Mexican Colony, CA has a population of 368 and is the 21,332nd largest city in the United States. The population density is 11,579 per sq mi which is 4423% higher than the California average and 12681% higher than the national average. The median age in Mexican Colony is 20 which is approximately 43% lower than the California average of 36. In Mexican Colony, 27% of the population over 15 years of age are married, 18% speak English and 82% speak Spanish. 68% of Mexican Colony residents were born in California, 2% were born out of state, 0% were born outside of the United States and 31% were foreign born.