The average library clerk salary at Pomona was $18,142 , which is 65 percent lower than the average salary for this job in California, and 41 percent lower than the national average for this job . Library Clerk salaries at Pomona typically range from $15,538 to $21,816 (25th to 75th percentile). The highest reported library clerk salary was $22,731. There are 6 employees at Pomona with the job title library clerk.