Stonyford (formerly, Stony Ford) is a census-designated place in Colusa County, California. It lies at an height of 1184 feet (361 m). Its zip code is 95979 and its Place code is 530. Stonyford’s population was 149 at the 2010 census.

The 2010 United States Census reported that Stonyford had a population of 149. The population density was 51.4 inhabitants per square mile (19.8/km²). The racial makeup of Stonyford was 127 (85.2%) White, 0 (0.0%) African American, 4 (2.7%) Native American, 0 (0.0%) Asian, 1 (0.7%) Pacific Islander, 12 (8.1%) from further races, and 5 (3.4%) from two or more races. Hispanic or Latino of any race were 22 persons (14.8%).

The Census reported that 149 people (100% of the population) lived in households, 0 (0%) lived in non-institutionalized work quarters, and 0 (0%) were institutionalized.

There were 69 households, out of which 15 (21.7%) had children under the age of 18 successful in them, 33 (47.8%) were heterosexual married couples blooming together, 10 (14.5%) had a female householder taking into account no husband present, 4 (5.8%) had a male householder behind no wife present. There were 4 (5.8%) unmarried heterosexual partnerships, and 1 (1.4%) homosexual married couples or partnerships. 17 households (24.6%) were made happening of individuals, and 5 (7.2%) had someone blooming alone who was 65 years of age or older. The average household size was 2.16. There were 47 families (68.1% of whatever households); the average intimates size was 2.51.