Norwalk, CA has a population of 106,360 and is the 283rd largest city in the United States. The population density is 10,955 per sq mi which is 4179% higher than the California average and 11992% higher than the national average. The median age in Norwalk is 35 which is approximately 3% lower than the California average of 36. In Norwalk, 51% of the population over 15 years of age are married, 33% speak English and 54% speak Spanish. 58% of Norwalk residents were born in California, 6% were born out of state, 1% were born outside of the United States and 35% were foreign born.