New Castle, CO Demographics

A map of New Castle's Population by Race

New Castle, Colorado has an estimated population of 4,880, a less than 1% change from the 4,923 recorded in the 2020 Census. The population is 61.0% White, 35.5% Hispanic, 3.5% Multiracial, 0.0% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of New Castle, with one dot drawn for each person counted by the Census, color-coded by race.

New Castle is about as racially diverse as it was in the 2020 Census. It is less diverse than Colorado overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In New Castle, that probability was 50.0% in 2020 and 50.1% in the most recent ACS estimates.

New Castle is ranked the 118th most populous place in Colorado, out of 482 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). New Castle was ranked the 116th most populous place in the 2020 Census.

New Castle's White Population

2,978 residents of New Castle, or 61.0% of the population, identify as White. The share of White residents in New Castle is slightly lower than in Colorado overall, where 64.8% of the population is White. New Castle ranks 369th statewide in terms of White residents as a share of the population, out of 482 places.

Since the 2020 Census, New Castle's White population has declined by an estimated 5.6%. White residents' share of New Castle's population has decreased from 64.1% to 61.0%.

New Castle is more White than neighboring Silt (57.2% White), Glenwood Springs (55.8% White), and Rifle (47% White). New Castle is less White than neighboring Chacra (76.6% White), and No Name (100% White).

New Castle's Black Population

0 residents of New Castle, or 0.0% of the population, identify as Black. The share of Black residents in New Castle is slightly lower than in Colorado overall, where 3.8% of the population is Black. New Castle ranks 262nd statewide in terms of Black residents as a share of the population, out of 482 places.

Since the 2020 Census, New Castle's Black population has declined by an estimated 100.0%. Black residents' share of New Castle's population has remained roughly unchanged at 0.0%.

New Castle is less Black than neighboring Silt (1.6% Black), Glenwood Springs (1.1% Black), and Rifle (0.1% Black).

New Castle's Asian Population

0 residents of New Castle, or 0.0% of the population, identify as Asian. The share of Asian residents in New Castle is slightly lower than in Colorado overall, where 3.2% of the population is Asian. New Castle ranks 179th statewide in terms of Asian residents as a share of the population, out of 482 places.

Since the 2020 Census, New Castle's Asian population has declined by an estimated 100.0%. Asian residents' share of New Castle's population has decreased from 1.0% to 0.0%.

New Castle is less Asian than neighboring Glenwood Springs (0.6% Asian), and Rifle (0.6% Asian).

New Castle's Hispanic Population

1,731 residents of New Castle, or 35.5% of the population, identify as Hispanic. The share of Hispanic residents in New Castle is considerably higher than in Colorado overall, where 22.5% of the population is Hispanic. New Castle ranks 99th statewide in terms of Hispanic residents as a share of the population, out of 482 places.

Since the 2020 Census, New Castle's Hispanic population has grown by an estimated 18.8%. Hispanic residents' share of New Castle's population has increased from 29.6% to 35.5%.

New Castle is more Hispanic than neighboring Chacra (11.2% Hispanic), and No Name (0% Hispanic). New Castle is less Hispanic than neighboring Silt (39.4% Hispanic), Glenwood Springs (37% Hispanic), and Rifle (49.4% Hispanic).

New Castle's Native American/Other Population

0 residents of New Castle, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in New Castle is comparable to the share in Colorado overall, where 1% of the population is Native American/Other. New Castle ranks 251st statewide in terms of Native American/Other residents as a share of the population, out of 482 places.

Since the 2020 Census, New Castle's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of New Castle's population has decreased from 1.0% to 0.0%.

New Castle is less Native American/Other than neighboring Glenwood Springs (1.8% Native American/Other), and Rifle (0.5% Native American/Other).

New Castle's Multiracial Population

171 residents of New Castle, or 3.5% of the population, identify as Multiracial. The share of Multiracial residents in New Castle is comparable to the share in Colorado overall, where 4.6% of the population is Multiracial. New Castle ranks 256th statewide in terms of Multiracial residents as a share of the population, out of 482 places.

Since the 2020 Census, New Castle's Multiracial population has declined by an estimated 11.9%. Multiracial residents' share of New Castle's population has remained roughly unchanged at 3.5%.

New Castle is more Multiracial than neighboring Silt (1.7% Multiracial), No Name (0% Multiracial), and Rifle (2.3% Multiracial). New Castle is less Multiracial than neighboring Chacra (12.3% Multiracial), and Glenwood Springs (3.6% 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.