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 | Official name: State of New Jersey New Jersey postal code abbreviation: NJ You may also be interested in the answers to the following questions: Total area: 22 608 km2 ✅ What is the largest city by population in New Jersey?- Largest New Jersey cities by population: Newark ✅ What is the capital of New Jersey?- State capital of New Jersey: Trenton ✅ What is the population of New Jersey?- New Jersey state population 2025: 8 821 155 |