Addison is in Somerset County, Pennsylvania. It is designated as a borough, and is part of the Somerset Metro Area. It has a total area of 0.6 square miles, all of which is land.
Manufacturing, construction, wholesale trade and tourism are the major commercial activities here. Juergensen Airpark And Maritime Facility Airport is the local airport. The closest hospital is the Somerset Hospital, located about 22 miles away in Somerset. The cost of living here is 12.90% lower than the country average.
This place gets about 44 inches of rain annually. The number of days with measurable precipitation is 164. Snowfall is about 60 inches annually.