The average custodian salary at Shawnee County was $25,165 , which is 14 percent lower than the average salary for this job in Kansas, and 65 percent lower than the national average for this job . Custodian salaries at Shawnee County typically range from $20,627 to $29,703 (25th to 75th percentile). The highest reported custodian salary was $30,272. There are 5 employees at Shawnee County with the job title custodian.