Geography of Montgomery County
Montgomery County sits at roughly 30.30° N and 95.50° W in the East Texas region of Texas, spanning 1,044 square miles of terrain that includes the landscape characteristic of the area — from open ranchland and farmland to small-town main streets. The county's centroid is near Conroe, and the county shares boundaries with 6 neighboring counties.
Population & demographics
With approximately 781,194 residents across 1,044 square miles, Montgomery County has a population density of about 748.3 people per square mile. It ranks among the more densely populated counties in Texas — a clear sign of metropolitan urbanization.
County seat: Conroe
Conroe serves as the seat of government for Montgomery County. The county courthouse, commissioners court, district clerk, and primary public records are located here. As with all 254 Texas counties, the county seat is the anchor of civic life and the principal address for elections, permits, and court filings.
History & name origin
Montgomery County was established in 1837 and was named for Montgomery, Texas, which was named for Andrew J. Montgomery, veteran in San Jacinto Battle in 1836.. It was carved from territory previously part of Washington County.
Montgomery County, Texas — frequently asked questions
Quick answers about Montgomery County geography, population, county seat, neighboring counties, and how to use the maps on this page. Every answer is generated from the official U.S. Census data backing this site.
Where is Montgomery County, Texas located?+
Montgomery County is located in the East Texas region of Texas at approximately 30.300° N, 95.503° W. It is one of the 254 counties of Texas and carries U.S. Census FIPS code 48339. The interactive map on this page renders the official U.S. Census TIGER boundary for Montgomery County over real-world OpenStreetMap, Esri satellite, and topographic basemaps.
How big is Montgomery County in square miles?+
Montgomery County covers approximately 1,044 square miles of land in the East Texas region — a mid-sized Texas county. By land area it ranks 66th out of 254 Texas counties. The full bounding box of the county is rendered to scale on the interactive map and matches the U.S. Census TIGER 2023 polygon.
What is the population of Montgomery County, Texas?+
Montgomery County has a population of approximately 781,194 residents. With 1,044 square miles of land, that works out to a population density of about 748.3 people per square mile, which is densely populated for a Texas county. That makes Montgomery County the 11th most populous of the 254 counties in Texas.
What is the county seat of Montgomery County?+
Conroe is the county seat of Montgomery County, Texas, which was organized in 1837 and named for Montgomery, Texas, which was named for Andrew J. Montgomery, veteran in San Jacinto Battle in 1836.. Montgomery County was originally carved out of Washington County. County government offices, courthouses, and most public records for Montgomery County are located in Conroe.
Which Texas counties border Montgomery County?+
Montgomery County shares borders with Grimes, Harris, San Jacinto, Waller, Liberty, and Walker counties. These 6 neighboring counties are highlighted on the schematic boundary map and linked at the bottom of this page so you can quickly compare population, area, and county seats across the East Texas region.
Where can I download or print a map of Montgomery County?+
A free, print-ready PDF map of Montgomery County is available from the "Download PDF" button at the top of this page. The printable layout uses authentic U.S. Census TIGER boundary geometry for Montgomery County, includes a Texas locator inset, and is sized for standard 8.5" × 11" Letter paper. For interactive use, the live Leaflet map on this page supports OpenStreetMap, Esri satellite, Esri topographic, and Carto light basemaps with zoom, scale bar, and fullscreen.
What is the FIPS code for Montgomery County, Texas?+
The full 5-digit U.S. Census FIPS code for Montgomery County is 48339, made up of Texas state code 48 and the 3-digit county code 339. This is the same FIPS code used by the U.S. Census Bureau TIGER/Line files, the American Community Survey, and most federal datasets that key on county.