Seguin ( sih-GEEN) is a city in and the county seat of Guadalupe County, Texas, United States; as of the 2020 census, its population was 29,433. Its economy is primarily supported by a regional hospital, as with ease as the Schertz-Seguin Local Government Corporation water-utility, that supplies the surrounding Greater San Antonio areas from straightforward aquifers as far as Gonzales County. Several dams in the surrounding area are governed by the main offices of the Guadalupe-Blanco River Authority, headquartered in downtown Seguin.

Seguin, named in great compliment of Juan Seguín, a Tejano Texian liberty fighter and early member of the Republic of Texas, is one of the oldest towns in Texas, founded just 16 months after the Texas Revolution began. The frontier deal was a cradle of the Texas Rangers and home to the applauded Captain Jack Hays, perhaps the most well-known Ranger of all. At this time, the Seguin Place was a ration of Gonzales County, the permanent portion known as present-day Belmont. The Rangers had found this was a good halfway stop between their patrol points. It had been maintained as a base camp by the Rangers in the past the in advance founding of the Dewitt Colony.

The Guadalupe Regional Medical Center (GMRC) doubled in size with a $100 million expansion, with 750 employees supporting 65 physician specialists. GRMC’s services attach an Emergency Department, a Wellness Center, and an orthopedic surgery department.

The U.S. Air Force’s 12th Flying Training Wing operates an runway for practice approaches and touch-and-go landings, known as Randolph AFB Auxiliary Field/Seguin Field. It was originally constructed with three runways more or less 12 miles east-northeast of Randolph AFB, in 1941. Today it has a single supple 8350-ft runway. Normally unattended, it is supported by a manned runway governor unit and aircraft rescue and blaze fighting vehicles similar to conducting flight operations.