Rio Oso is a city located in Sutter County California. With a 2020 population of 376, it is the 1200th largest city in California and the 20843rd largest city in the United States. Rio Oso is currently growing at a rate of 0.53% annually but its population has decreased by -9.18% since the most recent census, which recorded a population of 414 in 2020. Spanning over 7 miles, Rio Oso has a population density of 58 people per square mile.
The average household income in Rio Oso is $118,372 with a poverty rate of 1.69%. The median rental costs in recent years comes to $1,422 per month, and the median house value is $425,000. The median age in Rio Oso is 37.7 years, 41.5 years for males, and 35.4 years for females.
According to the most recent ACS, the racial composition of Rio Osowas:
Rate of Home Ownership
Average Family Size
Average Household Size
The highest rate of high school graduation is among 2+ races people with a rate of 100.00%.
The highest rate of bachelors degrees is among asian people with a rate of 37.93%.
85.23% of Rio Oso residents speak only English, while 14.77% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 12.95% of the population.
Overall Poverty Rate
Male Poverty Rate
Female Poverty Rate
The race most likely to be in poverty in Rio Oso is White, with 1.93% below the poverty level.
The race least likely to be in poverty in Rio Oso is Other, with NaN% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 0.00%. Among those working part-time, it was 0.00%, and for those that did not work, the poverty rate was 5.22%.
Number of Veterans
Veteran Poverty Rate
Veteran Disability Rate
Labor Force Participation
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Born in Rio Oso
91.06% of Rio Oso residents were born in the United States, with 72.46% having been born in California. 0.00% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.