Cardington, OH has a population of 2,009 and is the 11,000th largest city in the United States. The population density is 1,001 per sq mi which is 289% higher than the Ohio average and 1005% higher than the national average. The median age in Cardington is 32 which is approximately 18% lower than the Ohio average of 39. In Cardington, 49% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 90% of Cardington residents were born in Ohio, 10% were born out of state, 0% were born outside of the United States and 0% were foreign born.