Three Rocks, California Demographics & Population 2026

A note before these figures: with a population of 162, Three Rocks's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Three Rocks is a small community located in California, within Fresno County. The total population is 162. It ranks as the 1403rd most populous out of 1,570 Census-designated places in California.

Age Demographics

The median age in Three Rocks is 50.9 years. This is 34% higher than the state median of 37.9 years. Only 14.2% of residents are under 18, indicating fewer families with children. 19.8% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Three Rocks is $89,083. This is 10% lower than the state median of $99,122. It is also 10% higher than the national median of $80,734. The poverty rate stands at 10.5%. This is 13% lower than the state poverty rate of 12.0%. The unemployment rate is 3.5%. This is 47% lower than the state rate of 6.6%. The median home value is $132,500. Housing costs are 82% lower than the state median of $734,700. With a home-value-to-income ratio of just 1.5x, Three Rocks is one of the most affordable housing markets in the area. 82.2% of occupied housing units are owner-occupied. This homeownership rate is 47% higher than the state average of 55.9%.

Race & Ethnicity

Every resident counted in Three Rocks was recorded as Hispanic or Latino. A figure of exactly 100.0% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.

Education

2.2% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. This is 94% lower than the state rate of 37.1%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 60.3%.

Data Sources & Methodology

All demographic data for Three Rocks, California is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against California state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,570 Census-designated places in California. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.