Cumberland County Demographics

A map of Cumberland County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	264,256	262,137	85.6%	86.5%
Multiracial	16,978	11,897	5.5%	3.9%
Black	10,499	11,925	3.4%	3.9%
Hispanic	8,682	8,011	2.8%	2.6%
Asian	6,787	7,167	2.2%	2.4%
Native American/Other	1,625	1,932	0.5%	0.6%

Cumberland County, Maine has an estimated population of 308,827, a slight increase from the 303,069 recorded in the 2020 Census. The population is 85.6% White, 5.5% Multiracial, 3.4% Black, 2.8% Hispanic, 2.2% Asian, and 0.5% Native American/Other. This demographic dot map shows the population of Cumberland County, with one dot drawn for each person counted by the Census, color-coded by race.

Cumberland has become more racially diverse since the 2020 Census. It is considerably more 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 Cumberland County, that probability was 24.8% in 2020 and 26.2% in the most recent ACS estimates.

Cumberland County is ranked the most populous county in Maine, out of 16 counties. Cumberland County was ranked the 1st most populous county in the 2020 Census.

Cumberland County's White Population

264,256 residents of Cumberland County, or 85.6% of the population, identify as White. The share of White residents in Cumberland County is slightly lower than in Maine overall, where 89.9% of the population is White. Cumberland County ranks 15th statewide in terms of White residents as a share of the population, out of 16 counties.

Since the 2020 Census, Cumberland County's White population has remained roughly the same. White residents' share of Cumberland County's population has decreased from 86.5% to 85.6%.

Cumberland County is less White than neighboring Androscoggin County (87.2% White), Sagadahoc County (92% White), York County (90.1% White), Oxford County (92.2% White), and Kennebec County (91.8% White).

Cumberland County's Black Population

10,499 residents of Cumberland County, or 3.4% of the population, identify as Black. The share of Black residents in Cumberland County is comparable to the share in Maine overall, where 1.8% of the population is Black. Cumberland County ranks 2nd statewide in terms of Black residents as a share of the population, out of 16 counties.

Since the 2020 Census, Cumberland County's Black population has declined by an estimated 12.0%. Black residents' share of Cumberland County's population has decreased from 3.9% to 3.4%.

Cumberland County is more Black than neighboring Sagadahoc County (0.5% Black), York County (1.1% Black), Oxford County (0.3% Black), and Kennebec County (0.9% Black). Cumberland County is less Black than neighboring Androscoggin County (5.5% Black).

Cumberland County's Asian Population

6,787 residents of Cumberland County, or 2.2% of the population, identify as Asian. The share of Asian residents in Cumberland County is comparable to the share in Maine overall, where 1.1% of the population is Asian. Cumberland County ranks 1st statewide in terms of Asian residents as a share of the population, out of 16 counties.

Since the 2020 Census, Cumberland County's Asian population has declined by an estimated 5.3%. Asian residents' share of Cumberland County's population has remained roughly unchanged at 2.2%.

Cumberland County is more Asian than neighboring Androscoggin County (1.2% Asian), Sagadahoc County (0.7% Asian), York County (1.1% Asian), Oxford County (0.7% Asian), and Kennebec County (0.9% Asian).

Cumberland County's Hispanic Population

8,682 residents of Cumberland County, or 2.8% of the population, identify as Hispanic. The share of Hispanic residents in Cumberland County is comparable to the share in Maine overall, where 2.2% of the population is Hispanic. Cumberland County ranks 1st statewide in terms of Hispanic residents as a share of the population, out of 16 counties.

Since the 2020 Census, Cumberland County's Hispanic population has grown by an estimated 8.4%. Hispanic residents' share of Cumberland County's population has remained roughly unchanged at 2.8%.

Cumberland County is more Hispanic than neighboring Androscoggin County (2.2% Hispanic), Sagadahoc County (2% Hispanic), York County (2.2% Hispanic), Oxford County (1.7% Hispanic), and Kennebec County (2.3% Hispanic).

Cumberland County's Native American/Other Population

1,625 residents of Cumberland 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 Cumberland County is comparable to the share in Maine overall, where 0.7% of the population is Native American/Other. Cumberland County ranks 12th statewide in terms of Native American/Other residents as a share of the population, out of 16 counties.

Since the 2020 Census, Cumberland County's Native American/Other population has declined by an estimated 15.9%. Native American/Other residents' share of Cumberland County's population has remained roughly unchanged at 0.5%.

Cumberland County is more Native American/Other than neighboring Androscoggin County (0.3% Native American/Other), and Sagadahoc County (0.4% Native American/Other). Cumberland County is less Native American/Other than neighboring York County (0.6% Native American/Other), and Oxford County (0.6% Native American/Other).

Cumberland County's Multiracial Population

16,978 residents of Cumberland County, or 5.5% of the population, identify as Multiracial. The share of Multiracial residents in Cumberland County is comparable to the share in Maine overall, where 4.2% of the population is Multiracial. Cumberland County ranks 9th statewide in terms of Multiracial residents as a share of the population, out of 16 counties.

Since the 2020 Census, Cumberland County's Multiracial population has grown by an estimated 42.7%. Multiracial residents' share of Cumberland County's population has increased from 3.9% to 5.5%.

Cumberland County is more Multiracial than neighboring Androscoggin County (3.6% Multiracial), Sagadahoc County (4.4% Multiracial), York County (4.9% Multiracial), Oxford County (4.5% Multiracial), and Kennebec County (3.7% 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.