Nipomo, CA has a population of 16,456 and is the 2,595th largest city in the United States. The population density is 1,108 per sq mi which is 377% higher than the California average and 1123% higher than the national average. The median age in Nipomo is 39 which is approximately 8% higher than the California average of 36. In Nipomo, 59% of the population over 15 years of age are married, 71% speak English and 27% speak Spanish. 68% of Nipomo residents were born in California, 18% were born out of state, 1% were born outside of the United States and 13% were foreign born.