Crest, CA has a population of 2,733 and is the 9,292nd largest city in the United States. The population density is 419 per sq mi which is 80% higher than the California average and 362% higher than the national average. The median age in Crest is 46 which is approximately 29% higher than the California average of 36. In Crest, 57% of the population over 15 years of age are married, 81% speak English and 9% speak Spanish. 62% of Crest residents were born in California, 23% were born out of state, 2% were born outside of the United States and 14% were foreign born.