There are 241 Martial Arts Instruction Classes in Oregon, serving a population of 4,025,127 people in an area of 95,963 square miles. There is 1 Martial Arts Instruction Class per 16,701 people, and 1 Martial Arts Instruction Class per 398 square miles.
The state of Oregon is ranked 8th in Martial Arts Instruction Classes per capita, and 34th in Martial Arts Instruction Classes per square mile.