Custar, OH has a population of 118 and is the 26,470th largest city in the United States. The population density is 471 per sq mi which is 83% higher than the Ohio average and 420% higher than the national average. The median age in Custar is 36 which is approximately 9% lower than the Ohio average of 39. In Custar, 58% of the population over 15 years of age are married, 98% speak English and 0% speak Spanish. 84% of Custar residents were born in Ohio, 15% were born out of state, 1% were born outside of the United States and 0% were foreign born.