Pleasanton, CA has a population of 77,046 and is the 456th largest city in the United States. The population density is 3,193 per sq mi which is 1274% higher than the California average and 3424% higher than the national average. The median age in Pleasanton is 42 which is approximately 17% higher than the California average of 36. In Pleasanton, 68% of the population over 15 years of age are married, 68% speak English and 5% speak Spanish. 49% of Pleasanton residents were born in California, 23% were born out of state, 1% were born outside of the United States and 27% were foreign born.