Rio Oso, CA population, income and ZIP codes

Rio Oso CDP is a very small community in California, with 421 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #1258 of 1,618 ranked by population — larger than 22% of them. The median age here is 36.1 years against 39.1 nationally, a slightly younger profile than the country as a whole. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in Rio Oso CDP earn a median of $172,500 a year, 119.6% above the national figure of $78,538 and 89% above the $91,111 median for the 1,050 California cities we cover. This figure covers the household, not the worker: two people on ordinary wages at one address outrank a single professional in the same table. Poverty reaches 3.8% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Rio Oso CDP is valued at $478,800, 57.8% above the national figure and 19% below the $589,600 peer median, while median gross rent runs not published a month. The home-price-to-income ratio works out to 2.8×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 88.5% of occupied homes are owner-occupied versus 65% nationally, an owner-dominated market where rental listings are scarce and rent medians rest on a thin sample. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.

With 421 residents, a handful of survey responses moves every median on this page. Compare Rio Oso CDP against its county rather than against national figures.

The Census withheld gross rent for Rio Oso CDP because the sample was too thin to publish at this geography. Those values were suppressed at the source, not lost in our dataset, and we do not model a replacement. Everything else on this page comes straight from the ACS 2019-2023 ACS 5-year tables.