The Finthen Volunteer Fire Department was founded on January 21, 1871. Today, it is housed in a fire station on Kirchgasse that opened in 1971. Around 35 firefighters are active in the operations department. In addition to Finthen, the volunteer fire department is also responsible for the Layenhof district.

On average, the firefighters respond to around 90 calls per year. Since Finthen is located somewhat outside the city center, the volunteer firefighters are alerted around the clock to nearly all urgent firefighting calls in the district and respond in addition to the professional firefighters.

A special feature is the tank fire engine (TLF20/40-SL) stationed in Finthen. As there are only two of these vehicles available in Mainz, the vehicle is also used for many emergency calls outside the district and outside the city of Mainz. As with almost all volunteer fire departments, new recruits are recruited from a very active children's and youth program.