Dublin, OH has a population of 43,874 and is the 933rd largest city in the United States. The population density is 1,787 per sq mi which is 594% higher than the Ohio average and 1873% higher than the national average. The median age in Dublin is 40 which is approximately 1% higher than the Ohio average of 39. In Dublin, 71% of the population over 15 years of age are married, 82% speak English and 2% speak Spanish. 57% of Dublin residents were born in Ohio, 26% were born out of state, 1% were born outside of the United States and 16% were foreign born.