Colma, CA has a population of 1,540 and is the 12,525th largest city in the United States. The population density is 808 per sq mi which is 248% higher than the California average and 792% higher than the national average. The median age in Colma is 33 which is approximately 8% lower than the California average of 36. In Colma, 46% of the population over 15 years of age are married, 48% speak English and 33% speak Spanish. 56% of Colma residents were born in California, 9% were born out of state, 1% were born outside of the United States and 35% were foreign born.