Cedar Lake, IN has a population of 11,872 and is the 3,444th largest city in the United States. The population density is 1,408 per sq mi which is 684% higher than the Indiana average and 1454% higher than the national average. The median age in Cedar Lake is 35 which is approximately 6% lower than the Indiana average of 37. In Cedar Lake, 57% of the population over 15 years of age are married, 95% speak English and 2% speak Spanish. 55% of Cedar Lake residents were born in Indiana, 42% were born out of state, 0% were born outside of the United States and 3% were foreign born.