The Montgomery County Sheriff's Office is a law enforcement agency serving the citizens of Montgomery County, Texas. The 2010 census put Montgomery County's population at 455,746. A new estimate from 2019 places the population at 607,391. There are over 500 sworn deputies, with an additional 350 civilian support employees.
Montgomery County itself was first founded on 14 December 1837, and the Sheriff's office was founded the same day. Its first sheriff was Joshua Robbins, who served from 1837 to 1841. During the 19th and early 20th centuries, the primary goal of the department was to maintain law and order in a mostly rural county. In the mid-20th century, Montgomery County experienced significant growth in its population and economy. Therefore, the MCSO grew in size to continue maintaining order in a larger county. Additionally, it expanded its services to include specialized units such as narcotics investigators and detectives. In 1993, the MCSO moved its office to its current facility located in Conroe, which now houses its training and administrative facilities as well as a jail.
The following is a list of every Montgomery County sheriff:
MCSO is currently composed of nine divisions. These divisions are the Administrative Services division, the Jail division, the Patrol East division, the Patrol West division, The Woodlands Township division, the Criminal Investigations division, the Executive division, the Homeland Security division, and the Law Enforcement Services division.