Crystal Lakes, OH has a population of 1,316 and is the 13,485th largest city in the United States. The population density is 2,777 per sq mi which is 978% higher than the Ohio average and 2965% higher than the national average. The median age in Crystal Lakes is 35 which is approximately 11% lower than the Ohio average of 39. In Crystal Lakes, 64% of the population over 15 years of age are married, 89% speak English and 11% speak Spanish. 72% of Crystal Lakes residents were born in Ohio, 23% were born out of state, 0% were born outside of the United States and 4% were foreign born.