Usa-Places.com listou aprox 13 bancos dentro Watertown. Alguns dos mais bem avaliados bancos dentro Watertown estão- Watertown Savings Bank - Escritório Central, Woodforest Bank, Poupança de Cartago, Watertown Savings Bank - Commerce Park, Community Bank N.A., Community Bank N.A., Watertown Savings Bank - Clinton St Drive Thru, Watertown Savings Bank - State St Branch, Banco de Chaves & Farm Credit East.