Newcastle, WA Demographics

A map of Newcastle's Population by Race

Newcastle, Washington has an estimated population of 12,989, a less than 1% change from the 13,017 recorded in the 2020 Census. The population is 42.1% Asian, 37.6% White, 9.3% Multiracial, 4.5% Hispanic, 3.5% Black, and 3.0% Native American/Other. This demographic dot map shows the population of Newcastle, with one dot drawn for each person counted by the Census, color-coded by race.

Newcastle has become more racially diverse since the 2020 Census. It is considerably more 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 Newcastle, that probability was 63.6% in 2020 and 66.9% in the most recent ACS estimates.

Newcastle is ranked the 104th 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). Newcastle was ranked the 103rd most populous place in the 2020 Census.

Newcastle's White Population

4,882 residents of Newcastle, or 37.6% of the population, identify as White. The share of White residents in Newcastle is significantly lower than in Washington overall, where 63.1% of the population is White. Newcastle ranks 558th statewide in terms of White residents as a share of the population, out of 639 places.

Since the 2020 Census, Newcastle's White population has declined by an estimated 22.6%. White residents' share of Newcastle's population has decreased from 48.5% to 37.6%.

Newcastle is more White than neighboring Bryn Mawr-Skyway (30.1% White). Newcastle is less White than neighboring Renton (38.6% White), Bellevue (39.9% White), Beaux Arts Village (78.1% White), and Mercer Island (63.3% White).

Newcastle's Black Population

459 residents of Newcastle, or 3.5% of the population, identify as Black. The share of Black residents in Newcastle is comparable to the share in Washington overall, where 3.8% of the population is Black. Newcastle ranks 69th statewide in terms of Black residents as a share of the population, out of 639 places.

Since the 2020 Census, Newcastle's Black population has grown by an estimated 3.4%. Black residents' share of Newcastle's population has remained roughly unchanged at 3.5%.

Newcastle is more Black than neighboring Bellevue (2.6% Black), Beaux Arts Village (0.9% Black), and Mercer Island (0.9% Black). Newcastle is less Black than neighboring Renton (9% Black), and Bryn Mawr-Skyway (22% Black).

Newcastle's Asian Population

5,462 residents of Newcastle, or 42.1% of the population, identify as Asian. The share of Asian residents in Newcastle is significantly higher than in Washington overall, where 9.7% of the population is Asian. Newcastle ranks 7th statewide in terms of Asian residents as a share of the population, out of 639 places.

Since the 2020 Census, Newcastle's Asian population has grown by an estimated 21.0%. Asian residents' share of Newcastle's population has increased from 34.7% to 42.1%.

Newcastle is more Asian than neighboring Renton (26.4% Asian), Beaux Arts Village (10.3% Asian), Mercer Island (24.4% Asian), and Bryn Mawr-Skyway (28.4% Asian). Newcastle is less Asian than neighboring Bellevue (42.7% Asian).

Newcastle's Hispanic Population

587 residents of Newcastle, or 4.5% of the population, identify as Hispanic. The share of Hispanic residents in Newcastle is lower than in Washington overall, where 14.4% of the population is Hispanic. Newcastle ranks 422nd statewide in terms of Hispanic residents as a share of the population, out of 639 places.

Since the 2020 Census, Newcastle's Hispanic population has declined by an estimated 21.4%. Hispanic residents' share of Newcastle's population has decreased from 5.7% to 4.5%.

Newcastle is more Hispanic than neighboring Beaux Arts Village (2.1% Hispanic), and Mercer Island (2.4% Hispanic). Newcastle is less Hispanic than neighboring Renton (15.6% Hispanic), Bellevue (7.9% Hispanic), and Bryn Mawr-Skyway (9.5% Hispanic).

Newcastle's Native American/Other Population

393 residents of Newcastle, or 3.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Newcastle is comparable to the share in Washington overall, where 2.1% of the population is Native American/Other. Newcastle ranks 551st statewide in terms of Native American/Other residents as a share of the population, out of 639 places.

Since the 2020 Census, Newcastle's Native American/Other population has grown by an estimated 254.1%. Native American/Other residents' share of Newcastle's population has increased from 0.9% to 3.0%.

Newcastle is more Native American/Other than neighboring Renton (1.8% Native American/Other), Bellevue (1.1% Native American/Other), Beaux Arts Village (0% Native American/Other), Mercer Island (0.6% Native American/Other), and Bryn Mawr-Skyway (1.3% Native American/Other).

Newcastle's Multiracial Population

1,206 residents of Newcastle, or 9.3% of the population, identify as Multiracial. The share of Multiracial residents in Newcastle is slightly higher than in Washington overall, where 6.8% of the population is Multiracial. Newcastle ranks 238th statewide in terms of Multiracial residents as a share of the population, out of 639 places.

Since the 2020 Census, Newcastle's Multiracial population has grown by an estimated 34.7%. Multiracial residents' share of Newcastle's population has increased from 6.9% to 9.3%.

Newcastle is more Multiracial than neighboring Renton (8.5% Multiracial), Bellevue (5.8% Multiracial), Beaux Arts Village (8.6% Multiracial), Mercer Island (8.4% Multiracial), and Bryn Mawr-Skyway (8.7% 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.