Kennebec County Population

1800–2026

129.46K

2026 projection

3.8% since 2020 (increase)

020K40K60K80K100K120K140K18001850190019502000

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Kennebec County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026129,462+3950.31%
2025129,067+3950.31%
2024128,672+4180.33%
2023128,254+1,0720.84%
2022127,182+1,3791.10%
2021125,803+1,0710.86%
2020124,732+2,4912.04%
2019122,241+1550.13%
2018122,086+1160.10%
2017121,970+4320.36%

Showing 10 of 37 years.

Kennebec County Demographics

43.7median age

Median age

Female44.7 yrs
Male42.2 yrs

Adults

103,069
26,806 seniors (65+) · 26% of adults76,263 other adults

Sex

Female 51.1% · 64,771Male 48.9% · 62,037

Population by age

MaleFemale85+ years, male: 1,15385+ years, female: 1,55380–84 years, male: 1,41380–84 years, female: 1,66575–79 years, male: 2,01175–79 years, female: 2,76270–74 years, male: 3,32070–74 years, female: 3,91665–69 years, male: 4,43565–69 years, female: 4,57860–64 years, male: 5,00460–64 years, female: 4,75655–59 years, male: 4,25355–59 years, female: 5,17850–54 years, male: 4,19550–54 years, female: 4,10845–49 years, male: 3,38145–49 years, female: 3,67640–44 years, male: 3,46940–44 years, female: 3,95835–39 years, male: 3,99835–39 years, female: 3,90730–34 years, male: 3,88030–34 years, female: 3,77225–29 years, male: 3,56825–29 years, female: 3,61720–24 years, male: 4,01820–24 years, female: 3,88515–19 years, male: 3,95915–19 years, female: 3,88010–14 years, male: 3,29010–14 years, female: 3,1045–9 years, male: 3,8025–9 years, female: 3,4930–4 years, male: 2,8880–4 years, female: 2,96385+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–42K2K4K4K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 1,268 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Kennebec County Income

$69,077median household income

Median household income

$69,077

Half of households earn more, half earn less

Median earnings

$49,450

Typical yearly pay for a worker 25 or older.

Poverty rate

11.6%

About 1 in 9 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Kennebec County Marital Status

47% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married47%50%45%
Never married31%33%29%
Divorced15%13%16%
Widowed6%3%8%
Separated1%1%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year