Dekker has remained a Sheboygan resident throughout his NBA career.
In November 2016, Dekker purchased a 1,568-square-foot condo on the Sheboygan River for $289,000.

In May 2017, Dekker became engaged to Olivia Harlan, an ESPN and SEC Network reporter, daughter of NBA announcer Kevin Harlan, and granddaughter of NFL Green Bay Packers Chairman Emeritus Bob Harlan.
The two were married on July 14, 2018.
Dekker has remained a Sheboygan resident throughout his NBA career. In November 2016, Dekker purchased a 1,568-square-foot condo on the Sheboygan River for $289,000.
In May 2017, Dekker became engaged to Olivia Harlan, an ESPN and SEC Network reporter, daughter of NBA announcer Kevin Harlan, and granddaughter of NFL Green Bay Packers Chairman Emeritus Bob Harlan. The two were married on July 14, 2018.
Sam Dekker