Geography of Montgomery County
With roughly 781,194 residents, Montgomery County is among the most heavily populated places in Texas — a metropolitan county where city limits, suburbs and highways now cover much of its 1,044 square miles.
It lies in the East Texas region at about 30.30° N, 95.50° W and is 66th in size among Texas's 254 counties. Montgomery County shares boundaries with 6 other Texas counties, and the closest major cities are Houston (about 38 miles away in a straight line) and College Station (about 54 miles).
East Texas is the state's forested corner — the Piney Woods, red-clay hills, lakes and river bottoms that have more in common with the Deep South than with the open West. Timber, poultry, oil and gas, and growing retirement and lake communities shape its economy.
For a broader view of how Montgomery County fits within the state, download our free Texas map with counties and cities PDF — a printable, high-resolution reference showing all 254 Texas counties labeled with their county seats.
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
If you need an official record from Montgomery County — a deed, a birth certificate, a court filing — Conroe is where it is kept. Like every Texas county seat, it hosts the courthouse and the main offices of county government. In a county this large, many services are also offered at satellite offices across the county.
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. Figures are sourced from the U.S. Census Bureau; answers are written and reviewed by the Texas County Map team.
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?+
Use the "Download PDF" button below the Montgomery County map on this page to save a letter-size PDF of the county boundary, neighboring counties and incorporated places, drawn from U.S. Census Bureau 2023 boundary files. The "Official TxDOT road map" button downloads the Texas Department of Transportation county road mapbook for Montgomery County. Both files are stored on this site and download directly. Our free Texas map with counties and cities PDF shows all 254 counties on one sheet.
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.