Peter also known as Petersboro is a census-designated place (CDP) on the west-central edge of Cache County, Utah, United States.

It is included in the Logan, Utah-Idaho (partial) Metropolitan Statistical Area.

[2] The area is named for Peter Maughan, an early Mormon settler and church leader.

Each year residents of Petersboro participate with Mendonites in their May Day celebration.

11.6% of all households were made up of individuals, and 4.3% had someone living alone who was 65 years of age or older.