Average mortgage rates in New Jersey decreased by 8.86% from Q1 to Q2 of 2025, reaching 6.85%, but the state ranked 47th out of 50 for the largest decrease. New Jersey's rates remain higher than the national average, with a 30-year mortgage APR at 6.445% and a 15-year fixed rate at 5.518%. The refinance rate is 6.525%, slightly above the national average.