Rock River, WY Demographics

A map of Rock River's Population by Race

Rock River, Wyoming has an estimated population of 219, an increase from the 211 recorded in the 2020 Census. The population is 86.8% White, 12.8% Native American/Other, 0.5% Hispanic, 0.0% Black, 0.0% Asian, and 0.0% Multiracial. This demographic dot map shows the population of Rock River, with one dot drawn for each person counted by the Census, color-coded by race.

Rock River has become more racially diverse since the 2020 Census. It is considerably less diverse than Wyoming overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Rock River, that probability was 21.8% in 2020 and 23.1% in the most recent ACS estimates.

Rock River is ranked the 127th most populous place in Wyoming, out of 205 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). Rock River was ranked the 125th most populous place in the 2020 Census.

Rock River's White Population

190 residents of Rock River, or 86.8% of the population, identify as White. The share of White residents in Rock River is higher than in Wyoming overall, where 81.4% of the population is White. Rock River ranks 102nd statewide in terms of White residents as a share of the population, out of 205 places.

Since the 2020 Census, Rock River's White population has grown by an estimated 2.2%. White residents' share of Rock River's population has decreased from 88.2% to 86.8%.

Rock River is more White than neighboring Medicine Bow (82.4% White), and Laramie (78.4% White). Rock River is less White than neighboring Arlington (100% White), Elk Mountain (97% White), and Centennial (100% White).

Rock River's Black Population

0 residents of Rock River, or 0.0% of the population, identify as Black. The share of Black residents in Rock River is comparable to the share in Wyoming overall, where 0.8% of the population is Black. Rock River ranks 46th statewide in terms of Black residents as a share of the population, out of 205 places.

Since the 2020 Census, Rock River's Black population has declined by an estimated 100.0%. Black residents' share of Rock River's population has decreased from 0.5% to 0.0%.

Rock River is less Black than neighboring Laramie (1.2% Black).

Rock River's Asian Population

0 residents of Rock River, or 0.0% of the population, identify as Asian. The share of Asian residents in Rock River is comparable to the share in Wyoming overall, where 0.8% of the population is Asian. Rock River ranks 29th statewide in terms of Asian residents as a share of the population, out of 205 places.

Since the 2020 Census, Rock River's Asian population has declined by an estimated 100.0%. Asian residents' share of Rock River's population has decreased from 0.9% to 0.0%.

Rock River is less Asian than neighboring Laramie (3.8% Asian).

Rock River's Hispanic Population

1 residents of Rock River, or 0.5% of the population, identify as Hispanic. The share of Hispanic residents in Rock River is considerably lower than in Wyoming overall, where 10.7% of the population is Hispanic. Rock River ranks 113th statewide in terms of Hispanic residents as a share of the population, out of 205 places.

Since the 2020 Census, Rock River's Hispanic population has declined by an estimated 90.0%. Hispanic residents' share of Rock River's population has decreased from 4.7% to 0.5%.

Rock River is more Hispanic than neighboring Arlington (0% Hispanic), Elk Mountain (0% Hispanic), and Centennial (0% Hispanic). Rock River is less Hispanic than neighboring Medicine Bow (9.3% Hispanic), and Laramie (11.4% Hispanic).

Rock River's Native American/Other Population

28 residents of Rock River, or 12.8% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Rock River is considerably higher than in Wyoming overall, where 2.4% of the population is Native American/Other. Rock River ranks 109th statewide in terms of Native American/Other residents as a share of the population, out of 205 places.

Since the 2020 Census, Rock River's Native American/Other population has grown by an estimated 1300.0%. Native American/Other residents' share of Rock River's population has increased from 0.9% to 12.8%.

Rock River is more Native American/Other than neighboring Arlington (0% Native American/Other), Medicine Bow (6.8% Native American/Other), Elk Mountain (0% Native American/Other), Centennial (0% Native American/Other), and Laramie (0.5% Native American/Other).

Rock River's Multiracial Population

0 residents of Rock River, or 0.0% of the population, identify as Multiracial. The share of Multiracial residents in Rock River is slightly lower than in Wyoming overall, where 4% of the population is Multiracial. Rock River ranks 58th statewide in terms of Multiracial residents as a share of the population, out of 205 places.

Since the 2020 Census, Rock River's Multiracial population has declined by an estimated 100.0%. Multiracial residents' share of Rock River's population has decreased from 4.7% to 0.0%.

Rock River is less Multiracial than neighboring Medicine Bow (1.6% Multiracial), Elk Mountain (3% Multiracial), and Laramie (4.6% 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.