Courthouse history
Conroe's Courthouse Tells the County Seat Story
The courthouse in downtown Conroe is more than a place for court dates. It sits in the middle of a county-seat story. Montgomery County was created by the Republic of Texas on December 14, 1837, and county business began in the town of Montgomery.
County government used three earlier courthouse buildings there. Two were small log cabins. One was a two-story wood building. After an 1889 election moved the county seat to Conroe, Isaac Conroe's home served as the temporary courthouse until a new one was built on the present site in 1891.
The 1936 courthouse now on the square is part of that longer chain. It stands at 301 N. Main Street and remains an active courthouse with Moderne style. So if downtown Conroe feels like the county's civic center, it earned that role through a real move: records, offices, courthouse, and all. The square is where the county finally landed.
Source to confirm: Texas Historical Commission Atlas - Montgomery County Courthouses