WPBS-TV can be seen by a total of 2.2 million viewers. This is despite the fact it is the smallest PBS member in New York State; there are only 252,000 people in its American viewing area. However, the signal from its two towers reaches far enough to serve the Ottawa Valley region via cable. This market, with over 1.5 million people–almost six times the population of WPBS' American viewing area)–is the fourth-largest in Canada. Much of WPBS' viewer support has also come from Canadian viewers, as 70% of donations during recent pledge drives came from viewers in Ottawa. The station also maintains a mailing address in Gananoque, Ontario to service its Canadian donors.