According to the United States Census Bureau, the borough is the largest incorporated city by area in the U.S., with a total area of 4,811 square miles (12,460.4 km²), of which 2,870 square miles (7,400 km²) is land and 1,941 square miles (5,030 km²) (40.3%) is water.
 As a comparison, this is almost four times the size of the state of Rhode Island.

Sitka displaced Juneau, Alaska as the largest incorporated city by area in the United States upon the 2000 incorporation with 2,874 square miles (7,440 km²) of incorporated area.
Juneau's incorporated area is 2,717 square miles (7,040 km²).
Jacksonville, Florida, is the largest city in area in the contiguous 48 states at 758 square miles (1,960 km²).
According to the United States Census Bureau, the borough is the largest incorporated city by area in the U.S., with a total area of 4,811 square miles (12,460.4 km²), of which 2,870 square miles (7,400 km²) is land and 1,941 square miles (5,030 km²) (40.3%) is water.  As a comparison, this is almost four times the size of the state of Rhode Island.
Sitka displaced Juneau, Alaska as the largest incorporated city by area in the United States upon the 2000 incorporation with 2,874 square miles (7,440 km²) of incorporated area. Juneau's incorporated area is 2,717 square miles (7,040 km²). Jacksonville, Florida, is the largest city in area in the contiguous 48 states at 758 square miles (1,960 km²).
Sitka, Alaska