The average cook salary at Story County was $49,258 , which is 60 percent higher than the average salary for this job in Iowa, and 30 percent higher than the national average for this job . Cook salaries at Story County typically range from $45,584 to $52,932 (25th to 75th percentile). The highest reported cook salary was $52,932. There are 2 employees at Story County with the job title cook.