Leighton, IA has a population of 193 and is the 24,617th largest city in the United States. The population density is 2,030 per sq mi which is 3462% higher than the Iowa average and 2141% higher than the national average. The median age in Leighton is 37 which is approximately 2% lower than the Iowa average of 38. In Leighton, 71% of the population over 15 years of age are married, 97% speak English and 3% speak Spanish. 88% of Leighton residents were born in Iowa, 12% were born out of state, 0% were born outside of the United States and 0% were foreign born.