Livermore, CA has a population of 86,493 and is the 385th largest city in the United States. The population density is 3,209 per sq mi which is 1281% higher than the California average and 3442% higher than the national average. The median age in Livermore is 39 which is approximately 9% higher than the California average of 36. In Livermore, 62% of the population over 15 years of age are married, 79% speak English and 12% speak Spanish. 61% of Livermore residents were born in California, 21% were born out of state, 2% were born outside of the United States and 16% were foreign born.