If Foxconn does hit its benchmarks, it will invest at least $9 billion in the facility. It must employ at least 260 workers by 2018 and 3,640 by 2021, 7,800 by 2024 and 10,400 by 2027 to get any job-related tax incentives,. It would need to eventually hit 13,000 to earn the maximum payout. Foxconn would need to pay those workers at least $30,000 annually, with an average salary of at least $53,875 — slightly below the county's median household income, $55,584, according to the most recent U.S. Census Bureau data.