The average ranger salary at City of Boulder was $64,392 , which is 20 percent higher than the average salary for this job in Colorado, but 20 percent lower than the national average for this job . Ranger salaries at City of Boulder typically range from $60,175 to $66,248 (25th to 75th percentile). The highest reported ranger salary was $69,222. There are 12 employees at City of Boulder with the job title ranger.