Tehachapi, CA has a population of 13,179 and is the 3,168th largest city in the United States. The population density is 1,333 per sq mi which is 474% higher than the California average and 1371% higher than the national average. The median age in Tehachapi is 38 which is approximately 5% higher than the California average of 36. In Tehachapi, 43% of the population over 15 years of age are married, 72% speak English and 24% speak Spanish. 68% of Tehachapi residents were born in California, 19% were born out of state, 1% were born outside of the United States and 12% were foreign born.