West Rancho Dominguez, CA has a population of 22,724 and is the 1,910th largest city in the United States. The population density is 5,719 per sq mi which is 2361% higher than the California average and 6212% higher than the national average. The median age in West Rancho Dominguez is 34 which is approximately 4% lower than the California average of 36. In West Rancho Dominguez, 43% of the population over 15 years of age are married, 52% speak English and 46% speak Spanish. 61% of West Rancho Dominguez residents were born in California, 15% were born out of state, 1% were born outside of the United States and 23% were foreign born.