Founded nearly seven decades ago, the Parker County Sheriff's Posse preserves and celebrates the unique culture of the region. It began as a gathering of 13 men who met in January of 1947 at Roger Williams Manufacturing, where the members chose their first officers. The organization grew quickly and soon moved to the local American Legion building, at which meetings continued until the group became so large as to require a dedicated space. By the end of its first year, the posse had a 37-acre site that remains its home to this day.
The Parker County Sheriff's Posse continues to fulfill its mission of promoting fellowship, sportsmanship, and the traditions of the West. It sponsors a number of events throughout the year, including the Frontier Days Rodeo in June and the Posse Ranch Rodeo in September. Members also ride out regularly in local parades like the Fredericksburg Parade and the Forth Worth Stock Show Parade. All posse members own horses, which are in their own right valued members of the organization.