Mad River Flag

Mad River

County:
Trinity County
County Seat:
No
Area (mi²):
35.186
State:
California

Mad River is a CDP located in Trinity County, California. Mad River has a 2026 population of 573. Mad River is currently growing at a rate of 1.78% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median age in Mad River is 59.1 years: 62.2 years for males, and 57.5 years for females. For every 100 females there are 76.6 males.

573
Total Population
16
Density (mi²)
10 1.78%
Growth

Mad River Population

Mad River Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026573101.78%
202556391.62%

Median Age

Overall: 59.1 years
Female: 57.5 years
Male: 62.2 years

Mad River Adults

There are 209 adults, (21 of whom are seniors) in Mad River.

Sex Ratio

Female: 154 (56.6%)
Male: 118 (43.4%)

Demographics

The racial composition of Mad River includes 79.41% White, and smaller percentages for Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White21679.41%
Two or more races5018.38%
Native American62.21%
Race
Population ↓
Percentage (of total)
Two or more races269.56%
Race
Population ↓
Percentage (of total)
White21679.41%
Two or more races248.82%
Native American62.21%

Mad River Marital Status

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)