The New Jersey Constitution of 1947 (Annotated) Art. IV, § I, ¶ 2

2. No person shall be a member of the Senate who shall not have attained the age of thirty years, and have been a citizen and resident of the State for four years, and of the district for which he shall be elected one year, next before his election.  No person shall be a member of the General Assembly who shall not have attained the age of twenty-one years and have been a citizen and resident of the State for two years, and of the district for which he shall be elected one year, next before his election.  No person shall be eligible for membership in the Legislature unless he be entitled to the right of suffrage.