New Holland, OH has a population of 725 and is the 17,251st largest city in the United States. The population density is 370 per sq mi which is 44% higher than the Ohio average and 309% higher than the national average. The median age in New Holland is 46 which is approximately 17% higher than the Ohio average of 39. In New Holland, 58% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 91% of New Holland residents were born in Ohio, 8% were born out of state, 1% were born outside of the United States and 0% were foreign born.