The 2014 Klamath Falls, Oregon, population is 20,943. There are 1,057 people per square mile (population density).
The median age is 35. The US median is 37.2. 46.23% of people in Klamath Falls, Oregon, are married. 16.16% are divorced.
The average household size is 2.23 people. 28.04% of people are married, with children. 21.27% have children, but are single.
85.88% of people are white, 0.97% are black, 2.22% are asian, 4.98% are native american, and 1.51% claim 'Other'.
12.12% of the people in Klamath Falls, Oregon, claim hispanic ethnicity (meaning 87.88% are non-hispanic).