Highest Union City employee salary in year 2018 was $281,204. Union City employees number in year 2018 was 431. Union City average salary was $67,695 and median salary was $50,000. According to the last payroll, Union City average salary is 9 percent lower than USA average and 9 percent lower than New Jersey state average. Union City employee salaries are usually between $29,680 and $110,630. Top 10% of highest-earning employees have salaries ranging from $128,820 to $281,204. From 2017 to 2018, the average salary of employees at this employer increased 2.9 percent.