Hastings County is located in the province of Ontario, Canada. Geographically, it is located on the border of Eastern Ontario and Central Ontario. Hastings County is the second-largest county in Ontario, after Renfrew County, and its county seat is Belleville, which is independent of Hastings County. Hastings County has trademarked the moniker "Ch…Hastings County is located in the province of Ontario, Canada. Geographically, it is located on the border of Eastern Ontario and Central Ontario. Hastings County is the second-largest county in Ontario, after Renfrew County, and its county seat is Belleville, which is independent of Hastings County. Hastings County has trademarked the moniker "Cheese Capital of Canada".