Mud Lake, ID has a population of 488 and is the 19,692nd largest city in the United States. The population density is 3,414 per sq mi which is 17794% higher than the Idaho average and 3668% higher than the national average. The median age in Mud Lake is 22 which is approximately 40% lower than the Idaho average of 36. In Mud Lake, 60% of the population over 15 years of age are married, 55% speak English and 45% speak Spanish. 67% of Mud Lake residents were born in Idaho, 15% were born out of state, 3% were born outside of the United States and 15% were foreign born.