Caldwell, ID Demographics

A map of Caldwell's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	37,216	33,711	56.0%	56.2%
Hispanic	24,478	22,005	36.8%	36.7%
Multiracial	2,725	2,577	4.1%	4.3%
Native American/Other	1,289	732	1.9%	1.2%
Asian	615	510	0.9%	0.9%
Black	193	461	0.3%	0.8%

Caldwell, Idaho has an estimated population of 66,516, a large increase from the 59,996 recorded in the 2020 Census. The population is 56.0% White, 36.8% Hispanic, 4.1% Multiracial, 1.9% Native American/Other, 0.9% Asian, and 0.3% Black. This demographic dot map shows the population of Caldwell, with one dot drawn for each person counted by the Census, color-coded by race.

Caldwell is about as racially diverse as it was in the 2020 Census. It is considerably more diverse than Idaho overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Caldwell, that probability was 54.8% in 2020 and 54.9% in the most recent ACS estimates.

Caldwell is ranked the 5th most populous place in Idaho, out of 236 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). Caldwell was ranked the 5th most populous place in the 2020 Census.

Caldwell's White Population

37,216 residents of Caldwell, or 56.0% of the population, identify as White. The share of White residents in Caldwell is significantly lower than in Idaho overall, where 78.6% of the population is White. Caldwell ranks 212th statewide in terms of White residents as a share of the population, out of 236 places.

Since the 2020 Census, Caldwell's White population has grown by an estimated 10.4%. White residents' share of Caldwell's population has remained roughly unchanged at 56.0%.

Caldwell is less White than neighboring Middleton (75.9% White), Nampa (67.3% White), Notus (57.4% White), Greenleaf (63.3% White), and Star (80.9% White).

Caldwell's Black Population

193 residents of Caldwell, or 0.3% of the population, identify as Black. The share of Black residents in Caldwell is comparable to the share in Idaho overall, where 0.7% of the population is Black. Caldwell ranks 22nd statewide in terms of Black residents as a share of the population, out of 236 places.

Since the 2020 Census, Caldwell's Black population has declined by an estimated 58.1%. Black residents' share of Caldwell's population has decreased from 0.8% to 0.3%.

Caldwell is more Black than neighboring Notus (0% Black), and Greenleaf (0% Black). Caldwell is less Black than neighboring Middleton (0.4% Black), Nampa (1.2% Black), and Star (0.4% Black).

Caldwell's Asian Population

615 residents of Caldwell, or 0.9% of the population, identify as Asian. The share of Asian residents in Caldwell is comparable to the share in Idaho overall, where 1.3% of the population is Asian. Caldwell ranks 52nd statewide in terms of Asian residents as a share of the population, out of 236 places.

Since the 2020 Census, Caldwell's Asian population has grown by an estimated 20.6%. Asian residents' share of Caldwell's population has remained roughly unchanged at 0.9%.

Caldwell is more Asian than neighboring Middleton (0.7% Asian), Nampa (0.6% Asian), Notus (0% Asian), and Greenleaf (0.8% Asian). Caldwell is less Asian than neighboring Star (1.3% Asian).

Caldwell's Hispanic Population

24,478 residents of Caldwell, or 36.8% of the population, identify as Hispanic. The share of Hispanic residents in Caldwell is significantly higher than in Idaho overall, where 13.6% of the population is Hispanic. Caldwell ranks 21st statewide in terms of Hispanic residents as a share of the population, out of 236 places.

Since the 2020 Census, Caldwell's Hispanic population has grown by an estimated 11.2%. Hispanic residents' share of Caldwell's population has remained roughly unchanged at 36.8%.

Caldwell is more Hispanic than neighboring Middleton (15.4% Hispanic), Nampa (25.4% Hispanic), Notus (34.2% Hispanic), Greenleaf (28.1% Hispanic), and Star (10.8% Hispanic).

Caldwell's Native American/Other Population

1,289 residents of Caldwell, or 1.9% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Caldwell is comparable to the share in Idaho overall, where 1.5% of the population is Native American/Other. Caldwell ranks 102nd statewide in terms of Native American/Other residents as a share of the population, out of 236 places.

Since the 2020 Census, Caldwell's Native American/Other population has grown by an estimated 76.1%. Native American/Other residents' share of Caldwell's population has increased from 1.2% to 1.9%.

Caldwell is more Native American/Other than neighboring Middleton (0.5% Native American/Other), Nampa (1.2% Native American/Other), Greenleaf (1.6% Native American/Other), and Star (1.4% Native American/Other). Caldwell is less Native American/Other than neighboring Notus (2.1% Native American/Other).

Caldwell's Multiracial Population

2,725 residents of Caldwell, or 4.1% of the population, identify as Multiracial. The share of Multiracial residents in Caldwell is comparable to the share in Idaho overall, where 4.2% of the population is Multiracial. Caldwell ranks 97th statewide in terms of Multiracial residents as a share of the population, out of 236 places.

Since the 2020 Census, Caldwell's Multiracial population has grown by an estimated 5.7%. Multiracial residents' share of Caldwell's population has remained roughly unchanged at 4.1%.

Caldwell is less Multiracial than neighboring Middleton (7.2% Multiracial), Nampa (4.2% Multiracial), Notus (6.3% Multiracial), Greenleaf (6.2% Multiracial), and Star (5.3% 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.