North Rock Springs, WY has a population of 2,098 and is the 10,735th largest city in the United States. The population density is 142 per sq mi which is 2314% higher than the Wyoming average and 57% higher than the national average. The median age in North Rock Springs is 32 which is approximately 14% lower than the Wyoming average of 37. In North Rock Springs, 62% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 45% of North Rock Springs residents were born in Wyoming, 54% were born out of state, 0% were born outside of the United States and 1% were foreign born.