Williamsdale, OH has a population of 796 and is the 16,637th largest city in the United States. The population density is 4,570 per sq mi which is 1674% higher than the Ohio average and 4944% higher than the national average. The median age in Williamsdale is 34 which is approximately 13% lower than the Ohio average of 39. In Williamsdale, 56% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 89% of Williamsdale residents were born in Ohio, 11% were born out of state, 0% were born outside of the United States and 0% were foreign born.