When the 40-district legislative map was created in 1973, the 30th District was based in Essex and Hudson counties. In consisted of the Ironbound neighborhood and a part of the North Ward of Newark and Belleville in Essex County, and Harrison, East Newark, Kearny, and Secaucus in Hudson County. This district elected one of the fewindependents ever elected to the Legislature when in 1973, controversial Newark activist Anthony Imperiale won a term in the Senate in 1973, though he would later serve in the Assembly from the district as a Republican. In the 1980s, the 30th shifted slightly to the northwest when it encompassed Belleville, Bloomfield, Nutley, Glen Ridge, Montclair, Verona, and Cedar Grove, entirely in Essex County. As the population began to shift away from the immediate suburbs of New Jersey cities in the 1980s, the 1991 Apportionment Commission using data collected from the 1990 Census eliminated the 30th District as it existed in Essex County and shifted it to the fast-growing areas of Burlington, Monmouth, and Ocean counties. The new 30th District created in 1991 consisted of northern corner of Burlington County including Pemberton Borough and Township, Eastampton Township, Florence Township, Bordentown City and Township, the four panhandle municipalities of Monmouth County, and Ocean County's Plumsted, Jackson, and Lakewood townships. Though unaffiliated voters make up most of the district, they tend to vote for the Republican candidates in this area and no Democrat has been elected to the 30th since it moved to this area. In the 2001 redistricting, municipalities in the Burlington County portion of the district were removed leaving only the ones on the edge of the county from Bordentown Township and Fieldsboro to New Hanover; Millstone Township was also removed. Added in this redistricting were Washington Township in Mercer County and Monmouth's Howell Township and Farmingdale. The 2011 redistricting compacted the district to Lakewood, Wall, and Howell townships, and other shoreline boroughs. As a result of the district shift, incumbent Assemblyman Joseph R. Malone announced his retirement and incumbent 11th District Senator Sean T. Kean dropped down to running for an Assembly seat to avoid a primary fight with Senator Robert Singer. Assemblyman Dave Rible resigned his seat on July 17, 2017, to become Director of the New Jersey Division of Alcoholic Beverage Control. Former Wall Township Mayor Ned Thomson was selected by local Republican committee members as a replacement from a ballot of three candidates, and was sworn in on August 24. Senators and Assembly members elected from the district are as follows: