoln County, ME152$7.5M
Sagadahoc County, ME150$11.1M
Waldo County, ME113$5.9M
York County, ME112$6.3M

Where leavers went

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

ToHouseholds (tax returns)Their income (AGI)
Somerset County, ME406$20.4M
Cumberland County, ME303$19.7M
Androscoggin County, ME272$12.5M
Penobscot County, ME171$7.8M
Lincoln County, ME133$7.1M
Sagadahoc County, ME128$6.4M
Waldo County, ME104$4.8M
York County, ME99$5.8M

BizyFi in Kennebec County

Fewer than 3 companies in the BizyFi directory are based here. Search them on the company map (company names with a free account), or browse Maine 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.