Highest Plain City employee salary in year 2023 was $115,206. Plain City employees number in year 2023 was 140. Plain City average salary was $8,396 and median salary was $1,360. According to the last payroll, Plain City average salary is 89 percent lower than USA average and 83 percent lower than Utah state average. Plain City employee salaries are usually between $364 and $7,155. Top 10% of highest-earning employees have salaries ranging from $19,208 to $115,206.