What is the largest US city on Lake Ontario?

There are many Canadian cities on Lake Ontario. The major ones are Toronto and Hamilton, but here is a complete list:

• Ajax, Ontario
• Belleville, Ontario
• Burlington, Ontario
• Hamilton, Ontario
• Kingston, Ontario
• Mississauga, Ontario
• Oakville, Ontario
• Oshawa, Ontario
• Pickering, Ontario
• St. Catharines, Ontario
• Toronto, Ontario
• Whitby, Ontario