Highest salary at Freeport Sd 145 in year 2018 was $94,654. Number of employees at Freeport Sd 145 in year 2018 was 437. Average annual salary was $19,000 and median salary was $14,666. Freeport Sd 145 average salary is 59 percent lower than USA average and median salary is 66 percent lower than USA median salary.