Line chart showing the share of Ohioans that are 65+ years, by county every 10 years from 2010 to 2050. Most counties are projected to grow older by 2050. Highland County is an exception, decreasing from 15.2% in 2010 to 11.1% in 2050. In 2050, 14.5% of Franklin County is expected to be 65+ years compared to the statewide average of 18.7%.