Basin, WY has a population of 1,551 and is the 12,485th largest city in the United States. The population density is 650 per sq mi which is 10928% higher than the Wyoming average and 617% higher than the national average. The median age in Basin is 49 which is approximately 32% higher than the Wyoming average of 37. In Basin, 50% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 43% of Basin residents were born in Wyoming, 55% were born out of state, 1% were born outside of the United States and 1% were foreign born.