Springfield, CO has a population of 1,430 and is the 12,973rd largest city in the United States. The population density is 1,270 per sq mi which is 2450% higher than the Colorado average and 1301% higher than the national average. The median age in Springfield is 44 which is approximately 20% higher than the Colorado average of 36. In Springfield, 60% of the population over 15 years of age are married, 94% speak English and 4% speak Spanish. 53% of Springfield residents were born in Colorado, 45% were born out of state, 0% were born outside of the United States and 1% were foreign born.