Madera County was formed in 1893 from the southern part of Mariposa County during a special election held on May 16, 1893. Citizens residing in the area that was to become Madera County voted 1,179 to 358 for establishment of the new county.[5]

Madera is the Spanish term for wood.[6] The county derives its name from the town of Madera, named when the California Lumber Company built a log flume to carry lumber to the Central Pacific Railroad there in 1876.[7]

The Madera County Sheriff's Department employed the first woman in California to die in the line of duty as a sworn law enforcement officer—Tulare native Lucille Helm (1914-1959). For 15 years, the Madera housewife and mother of four worked on call as a "matron" assisting with female transfers.[8]

There are 36,155 households out of which 40.2% have children under the age of 18 living with them, 60.9% are married couples living together, 12.2% have a female householder with no husband present, and 20.9% are non-families. 16.5% of all households are made up of individuals and 7.7% have someone living alone who is 65 years of age or older. The average household size is 3.18 and the average family size is 3.52.

In the county the population is spread out with 29.6% under the age of 18, 9.9% from 18 to 24, 29.1% from 25 to 44, 20.4% from 45 to 64, and 11.0% who are 65 years of age or older. The median age is 33 years. For every 100 females there are 91.8 males. For every 100 females age 18 and over, there are 86.0 males.

The median income for a household in the county is $36,286, and the median income for a family is $39,226. Males have a median income of $33,658 versus $24,415 for females. The per capita income for the county is $14,682. 21.4% of the population and 15.9% of families are below the poverty line. Out of the total population, 28.6% of those under the age of 18 and 9.0% of those 65 and older are living below the poverty line.

The Chowchilla/Madera County Fairgrounds hosts the Chowchilla Junior Fair, founded in 1946, and the Chowchilla Western Stampede. It also houses the Chowchilla Speedway, a 1/3 mile dirt track, and the Associated Feed Pavilion, a covered arena. The venue hosts numerous horse events and auctions, a Spring Festival barbecue, and other public and private events.[29]