[4] On May 19, 2008,[5] a large part of the former Prince of Wales–Outer Ketchikan Census Area was annexed, including the remainder of Misty Fjords National Monument that was not already in the borough, making the current figures much larger than these.

A map of the current area can be seen here:[6] As of the census of 2010, there were 13,477 people, 5,305 households, and 3,369 families residing in the borough.

The racial makeup of the borough was 68.7% White, 0.7% Black or African American, 14.3% Native American, 7.1% Asian (5.8% Filipino, 0.3% Chinese, 0.2% Japanese), 0.2% Pacific Islander (0.1% Hawaiian), 0.7% from other races, and 8.3% from two or more races.

Ketchikan Gateway Borough is strongly conservative, and has voted Republican all but once since statehood in 1959.

Ketchikan Gateway Borough has mirrored Alaska’s choice for the statewide presidential winner in every election since 1960.