Rio Blanco County Demographics

A map of Rio Blanco County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	5,365	5,509	82.0%	84.4%
Hispanic	709	622	10.8%	9.5%
Multiracial	386	265	5.9%	4.1%
Asian	44	22	0.7%	0.3%
Native American/Other	40	82	0.6%	1.3%
Black	0	29	0.0%	0.4%

Rio Blanco County, Colorado has an estimated population of 6,544, a less than 1% change from the 6,529 recorded in the 2020 Census. The population is 82.0% White, 10.8% Hispanic, 5.9% Multiracial, 0.7% Asian, 0.6% Native American/Other, and 0.0% Black. This demographic dot map shows the population of Rio Blanco County, with one dot drawn for each person counted by the Census, color-coded by race.

Rio Blanco has become more racially diverse since the 2020 Census. It is considerably 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 Rio Blanco County, that probability was 27.7% in 2020 and 31.3% in the most recent ACS estimates.

Rio Blanco County is ranked the 46th most populous county in Colorado, out of 64 counties. Rio Blanco County was ranked the 45th most populous county in the 2020 Census.

Rio Blanco County's White Population

5,365 residents of Rio Blanco County, or 82.0% of the population, identify as White. The share of White residents in Rio Blanco County is significantly higher than in Colorado overall, where 64.8% of the population is White. Rio Blanco County ranks 13th statewide in terms of White residents as a share of the population, out of 64 counties.

Since the 2020 Census, Rio Blanco County's White population has declined by an estimated 2.6%. White residents' share of Rio Blanco County's population has decreased from 84.4% to 82.0%.

Rio Blanco County is more White than neighboring Garfield County (61.5% White), Moffat County (76.5% White), Mesa County (78.4% White), Delta County (79.8% White), and Uintah County (80% White).

Rio Blanco County's Black Population

0 residents of Rio Blanco County, or 0.0% of the population, identify as Black. The share of Black residents in Rio Blanco County is slightly lower than in Colorado overall, where 3.8% of the population is Black. Rio Blanco County ranks 42nd statewide in terms of Black residents as a share of the population, out of 64 counties.

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

Rio Blanco County is less Black than neighboring Garfield County (0.6% Black), Mesa County (0.6% Black), Delta County (0.7% Black), and Uintah County (0.5% Black).

Rio Blanco County's Asian Population

44 residents of Rio Blanco County, or 0.7% of the population, identify as Asian. The share of Asian residents in Rio Blanco County is slightly lower than in Colorado overall, where 3.2% of the population is Asian. Rio Blanco County ranks 53rd statewide in terms of Asian residents as a share of the population, out of 64 counties.

Since the 2020 Census, Rio Blanco County's Asian population has grown by an estimated 100.0%. Asian residents' share of Rio Blanco County's population has remained roughly unchanged at 0.7%.

Rio Blanco County is more Asian than neighboring Moffat County (0.5% Asian), and Delta County (0.5% Asian). Rio Blanco County is less Asian than neighboring Garfield County (0.8% Asian), Mesa County (0.9% Asian), and Uintah County (0.8% Asian).

Rio Blanco County's Hispanic Population

709 residents of Rio Blanco County, or 10.8% of the population, identify as Hispanic. The share of Hispanic residents in Rio Blanco County is considerably lower than in Colorado overall, where 22.5% of the population is Hispanic. Rio Blanco County ranks 50th statewide in terms of Hispanic residents as a share of the population, out of 64 counties.

Since the 2020 Census, Rio Blanco County's Hispanic population has grown by an estimated 14.0%. Hispanic residents' share of Rio Blanco County's population has increased from 9.5% to 10.8%.

Rio Blanco County is more Hispanic than neighboring Uintah County (8.8% Hispanic). Rio Blanco County is less Hispanic than neighboring Garfield County (32.6% Hispanic), Moffat County (16.8% Hispanic), Mesa County (15.5% Hispanic), and Delta County (14.5% Hispanic).

Rio Blanco County's Native American/Other Population

40 residents of Rio Blanco County, or 0.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Rio Blanco County is comparable to the share in Colorado overall, where 1% of the population is Native American/Other. Rio Blanco County ranks 27th statewide in terms of Native American/Other residents as a share of the population, out of 64 counties.

Since the 2020 Census, Rio Blanco County's Native American/Other population has declined by an estimated 51.2%. Native American/Other residents' share of Rio Blanco County's population has decreased from 1.3% to 0.6%.

Rio Blanco County is less Native American/Other than neighboring Garfield County (1% Native American/Other), Moffat County (1.8% Native American/Other), Mesa County (1.2% Native American/Other), Delta County (1.5% Native American/Other), and Uintah County (4.1% Native American/Other).

Rio Blanco County's Multiracial Population

386 residents of Rio Blanco County, or 5.9% of the population, identify as Multiracial. The share of Multiracial residents in Rio Blanco County is comparable to the share in Colorado overall, where 4.6% of the population is Multiracial. Rio Blanco County ranks 28th statewide in terms of Multiracial residents as a share of the population, out of 64 counties.

Since the 2020 Census, Rio Blanco County's Multiracial population has grown by an estimated 45.7%. Multiracial residents' share of Rio Blanco County's population has increased from 4.1% to 5.9%.

Rio Blanco County is more Multiracial than neighboring Garfield County (3.4% Multiracial), Moffat County (4.4% Multiracial), Mesa County (3.5% Multiracial), Delta County (3.1% Multiracial), and Uintah County (5.8% 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.