Lincoln, CA has a population of 45,675 and is the 899th largest city in the United States. The population density is 1,943 per sq mi which is 736% higher than the California average and 2044% higher than the national average. The median age in Lincoln is 43 which is approximately 19% higher than the California average of 36. In Lincoln, 71% of the population over 15 years of age are married, 81% speak English and 12% speak Spanish. 59% of Lincoln residents were born in California, 27% were born out of state, 1% were born outside of the United States and 13% were foreign born.