In New Jersey, the industry contributing the most to GDP is real estate and rental and leasingProfessional, scientific, and technical services ranks as secondWholesale trade comes in thirdThe Industries Making The Most Money In Each US StateQ4 2022 hedge fund letters, conferences and more The industries making the most money in New Jersey are as follows: 1. Real estate and rental and leasing: In the second quarter of 2022, in the state of New Jersey, the Real estate and rental and leasing industry produced $107,540,800,000 GDP.2. Professional, scientific, and technical services: This industry …