Population Demographics
As of 2026 the population of Kitsap County is 286,737. The population is expected to grow to 294,311 by 2031 - a growth rate of 0.52%.
The median age of Kitsap County residents is 41.
The diversity index of Kitsap County is 54.6, meaning that there is a 55% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.



