The average naturalist salary at Dallas County was $59,229 , which is 7 percent higher than the average salary for this job in Iowa, and 38 percent higher than the national average for this job . Naturalist salaries at Dallas County typically range from $48,646 to $64,535 (25th to 75th percentile). The highest reported naturalist salary was $64,535. There are 3 employees at Dallas County with the job title naturalist.