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Montgomery County, Texas

Updated · Data: U.S. Census Bureau

Montgomery County, Texas has its county seat in Conroe and FIPS code 48339. About 654,722 people live here, the 11th most populated of the 254 Texas counties.

County seatConroe
FIPS code48339 (Texas 48 + county 339) · all Texas FIPS codes
Population654,722 (11th of 254)
Land area1,042.2 sq mi (65th largest; + 34.7 sq mi water)
People per sq mi628.2
Time zoneCentral time (America/Chicago)
Median home value$317,500
Median property tax paid$5,237 a year (about 1.65% of the median home value: our calculation, not an official rate)
Official websitewww.mctx.org

What counties border Montgomery County?

Montgomery County shares a border with 6 counties:

What cities and towns are in Montgomery County?

18 places with 1,000+ people have residents here; together they hold about 37% of the county's population. The rest live in smaller communities and rural areas.

PlacePopulationResidents in this county
Houston2,300,4190.3% (also in other counties)
The Woodlands (CDP)116,91686.2% (also in other counties)
Conroe96,976100.0%
Cleveland8,1370.9% (also in other counties)
Willis6,693100.0%
Pinehurst (CDP)4,008100.0%
Shenandoah3,597100.0%
Magnolia3,230100.0%
Oak Ridge North3,019100.0%
Roman Forest2,832100.0%
Panorama Village2,524100.0%
Montgomery2,272100.0%
Splendora2,167100.0%
Deerwood (CDP)1,989100.0%
Woodbranch1,776100.0%
Patton Village1,437100.0%
Porter Heights (CDP)1,063100.0%
Grangerland (CDP)1,046100.0%

CDP = census-designated place: a named community with no city government.

What ZIP codes are in Montgomery County?

26 ZIP code areas with residents touch Montgomery County; the ones marked * cross into another county.

Mailing names in Montgomery County that are not cities

These names appear in addresses here but are not Census places: Kingwood, Porter, New Caney, Hockley.

Check an exact address with the address lookup, look up a ZIP code, or see how to confirm your county with official records.

Sources: Census TIGER/Line 2024 (boundary, area, neighbors); ACS 2019-2023 5-year (population, home value, taxes paid); Wikidata, CC0 (seat, website); timezone-boundary-builder (time zone). Data as of November 1, 2026. Not affiliated with any government agency.

FAQ

Frequently asked questions

What is the county seat of Montgomery County, Texas?
Conroe.
What is the FIPS code for Montgomery County?
48339. The first two digits (48) are Texas; the last three (339) are the county.
What counties border Montgomery County?
Grimes County, Harris County, Liberty County, San Jacinto County, Walker County, Waller County.
How many people live in Montgomery County?
About 654,722 (ACS 2019-2023 5-year estimate), the 11th most of the 254 Texas counties.
What time zone is Montgomery County in?
Central time (America/Chicago).
What is the largest city in Montgomery County?
Houston, with about 2,300,419 people (counting all of it, including any part in another county).

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