The average police sgt salary at Petaluma was $279,812 , which is 16 percent higher than the average salary for this job in California, and 162 percent higher than the national average for this job . Police Sgt salaries at Petaluma typically range from $274,206 to $302,712 (25th to 75th percentile). The highest reported police sgt salary was $341,727. There are 12 employees at Petaluma with the job title police sgt.