Oildale, CA has a population of 34,277 and is the 1,233rd largest city in the United States. The population density is 5,247 per sq mi which is 2158% higher than the California average and 5691% higher than the national average. The median age in Oildale is 33 which is approximately 7% lower than the California average of 36. In Oildale, 44% of the population over 15 years of age are married, 90% speak English and 8% speak Spanish. 79% of Oildale residents were born in California, 16% were born out of state, 1% were born outside of the United States and 4% were foreign born.