Near the top of the list were Delaware County at number six and Broome County at number seven. “That is a pretty significant portion of our population that is over 80,” said Holochak. “So, we do know they are more at risk. They are part of the population we are putting most of our efforts in.” Following shortly down the lines of 62 counties, Chenango came in at 13 and Tioga at 30. (WBNG) — After Cornell University released a study of the most vulnerable counties in New York, 12 News caught up with local health officials on why some Southern Tier areas ranked so high. Meanwhile, Broome County Public Health Director, Rebecca Kaufman, says the county’s ranking is also due to the older population as well as people grouped in larger facilities such as nursing homes. She says in response to this and other data they are looking at, they have specifically been working with the county to assist the elderly population. “A lot of the group living facilities or senior living facilities will work with the emergency operations center in both planning and procurement of PPE,” said Kaufman. More information on this study can be found on Cornell University’s website. Neighboring counties ranked lower on the list, such as Tompkins County at 52. Kylie Holochak from the Tioga County Health Department says she’s not alarmed by the ranking, adding that more than five percent of the county’s population is people over 80 years old. Holochak says in Tioga County, officials have seen an increase in family households, especially ones with three generations in one home. She advises anyone who tests positive and lives at home to isolate in a part of the home and dedicate a bathroom solely to the individual who is sick.