Brazos Valley map
Region · 7 counties · ~5,100 sq mi · Pop. about 362,000 (2020) · Central Time
The Brazos Valley is the wedge of country between the Brazos and Navasota rivers and the rolling post-oak land around them, midway between Houston, Austin and Waco. Texas A&M anchors it, and the Texas Declaration of Independence was signed at its southern edge.
Bryan–College Station sits at the center. The Brazos River runs down the western side, I-45 clips the eastern counties, and SH-6 links the two.
Where it starts and ends
The region is defined by two rivers rather than by a landform. The Brazos comes down from Robertson and Burleson counties along the western edge; the Navasota joins it below Washington County. Between them lies Brazos County, a triangle bounded by the Brazos on the west and the Navasota on the east and named for the first of them.
Going out from Bryan–College Station, the Brazos Valley ends where the Post Oak Savannah does. To the east, past Madison and Leon counties along I-45, the pines start and the country becomes the Piney Woods. To the west it grades into the Blackland Prairie and the Central Texas corridor along I-35. To the south, US-290 through Brenham heads for the Gulf Coast. Local usage sometimes stretches "Brazos Valley" up the river as far as Waco or down as far as Richmond; the seven counties below are the ones the regional council, the media market and the highway signs actually use.
The seven counties
| County | Seat | Pop. 2020 | Sq mi | Created |
|---|---|---|---|---|
| Brazos | Bryan | 233,849 | 591 | 1841 |
| Washington | Brenham | 35,805 | 622 | 1836 |
| Grimes | Anderson | 29,268 | 801 | 1846 |
| Burleson | Caldwell | 17,642 | 677 | 1846 |
| Robertson | Franklin | 16,757 | 866 | 1837 |
| Leon | Centerville | 15,719 | 1,080 | 1846 |
| Madison | Madisonville | 13,455 | 472 | 1853 |
Brazos County holds close to two-thirds of the region's people; it was created in 1841 as Navasota County and renamed the following year. Grimes County's seat, Anderson, is a town of a few hundred people.
Cities and towns
- College Station
120,511 people (2020). Texas A&M University, Kyle Field and the George Bush Presidential Library sit on the west side of SH-6.
- Bryan
83,980 people (2020) and the seat of Brazos County. The older of the twin cities, built along the railroad north of campus; downtown Bryan is on Main Street off SH-21.
- Washington County
Brenham, the seat, is 35 miles southeast of College Station on SH-36 and US-290. Blue Bell Creameries and Blinn College are here.
- Grimes County
Navasota sits where SH-6 crosses SH-105; Anderson, the county seat 12 miles west, keeps the 1830s Fanthorp Inn stage stop.
- Madison County
Madisonville stands where SH-21 crosses I-45, roughly halfway between Dallas and Houston.
- Robertson County
Hearne, Calvert and Franklin lie along US-79 and SH-6 on the Brazos bottom; Calvert's Main Street is a preserved 19th-century commercial block.
- Burleson County
Caldwell, the seat, is on SH-21; Somerville sits below the dam on Lake Somerville to the south.
Roads
- SH-6 – the spine of the region, running from Hearne through Bryan–College Station and Navasota toward Houston; four-lane divided for most of that length.
- I-45 – the eastern boundary road, passing Madisonville and Centerville between Dallas and Houston.
- SH-21 (the Old San Antonio Road) – the historic El Camino Real route, running southwest–northeast through Caldwell, Bryan, Madisonville and on to Nacogdoches.
- SH-OSR – a separate surviving segment of the same old road, signed as State Highway OSR along the Brazos–Robertson and Leon–Madison county lines.
- US-290 – Brenham to Austin one way and Houston the other, the busiest road in the southern counties.
- SH-249 (Aggie Expressway) – the tolled route from north Houston up through Grimes County toward Navasota.
- US-79 – Hearne northeast toward Palestine, and southwest toward Rockdale and Round Rock.
Where Texas was declared independent
On March 2, 1836, delegates meeting in an unfinished building at Washington-on-the-Brazos, in Washington County, signed the Texas Declaration of Independence. The site is now a state historic park on the river between Brenham and Navasota, reached by FM-1155 off SH-105. Washington later served briefly as the capital of the Republic of Texas.
Independence, a few miles north of Brenham, was the first campus of Baylor University before it moved to Waco in 1886. The land in between is one of the older settled parts of Texas: Stephen F. Austin's colony took in these counties, which is why the county names — Washington, Burleson, Robertson, Grimes — read like a roll call of the Republic.
Distinctive facts
| Largest institution | Texas A&M University, opened at College Station in 1876 as the Agricultural and Mechanical College of Texas |
| River | The Brazos, about 840 miles long and the longest river lying entirely within Texas |
| Founding site | Washington-on-the-Brazos, March 2, 1836 |
| Largest lake | Lake Somerville, on Yegua Creek between Burleson, Lee and Washington counties |
| Twin cities | Bryan and College Station, adjoining cities sharing one metropolitan area and one airport |
| Oldest road | El Camino Real de los Tejas, surveyed in the Spanish period and still signed as SH-21 and SH-OSR |