Cy-Fair Volunteer Fire Department is a combination fire department headquartered at 9630 Telge Road in unincorporated Harris County, Texas, United States.
The department serves the Cypress and Fairbanks (collectively known as Cypress-Fairbanks or Cy-Fair since 1962) communities in unincorporated Harris County. Cy-Fair VFD serves over 350,000 people over a 180-square-mile (470 km2) area and responds to more than 19,000 incidents each year. With over 500 members and 12 stations, Cy-Fair VFD is the largest volunteer fire department in the United States.
Cy-Fair VFD is a combination department utilizing both volunteers and paid crews. During the standard work week and work day, one station from each of the three districts, two heavy-rescue trucks, and one ladder truck is manned with a paid staff in order to provide a timelier response. Cy-Fair's ambulances are manned with a paid staff 24 hours a day, year-round.