New Washington, OH has a population of 940 and is the 15,514th largest city in the United States. The population density is 684 per sq mi which is 166% higher than the Ohio average and 655% higher than the national average. The median age in New Washington is 37 which is approximately 6% lower than the Ohio average of 39. In New Washington, 66% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 89% of New Washington residents were born in Ohio, 11% were born out of state, 0% were born outside of the United States and 0% were foreign born.