Fillmore is an unincorporated community in Dubuque County, Iowa, United States.

The community is located along U.S. Route 151, 5.2 miles (8.4 km) east-northeast of Cascade.

[4] Residents are zoned to the Western Dubuque Community School District.

They are assigned to Cascade Elementary School[5] and Cascade Junior/Senior High School, both in Cascade.

This article about the geography of Dubuque County, Iowa is a stub.