The Cattaraugus County Legislative District 1 represents the following municipalities:
- Town of Dayton (2010 Census pop. 1,886)
- Town of New Albion (2010 Census pop. 1,972)
- Town of Otto (2010 Census pop. 808)
- Town of Perrysburg (2010 Census pop. 1,626)
- Town of Persia (2010 Census pop. 2,404)
- Portion of Cattaraugus Territory of the Seneca Nation of Indians