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Montgomery County, Texas facts for kids

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Montgomery County
The Montgomery County Courthouse in Conroe
The Montgomery County Courthouse in Conroe
Map of Texas highlighting Montgomery County
Location within the U.S. state of Texas
Map of the United States highlighting Texas
Texas's location within the U.S.
Country  United States
State  Texas
Founded 1837
Named for Montgomery, Texas
Seat Conroe
Largest township The Woodlands
 • Total 1,077 sq mi (2,790 km2)
 • Land 1,042 sq mi (2,700 km2)
 • Water 35 sq mi (90 km2)  3.3%
 • Total 620,443
 • Density 576.08/sq mi (222.43/km2)
Time zone UTC−6 (Central)
 • Summer (DST) UTC−5 (CDT)
Congressional district 8th

Montgomery County is a county in the U.S. state of Texas. As of the 2020 U.S. census, the county had a population of 620,443. The county seat is Conroe. The county was created by an act of the Congress of the Republic of Texas on December 14, 1837, and is named for the town of Montgomery. Between 2000 and 2010, its population grew by 55%, the 24th-fastest rate of growth of any county in the United States. Between 2010 and 2020, its population grew by 36%. According to the U.S. Census Bureau, the July 1, 2021, estimated population is 648,886.

Montgomery County is part of the Houston-The Woodlands-Sugar Land, TX Metropolitan Statistical Area.


According to the U.S. Census Bureau, the county has a total area of 1,077 square miles (2,790 km2), of which 1,042 square miles (2,700 km2) is land and 35 square miles (91 km2) (3.3%) is water.

Adjacent counties

National protected area

  • Sam Houston National Forest (partial)


Historical population
Census Pop.
1850 2,384
1860 5,479 129.8%
1870 6,483 18.3%
1880 10,154 56.6%
1890 11,765 15.9%
1900 17,067 45.1%
1910 15,679 −8.1%
1920 17,334 10.6%
1930 14,588 −15.8%
1940 23,055 58.0%
1950 24,504 6.3%
1960 26,839 9.5%
1970 49,479 84.4%
1980 128,487 159.7%
1990 182,201 41.8%
2000 293,768 61.2%
2010 455,746 55.1%
2020 620,443 36.1%
U.S. Decennial Census
1850–2010 2010–2020

2020 census

Montgomery County, Texas - Demographic Profile
(NH = Non-Hispanic)
Race / Ethnicity Pop 2010 Pop 2020 % 2010 % 2020
White alone (NH) 324,611 371,403 71.23% 59.86%
Black or African American alone (NH) 18,537 34,177 4.07% 5.51%
Native American or Alaska Native alone (NH) 1,807 1,884 0.40% 0.30%
Asian alone (NH) 9,347 21,436 2.05% 3.45%
Pacific Islander alone (NH) 241 634 0.05% 0.10%
Some Other Race alone (NH) 635 2,522 0.14% 0.41%
Mixed Race/Multi-Racial (NH) 5,870 24,298 1.29% 3.92%
Hispanic or Latino (any race) 94,698 164,089 20.78% 26.45%
Total 455,746 620,443 100.00% 100.00%

Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race.

2010 Census

As of the 2010 census, there were 455,746 people, 162,530 households, and 121,472 families residing in the county. The population density was 423 people per square mile (163/km2). There were 177,647 housing units at an average density of 165 per square mile (64/km2). The racial makeup of the county was 83.5% White, 4.3% Black or African American, 0.7% Native American, 2.1% Asian, 0.1% Pacific Islander, 7.0% from other races, and 2.3% from two or more races. 20.8% of the population were Hispanic or Latino of any race.

As of the 2010 census, its population was 455,746. A 2019 estimate places the population at 607,391.

There were 162,530 households, out of which 36.20% had children under the age of 18 living with them, 59.50% were married couples living together, 10.60% had a female householder with no husband present, 4.70% had a male householder with no wife present, and 25.30% were non-families. 20.60% of all households were made up of individuals, and 6.50% had someone living alone who was 65 years of age or older. The average household size was 2.78 and the average family size was 3.22.

In the county, 27.60% of the population was under the age of 18, 8.00% from 18 to 24, 27.40% from 25 to 44, 26.60% from 45 to 64, and 10.40% who were 65 years of age or older. The median age was 36.1 years. For every 100 females, there were 98.29 males. For every 100 females age 18 and over, there were 95.94 males.

As of the 2000 census, the median income for a household in the county was $50,864, and the median income for a family was $58,983. Males had a median income of $42,400 versus $28,270 for females. The per capita income for the county was $24,544. About 7.10% of families and 9.40% of the population were below the poverty line, including 10.90% of those under age 18 and 10.10% of those age 65 or over.



Conroe-North Houston Regional Airport, a general aviation airport, is located in Conroe.

The Houston Airport System stated that Montgomery County is within the primary service area of George Bush Intercontinental Airport, an international airport in Houston in Harris County.

Major highways

  • I-45 (TX).svg Interstate 45
  • I-69 (TX).svg US 59.svg Interstate 69/U.S. Highway 59
  • Texas 75.svg State Highway 75
  • Toll Texas 99.svg State Highway 99 - Grand Parkway Toll Road
  • Texas 105.svg State Highway 105
  • Texas 242.svg State Highway 242
  • Toll Texas 249.svgTexas 249.svg State Highway 249 - a.k.a. MCTRA 249 Tollway (from Spring Creek to Pinehurst) and the Aggie Expressway (Pinehurst up to Todd Mission)

Toll roads

Montgomery County has several toll roads within its borders, most of which are operated as "pass-through toll roads" or shadow toll roads.

There are two "true" toll roads within Montgomery County. One toll road consists of a section of mainlanes of State Highway 249 between the Harris County line at Spring Creek to FM 1774 in Pinehurst and is signed as MCTRA 249 Tollway (maintained by the Montgomery County Toll Road Authority). North of Pinehurst, the toll road continues as the TxDOT maintained Aggie Expressway (SH 249 Toll) up north to FM 1488 east of Magnolia; an extension of the tolled expressway north to FM 1774 near Todd Mission is under construction. The other toll road within Montgomery County (also maintained by TxDOT) is Grand Parkway (State Highway 99) between Spring Creek to I-69/US 59 near New Caney with an extension east to Liberty and Chambers Counties currently under construction.




Census-designated places

Unincorporated communities


Public schools

Several school districts operate public schools in the county:

  • Conroe ISD
  • Magnolia ISD
  • Montgomery ISD
  • New Caney ISD
  • Richards ISD (partial)
  • Splendora ISD
  • Tomball ISD (partial)
  • Willis ISD (partial)

Private schools

Pre-K to 12
  • Covenant Christian School
  • Christ Community School
  • Esprit International School
  • The Woodlands Christian Academy
  • The John Cooper School
  • The Woodlands Preparatory School
  • Porter Christian Academy
  • Cunae International School
  • Legacy Preparatory Christian Academy
  • Willis Classical Academy
Pre-K to 8
  • St. Anthony Of Padua Catholic School of the Roman Catholic Archdiocese of Galveston-Houston

The closest Catholic high school is Frassati Catholic High School in north Harris County; the planners of the school intended for it to serve The Woodlands.

Colleges and universities

The county is also home to two campuses of the Lone Star College System (formerly North Harris-Montgomery Community College District): Montgomery and The University Center.

Lone Star College's service area under Texas law includes, in Montgomery County: Conroe, Magnolia, Montgomery, New Caney, Splendora, Tomball, and Willis ISDs. The portion in Richards ISD is zoned to Blinn Junior College District.

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