AreaVibes reveals the best places to live in Ohio for 2016 using our Livability Score. The Livability Score for each city in Ohio is calculated out of 100 from a unique algorithm based on various metrics, including: amenities, cost of living, crime, education, employment, housing and weather. Ohio has a population of 11,560,380 and a population density of 257.5 people per square mile. The capital city is Columbus and the largest city in Ohio is Columbus. To filter the results, use the dropdown options to sort by population or category.