Utility Worker - Assistant salary at King County

The average utility worker - assistant salary at King County was $49,569 , which is 52 percent higher than the average salary for this job in Washington, and 52 percent higher than the national average for this job . Utility Worker - Assistant salaries at King County typically range from $54,827 to $54,906 (25th to 75th percentile). The highest reported utility worker - assistant salary was $55,863. There are 5 employees at King County with the job title utility worker - assistant.