Washington County Demographics

A map of Washington County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	27,440	27,587	87.6%	88.7%
Native American/Other	1,477	1,474	4.7%	4.7%
Multiracial	1,280	1,090	4.1%	3.5%
Hispanic	796	667	2.5%	2.1%
Black	234	156	0.7%	0.5%
Asian	104	121	0.3%	0.4%

Washington County, Maine has an estimated population of 31,331, a less than 1% change from the 31,095 recorded in the 2020 Census. The population is 87.6% White, 4.7% Native American/Other, 4.1% Multiracial, 2.5% Hispanic, 0.7% Black, and 0.3% Asian. This demographic dot map shows the population of Washington County, with one dot drawn for each person counted by the Census, color-coded by race.

Washington has become more racially diverse since the 2020 Census. It is 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 Washington County, that probability was 20.9% in 2020 and 22.8% in the most recent ACS estimates.

Washington County is ranked the 14th most populous county in Maine, out of 16 counties. Washington County was ranked the 14th most populous county in the 2020 Census.

Washington County's White Population

27,440 residents of Washington County, or 87.6% of the population, identify as White. The share of White residents in Washington County is slightly lower than in Maine overall, where 89.9% of the population is White. Washington County ranks 14th statewide in terms of White residents as a share of the population, out of 16 counties.

Since the 2020 Census, Washington County's White population has remained roughly the same. White residents' share of Washington County's population has decreased from 88.7% to 87.6%.

Washington County is less White than neighboring Hancock County (92.6% White), Penobscot County (91.1% White), Waldo County (92.8% White), Knox County (93.2% White), and Piscataquis County (92.7% White).

Washington County's Black Population

234 residents of Washington County, or 0.7% of the population, identify as Black. The share of Black residents in Washington County is comparable to the share in Maine overall, where 1.8% of the population is Black. Washington County ranks 11th statewide in terms of Black residents as a share of the population, out of 16 counties.

Since the 2020 Census, Washington County's Black population has grown by an estimated 50.0%. Black residents' share of Washington County's population has remained roughly unchanged at 0.7%.

Washington County is more Black than neighboring Waldo County (0.4% Black), and Knox County (0.3% Black). Washington County is less Black than neighboring Hancock County (1% Black), Penobscot County (1.1% Black), and Piscataquis County (1% Black).

Washington County's Asian Population

104 residents of Washington County, or 0.3% of the population, identify as Asian. The share of Asian residents in Washington County is comparable to the share in Maine overall, where 1.1% of the population is Asian. Washington County ranks 16th statewide in terms of Asian residents as a share of the population, out of 16 counties.

Since the 2020 Census, Washington County's Asian population has declined by an estimated 14.0%. Asian residents' share of Washington County's population has remained roughly unchanged at 0.3%.

Washington County is less Asian than neighboring Hancock County (1% Asian), Penobscot County (1.1% Asian), Waldo County (0.5% Asian), Knox County (0.5% Asian), and Piscataquis County (0.8% Asian).

Washington County's Hispanic Population

796 residents of Washington County, or 2.5% of the population, identify as Hispanic. The share of Hispanic residents in Washington County is comparable to the share in Maine overall, where 2.2% of the population is Hispanic. Washington County ranks 2nd statewide in terms of Hispanic residents as a share of the population, out of 16 counties.

Since the 2020 Census, Washington County's Hispanic population has grown by an estimated 19.3%. Hispanic residents' share of Washington County's population has remained roughly unchanged at 2.5%.

Washington County is more Hispanic than neighboring Hancock County (1.9% Hispanic), Penobscot County (2.1% Hispanic), Waldo County (1.6% Hispanic), Knox County (1.9% Hispanic), and Piscataquis County (1.9% Hispanic).

Washington County's Native American/Other Population

1,477 residents of Washington County, or 4.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Washington County is slightly higher than in Maine overall, where 0.7% of the population is Native American/Other. Washington County ranks 1st statewide in terms of Native American/Other residents as a share of the population, out of 16 counties.

Since the 2020 Census, Washington County's Native American/Other population has remained roughly the same. Native American/Other residents' share of Washington County's population has remained roughly unchanged at 4.7%.

Washington County is more Native American/Other than neighboring Hancock County (0.8% Native American/Other), Penobscot County (1.3% Native American/Other), Waldo County (0.7% Native American/Other), Knox County (0.4% Native American/Other), and Piscataquis County (0.3% Native American/Other).

Washington County's Multiracial Population

1,280 residents of Washington County, or 4.1% of the population, identify as Multiracial. The share of Multiracial residents in Washington County is comparable to the share in Maine overall, where 4.2% of the population is Multiracial. Washington County ranks 14th statewide in terms of Multiracial residents as a share of the population, out of 16 counties.

Since the 2020 Census, Washington County's Multiracial population has grown by an estimated 17.4%. Multiracial residents' share of Washington County's population has increased from 3.5% to 4.1%.

Washington County is more Multiracial than neighboring Hancock County (2.8% Multiracial), Penobscot County (3.4% Multiracial), Waldo County (4% Multiracial), Knox County (3.8% Multiracial), and Piscataquis County (3.3% 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.