Nederland, CO has a population of 1,560 and is the 12,463rd largest city in the United States. The population density is 1,055 per sq mi which is 2020% higher than the Colorado average and 1065% higher than the national average. The median age in Nederland is 37 which is approximately 1% higher than the Colorado average of 36. In Nederland, 40% of the population over 15 years of age are married, 93% speak English and 3% speak Spanish. 32% of Nederland residents were born in Colorado, 63% were born out of state, 1% were born outside of the United States and 4% were foreign born.