Rio, WI Demographics

A map of Rio's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	1,072	1,057	94.0%	94.5%
Multiracial	40	23	3.5%	2.1%
Hispanic	23	21	2.0%	1.9%
Black	4	10	0.4%	0.9%
Native American/Other	2	6	0.2%	0.5%
Asian	0	2	0.0%	0.2%

Rio, Wisconsin has an estimated population of 1,141, a slight increase from the 1,119 recorded in the 2020 Census. The population is 94.0% White, 3.5% Multiracial, 2.0% Hispanic, 0.4% Black, 0.2% Native American/Other, and 0.0% Asian. This demographic dot map shows the population of Rio, with one dot drawn for each person counted by the Census, color-coded by race.

Rio has become slightly more racially diverse since the 2020 Census. It is considerably less diverse than Wisconsin overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Rio, that probability was 10.7% in 2020 and 11.6% in the most recent ACS estimates.

Rio is ranked the 372nd most populous place in Wisconsin, out of 808 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). Rio was ranked the 374th most populous place in the 2020 Census.

Rio's White Population

1,072 residents of Rio, or 94.0% of the population, identify as White. The share of White residents in Rio is significantly higher than in Wisconsin overall, where 78.6% of the population is White. Rio ranks 156th statewide in terms of White residents as a share of the population, out of 808 places.

Since the 2020 Census, Rio's White population has grown by an estimated 1.4%. White residents' share of Rio's population has decreased from 94.5% to 94.0%.

Rio is more White than neighboring Doylestown (88.1% White), Cambria (79% White), and Arlington (92.3% White). Rio is less White than neighboring Wyocena (95.4% White), and Pardeeville (96.8% White).

Rio's Black Population

4 residents of Rio, or 0.4% of the population, identify as Black. The share of Black residents in Rio is lower than in Wisconsin overall, where 5.9% of the population is Black. Rio ranks 227th statewide in terms of Black residents as a share of the population, out of 808 places.

Since the 2020 Census, Rio's Black population has declined by an estimated 60.0%. Black residents' share of Rio's population has decreased from 0.9% to 0.4%.

Rio is more Black than neighboring Wyocena (0% Black), Doylestown (0% Black), Pardeeville (0% Black), and Arlington (0.1% Black). Rio is less Black than neighboring Cambria (2.4% Black).

Rio's Asian Population

0 residents of Rio, or 0.0% of the population, identify as Asian. The share of Asian residents in Rio is slightly lower than in Wisconsin overall, where 2.9% of the population is Asian. Rio ranks 551st statewide in terms of Asian residents as a share of the population, out of 808 places.

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

Rio is less Asian than neighboring Wyocena (0.6% Asian), Pardeeville (1.1% Asian), Cambria (0.1% Asian), and Arlington (1% Asian).

Rio's Hispanic Population

23 residents of Rio, or 2.0% of the population, identify as Hispanic. The share of Hispanic residents in Rio is lower than in Wisconsin overall, where 8% of the population is Hispanic. Rio ranks 580th statewide in terms of Hispanic residents as a share of the population, out of 808 places.

Since the 2020 Census, Rio's Hispanic population has grown by an estimated 9.5%. Hispanic residents' share of Rio's population has remained roughly unchanged at 2.0%.

Rio is more Hispanic than neighboring Doylestown (0.6% Hispanic), and Pardeeville (0.4% Hispanic). Rio is less Hispanic than neighboring Wyocena (2.5% Hispanic), Cambria (17.5% Hispanic), and Arlington (3.5% Hispanic).

Rio's Native American/Other Population

2 residents of Rio, or 0.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Rio is comparable to the share in Wisconsin overall, where 0.9% of the population is Native American/Other. Rio ranks 443rd statewide in terms of Native American/Other residents as a share of the population, out of 808 places.

Since the 2020 Census, Rio's Native American/Other population has declined by an estimated 66.7%. Native American/Other residents' share of Rio's population has remained roughly unchanged at 0.2%.

Rio is more Native American/Other than neighboring Doylestown (0% Native American/Other), Pardeeville (0% Native American/Other), and Cambria (0% Native American/Other). Rio is less Native American/Other than neighboring Wyocena (0.4% Native American/Other), and Arlington (0.4% Native American/Other).

Rio's Multiracial Population

40 residents of Rio, or 3.5% of the population, identify as Multiracial. The share of Multiracial residents in Rio is comparable to the share in Wisconsin overall, where 3.7% of the population is Multiracial. Rio ranks 629th statewide in terms of Multiracial residents as a share of the population, out of 808 places.

Since the 2020 Census, Rio's Multiracial population has grown by an estimated 73.9%. Multiracial residents' share of Rio's population has increased from 2.1% to 3.5%.

Rio is more Multiracial than neighboring Wyocena (1% Multiracial), Pardeeville (1.7% Multiracial), Cambria (1% Multiracial), and Arlington (2.7% Multiracial). Rio is less Multiracial than neighboring Doylestown (11.3% 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.