Ault, CO has a population of 1,869 and is the 11,423rd largest city in the United States. The population density is 1,688 per sq mi which is 3289% higher than the Colorado average and 1763% higher than the national average. The median age in Ault is 32 which is approximately 13% lower than the Colorado average of 36. In Ault, 55% of the population over 15 years of age are married, 85% speak English and 14% speak Spanish. 63% of Ault residents were born in Colorado, 31% were born out of state, 1% were born outside of the United States and 5% were foreign born.