Waldo County Demographics

A map of Waldo County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	37,315	36,883	92.8%	93.1%
Multiracial	1,588	1,544	4.0%	3.9%
Hispanic	651	559	1.6%	1.4%
Native American/Other	297	286	0.7%	0.7%
Asian	184	200	0.5%	0.5%
Black	157	135	0.4%	0.3%

Waldo County, Maine has an estimated population of 40,192, a slight increase from the 39,607 recorded in the 2020 Census. The population is 92.8% White, 4.0% Multiracial, 1.6% Hispanic, 0.7% Native American/Other, 0.5% Asian, and 0.4% Black. This demographic dot map shows the population of Waldo County, with one dot drawn for each person counted by the Census, color-coded by race.

Waldo has become slightly more racially diverse since the 2020 Census. It is considerably 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 Waldo County, that probability was 13.1% in 2020 and 13.6% in the most recent ACS estimates.

Waldo County is ranked the 11th most populous county in Maine, out of 16 counties. Waldo County was ranked the 11th most populous county in the 2020 Census.

Waldo County's White Population

37,315 residents of Waldo County, or 92.8% of the population, identify as White. The share of White residents in Waldo County is slightly higher than in Maine overall, where 89.9% of the population is White. Waldo County ranks 2nd statewide in terms of White residents as a share of the population, out of 16 counties.

Since the 2020 Census, Waldo County's White population has grown by an estimated 1.2%. White residents' share of Waldo County's population has remained roughly unchanged at 92.8%.

Waldo County is more White than neighboring Kennebec County (91.8% White), Hancock County (92.6% White), and Sagadahoc County (92% White). Waldo County is less White than neighboring Knox County (93.2% White), and Lincoln County (93.1% White).

Waldo County's Black Population

157 residents of Waldo County, or 0.4% of the population, identify as Black. The share of Black residents in Waldo County is comparable to the share in Maine overall, where 1.8% of the population is Black. Waldo County ranks 15th statewide in terms of Black residents as a share of the population, out of 16 counties.

Since the 2020 Census, Waldo County's Black population has grown by an estimated 16.3%. Black residents' share of Waldo County's population has remained roughly unchanged at 0.4%.

Waldo County is more Black than neighboring Knox County (0.3% Black). Waldo County is less Black than neighboring Lincoln County (0.8% Black), Kennebec County (0.9% Black), Hancock County (1% Black), and Sagadahoc County (0.5% Black).

Waldo County's Asian Population

184 residents of Waldo County, or 0.5% of the population, identify as Asian. The share of Asian residents in Waldo County is comparable to the share in Maine overall, where 1.1% of the population is Asian. Waldo County ranks 14th statewide in terms of Asian residents as a share of the population, out of 16 counties.

Since the 2020 Census, Waldo County's Asian population has declined by an estimated 8.0%. Asian residents' share of Waldo County's population has remained roughly unchanged at 0.5%.

Waldo County is less Asian than neighboring Lincoln County (0.7% Asian), Kennebec County (0.9% Asian), Hancock County (1% Asian), and Sagadahoc County (0.7% Asian).

Waldo County's Hispanic Population

651 residents of Waldo County, or 1.6% of the population, identify as Hispanic. The share of Hispanic residents in Waldo County is comparable to the share in Maine overall, where 2.2% of the population is Hispanic. Waldo County ranks 12th statewide in terms of Hispanic residents as a share of the population, out of 16 counties.

Since the 2020 Census, Waldo County's Hispanic population has grown by an estimated 16.5%. Hispanic residents' share of Waldo County's population has remained roughly unchanged at 1.6%.

Waldo County is more Hispanic than neighboring Lincoln County (1.4% Hispanic). Waldo County is less Hispanic than neighboring Knox County (1.9% Hispanic), Kennebec County (2.3% Hispanic), Hancock County (1.9% Hispanic), and Sagadahoc County (2% Hispanic).

Waldo County's Native American/Other Population

297 residents of Waldo County, or 0.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Waldo County is comparable to the share in Maine overall, where 0.7% of the population is Native American/Other. Waldo County ranks 9th statewide in terms of Native American/Other residents as a share of the population, out of 16 counties.

Since the 2020 Census, Waldo County's Native American/Other population has grown by an estimated 3.8%. Native American/Other residents' share of Waldo County's population has remained roughly unchanged at 0.7%.

Waldo County is more Native American/Other than neighboring Knox County (0.4% Native American/Other), Lincoln County (0.4% Native American/Other), Kennebec County (0.5% Native American/Other), and Sagadahoc County (0.4% Native American/Other). Waldo County is less Native American/Other than neighboring Hancock County (0.8% Native American/Other).

Waldo County's Multiracial Population

1,588 residents of Waldo County, or 4.0% of the population, identify as Multiracial. The share of Multiracial residents in Waldo County is comparable to the share in Maine overall, where 4.2% of the population is Multiracial. Waldo County ranks 10th statewide in terms of Multiracial residents as a share of the population, out of 16 counties.

Since the 2020 Census, Waldo County's Multiracial population has grown by an estimated 2.8%. Multiracial residents' share of Waldo County's population has remained roughly unchanged at 4.0%.

Waldo County is more Multiracial than neighboring Knox County (3.8% Multiracial), Lincoln County (3.7% Multiracial), Kennebec County (3.7% Multiracial), and Hancock County (2.8% Multiracial). Waldo County is less Multiracial than neighboring Sagadahoc County (4.4% 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.