Kennebec County Demographics

A map of Kennebec County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	116,399	112,682	91.8%	91.1%
Multiracial	4,687	5,469	3.7%	4.4%
Hispanic	2,861	2,552	2.3%	2.1%
Asian	1,129	1,215	0.9%	1.0%
Black	1,080	850	0.9%	0.7%
Native American/Other	652	874	0.5%	0.7%

Kennebec County, Maine has an estimated population of 126,808, a slight increase from the 123,642 recorded in the 2020 Census. The population is 91.8% White, 3.7% Multiracial, 2.3% Hispanic, 0.9% Black, 0.9% Asian, and 0.5% Native American/Other. This demographic dot map shows the population of Kennebec County, with one dot drawn for each person counted by the Census, color-coded by race.

Kennebec has become less racially diverse since the 2020 Census. It is less diverse than Maine overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Kennebec County, that probability was 16.7% in 2020 and 15.5% in the most recent ACS estimates.

Kennebec County is ranked the 4th most populous county in Maine, out of 16 counties. Kennebec County was ranked the 4th most populous county in the 2020 Census.

Kennebec County's White Population

116,399 residents of Kennebec County, or 91.8% of the population, identify as White. The share of White residents in Kennebec County is comparable to the share in Maine overall, where 89.9% of the population is White. Kennebec County ranks 12th statewide in terms of White residents as a share of the population, out of 16 counties.

Since the 2020 Census, Kennebec County's White population has grown by an estimated 3.3%. White residents' share of Kennebec County's population has increased from 91.1% to 91.8%.

Kennebec County is more White than neighboring Androscoggin County (87.2% White), and Cumberland County (85.6% White). Kennebec County is less White than neighboring Lincoln County (93.1% White), Sagadahoc County (92% White), and Waldo County (92.8% White).

Kennebec County's Black Population

1,080 residents of Kennebec County, or 0.9% of the population, identify as Black. The share of Black residents in Kennebec County is comparable to the share in Maine overall, where 1.8% of the population is Black. Kennebec County ranks 6th statewide in terms of Black residents as a share of the population, out of 16 counties.

Since the 2020 Census, Kennebec County's Black population has grown by an estimated 27.1%. Black residents' share of Kennebec County's population has remained roughly unchanged at 0.9%.

Kennebec County is more Black than neighboring Lincoln County (0.8% Black), Sagadahoc County (0.5% Black), and Waldo County (0.4% Black). Kennebec County is less Black than neighboring Androscoggin County (5.5% Black), and Cumberland County (3.4% Black).

Kennebec County's Asian Population

1,129 residents of Kennebec County, or 0.9% of the population, identify as Asian. The share of Asian residents in Kennebec County is comparable to the share in Maine overall, where 1.1% of the population is Asian. Kennebec County ranks 6th statewide in terms of Asian residents as a share of the population, out of 16 counties.

Since the 2020 Census, Kennebec County's Asian population has declined by an estimated 7.1%. Asian residents' share of Kennebec County's population has remained roughly unchanged at 0.9%.

Kennebec County is more Asian than neighboring Lincoln County (0.7% Asian), Sagadahoc County (0.7% Asian), and Waldo County (0.5% Asian). Kennebec County is less Asian than neighboring Androscoggin County (1.2% Asian), and Cumberland County (2.2% Asian).

Kennebec County's Hispanic Population

2,861 residents of Kennebec County, or 2.3% of the population, identify as Hispanic. The share of Hispanic residents in Kennebec County is comparable to the share in Maine overall, where 2.2% of the population is Hispanic. Kennebec County ranks 3rd statewide in terms of Hispanic residents as a share of the population, out of 16 counties.

Since the 2020 Census, Kennebec County's Hispanic population has grown by an estimated 12.1%. Hispanic residents' share of Kennebec County's population has remained roughly unchanged at 2.3%.

Kennebec County is more Hispanic than neighboring Lincoln County (1.4% Hispanic), Androscoggin County (2.2% Hispanic), Sagadahoc County (2% Hispanic), and Waldo County (1.6% Hispanic). Kennebec County is less Hispanic than neighboring Cumberland County (2.8% Hispanic).

Kennebec County's Native American/Other Population

652 residents of Kennebec County, or 0.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Kennebec County is comparable to the share in Maine overall, where 0.7% of the population is Native American/Other. Kennebec County ranks 10th statewide in terms of Native American/Other residents as a share of the population, out of 16 counties.

Since the 2020 Census, Kennebec County's Native American/Other population has declined by an estimated 25.4%. Native American/Other residents' share of Kennebec County's population has remained roughly unchanged at 0.5%.

Kennebec County is more Native American/Other than neighboring Lincoln County (0.4% Native American/Other), Androscoggin County (0.3% Native American/Other), and Sagadahoc County (0.4% Native American/Other). Kennebec County is less Native American/Other than neighboring Waldo County (0.7% Native American/Other).

Kennebec County's Multiracial Population

4,687 residents of Kennebec County, or 3.7% of the population, identify as Multiracial. The share of Multiracial residents in Kennebec County is comparable to the share in Maine overall, where 4.2% of the population is Multiracial. Kennebec County ranks 2nd statewide in terms of Multiracial residents as a share of the population, out of 16 counties.

Since the 2020 Census, Kennebec County's Multiracial population has declined by an estimated 14.3%. Multiracial residents' share of Kennebec County's population has decreased from 4.4% to 3.7%.

Kennebec County is more Multiracial than neighboring Androscoggin County (3.6% Multiracial). Kennebec County is less Multiracial than neighboring Sagadahoc County (4.4% Multiracial), Waldo County (4% Multiracial), and Cumberland County (5.5% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.