JOSEPH CHARLES HAINSWORTH was a third-generation member of the Hainsworth family, who were very active in Camden's civic and political life from the 1910s to the mid-1980s. Grandfather John James Hainsworth was a Democrat political leader in the old Eighth Ward and a power in the city Democrat organization. Father John James Hainsworth Jr., better known as J. James Hainsworth or "Big Jim" Hainsworth, served two terms as as Camden County's shriff and held many other posts over his long career. His brother, J. James "Jim" Hainsworth was active politically in Camden and in Haddon Heights, and a first cousin, James R. Asher served for many years as a member of the Camden Fire Department.

After serving for three and one-half years with the United States Marine Corps during the Korean War, Joseph C. Hainsworth was 

appointed to the Camden Police Department. He was promoted to detective in 1958, to sergeant in 1964, to lieutenant in 1969, and to Captain in 1971. He retired in 1985. He had been in command of the Police Department's support service division.

Joseph C. Hainsworth passed away on December 25, 1991, survived by his wife Norma June and daughters Stephanie and Nicole.