Anderson Island, WA Demographics

A map of Anderson Island's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	1,159	1,063	80.0%	81.6%
Multiracial	211	109	14.6%	8.4%
Hispanic	55	62	3.8%	4.8%
Black	13	12	0.9%	0.9%
Native American/Other	10	27	0.7%	2.1%
Asian	0	29	0.0%	2.2%

Anderson Island, Washington has an estimated population of 1,448, a large increase from the 1,302 recorded in the 2020 Census. The population is 80.0% White, 14.6% Multiracial, 3.8% Hispanic, 0.9% Black, 0.7% Native American/Other, and 0.0% Asian. This demographic dot map shows the population of Anderson Island, with one dot drawn for each person counted by the Census, color-coded by race.

Anderson Island has become more racially diverse since the 2020 Census. It is considerably less diverse than Washington overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Anderson Island, that probability was 32.3% in 2020 and 33.7% in the most recent ACS estimates.

Anderson Island is ranked the 356th most populous place in Washington, out of 639 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Anderson Island was ranked the 368th most populous place in the 2020 Census.

Anderson Island's White Population

1,159 residents of Anderson Island, or 80.0% of the population, identify as White. The share of White residents in Anderson Island is significantly higher than in Washington overall, where 63.1% of the population is White. Anderson Island ranks 245th statewide in terms of White residents as a share of the population, out of 639 places.

Since the 2020 Census, Anderson Island's White population has grown by an estimated 9.0%. White residents' share of Anderson Island's population has decreased from 81.6% to 80.0%.

Anderson Island is more White than neighboring Ketron Island (0% White), DuPont (57.4% White), Steilacoom (68.2% White), and North Fort Lewis (50.4% White). Anderson Island is less White than neighboring Longbranch (87% White).

Anderson Island's Black Population

13 residents of Anderson Island, or 0.9% of the population, identify as Black. The share of Black residents in Anderson Island is slightly lower than in Washington overall, where 3.8% of the population is Black. Anderson Island ranks 233rd statewide in terms of Black residents as a share of the population, out of 639 places.

Since the 2020 Census, Anderson Island's Black population has grown by an estimated 8.3%. Black residents' share of Anderson Island's population has remained roughly unchanged at 0.9%.

Anderson Island is more Black than neighboring Ketron Island (0% Black). Anderson Island is less Black than neighboring DuPont (4.5% Black), Longbranch (1.2% Black), Steilacoom (4.4% Black), and North Fort Lewis (9% Black).

Anderson Island's Asian Population

0 residents of Anderson Island, or 0.0% of the population, identify as Asian. The share of Asian residents in Anderson Island is lower than in Washington overall, where 9.7% of the population is Asian. Anderson Island ranks 214th statewide in terms of Asian residents as a share of the population, out of 639 places.

Since the 2020 Census, Anderson Island's Asian population has declined by an estimated 100.0%. Asian residents' share of Anderson Island's population has decreased from 2.2% to 0.0%.

Anderson Island is less Asian than neighboring DuPont (14.4% Asian), Longbranch (0.5% Asian), Steilacoom (5% Asian), and North Fort Lewis (4.3% Asian).

Anderson Island's Hispanic Population

55 residents of Anderson Island, or 3.8% of the population, identify as Hispanic. The share of Hispanic residents in Anderson Island is considerably lower than in Washington overall, where 14.4% of the population is Hispanic. Anderson Island ranks 503rd statewide in terms of Hispanic residents as a share of the population, out of 639 places.

Since the 2020 Census, Anderson Island's Hispanic population has declined by an estimated 11.3%. Hispanic residents' share of Anderson Island's population has decreased from 4.8% to 3.8%.

Anderson Island is more Hispanic than neighboring Ketron Island (0% Hispanic). Anderson Island is less Hispanic than neighboring DuPont (12.3% Hispanic), Longbranch (4.2% Hispanic), Steilacoom (13.1% Hispanic), and North Fort Lewis (22.5% Hispanic).

Anderson Island's Native American/Other Population

10 residents of Anderson Island, 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 Anderson Island is comparable to the share in Washington overall, where 2.1% of the population is Native American/Other. Anderson Island ranks 280th statewide in terms of Native American/Other residents as a share of the population, out of 639 places.

Since the 2020 Census, Anderson Island's Native American/Other population has declined by an estimated 63.0%. Native American/Other residents' share of Anderson Island's population has decreased from 2.1% to 0.7%.

Anderson Island is more Native American/Other than neighboring Ketron Island (0% Native American/Other), and Steilacoom (0.2% Native American/Other). Anderson Island is less Native American/Other than neighboring DuPont (3.4% Native American/Other), Longbranch (2% Native American/Other), and North Fort Lewis (3.5% Native American/Other).

Anderson Island's Multiracial Population

211 residents of Anderson Island, or 14.6% of the population, identify as Multiracial. The share of Multiracial residents in Anderson Island is higher than in Washington overall, where 6.8% of the population is Multiracial. Anderson Island ranks 87th statewide in terms of Multiracial residents as a share of the population, out of 639 places.

Since the 2020 Census, Anderson Island's Multiracial population has grown by an estimated 93.6%. Multiracial residents' share of Anderson Island's population has increased from 8.4% to 14.6%.

Anderson Island is more Multiracial than neighboring Ketron Island (0% Multiracial), DuPont (8% Multiracial), Longbranch (5.2% Multiracial), Steilacoom (9.1% Multiracial), and North Fort Lewis (10.2% 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.