Austin County is a rural, agricultural dominated county in the U.S. state of Texas. As of the 2020 census, the population was 30,167. Its seat is Bellville. The county and region was settled primarily by German emigrants in the 1800s.

Austin County is included in the Houston–The Woodlands–Sugar Land Metropolitan Statistical Area.

Austin County does not contain the city of Austin, the state capital of Texas, which lies in Travis County, about 110 miles to the northwest.

In 1836, the Texas Legislature established Austin County, naming it for Stephen F. Austin, who facilitated Texas' Anglo-American colonization.

According to the U.S. Census Bureau, the county has a total area of 656 square miles (1,700 km), of which 647 square miles (1,680 km) is land and 9.9 square miles (26 km) (1.5%) is covered by water.

• Washington County (north)
• Waller County (east)
• Fort Bend County (southeast)
• Wharton County (south)
• Colorado County (southwest)
• Fayette County (west)

• Bellville (county seat)
• Brazos Country
• Sealy
• South Frydek
• Wallis

• Industry
• San Felipe

• Rexville

Historical population

Census	Pop.	Note	%±
1850	3,841		—
1860	10,139		164.0%
1870	15,087		48.8%
1880	14,429		−4.4%
1890	17,859		23.8%
1900	20,676		15.8%
1910	17,699		−14.4%
1920	18,874		6.6%
1930	18,860		−0.1%
1940	17,384		−7.8%
1950	14,663		−15.7%
1960	13,777		−6.0%
1970	13,831		0.4%
1980	17,726		28.2%
1990	19,832		11.9%
2000	23,590		18.9%
2010	28,417		20.5%
2020	30,167		6.2%
2023 (est.)	31,677		5.0%
U.S. Decennial Census 1850–2010 2010 2020

Austin County, Texas – Racial and ethnic composition
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 may be of any race.

Race / Ethnicity (NH = Non-Hispanic)	Pop 2000	Pop 2010	Pop 2020	% 2000	% 2010	% 2020
White alone (NH)	16,964	18,657	18,480	71.91%	65.65%	61.26%
Black or African American alone (NH)	2,475	2,622	2,352	10.49%	9.23%	7.80%
Native American or Alaska Native alone (NH)	47	79	78	0.20%	0.28%	0.26%
Asian alone (NH)	68	110	201	0.29%	0.39%	0.67%
Pacific Islander alone (NH)	1	1	8	0.00%	0.00%	0.03%
Other race alone (NH)	34	36	107	0.14%	0.13%	0.35%
Mixed race or Multiracial (NH)	196	271	889	0.83%	0.95%	2.95%
Hispanic or Latino (any race)	3,805	6,641	8,052	16.13%	23.37%	26.69%
Total	23,590	28,417	30,167	100.00%	100.00%	100.00%

As of the census of 2000, 23,590 people, 8,747 households, and 6,481 families resided in the county. The population density was 36 people per square mile (14 people/km). The 10,205 housing units averaged 16 units per square mile (6.2/km). The racial makeup of the county was 80.22% White, 10.64% African American, 0.28% Native American, 0.29% Asian, 6.99% from other races, and 1.58% from two or more races. About 16.13% of the population was Hispanic or Latino of any race, and 26.9% were of German, 8.0% Czech, 6.4% English, and 5.0% Irish ancestry according to Census 2000.

Of the 8,747 households, 34.70% had children under the age of 18 living with them, 60.60% were married couples living together, 9.60% had a female householder with no husband present, and 25.90% were not families; 22.80% of all households were made up of individuals, and 11.50% had someone living alone who was 65 years of age or older. The average household size was 2.67 and the average family size was 3.14.

In the county, the population was distributed as 27.00% under the age of 18, 8.10% from 18 to 24, 26.40% from 25 to 44, 23.70% from 45 to 64, and 14.80% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 96.50 males. For every 100 females age 18 and over, there were 92.90 males.

The median income for a household in the county was $38,615, and for a family was $46,342. Males had a median income of $32,455 versus $22,142 for females. The per capita income for the county was $18,140. About 8.80% of families and 12.10% of the population were below the poverty line, including 13.70% of those under age 18 and 14.40% of those age 65 or over.

United States presidential election results for Austin County, Texas

Year	Republican		Democratic		Third party(ies)
	No.	%	No.	%	No.	%
2020	11,447	78.48%	2,951	20.23%	188	1.29%
2016	9,637	78.52%	2,320	18.90%	317	2.58%
2012	9,265	79.53%	2,252	19.33%	132	1.13%
2008	8,786	74.96%	2,821	24.07%	114	0.97%
2004	8,072	75.43%	2,582	24.13%	48	0.45%
2000	6,661	72.19%	2,407	26.09%	159	1.72%
1996	4,669	58.36%	2,719	33.98%	613	7.66%
1992	4,015	50.89%	2,278	28.87%	1,597	20.24%
1988	4,524	63.18%	2,593	36.22%	43	0.60%
1984	4,872	71.29%	1,941	28.40%	21	0.31%
1980	3,734	64.91%	1,893	32.90%	126	2.19%
1976	2,686	53.37%	2,313	45.96%	34	0.68%
1972	3,084	74.24%	1,043	25.11%	27	0.65%
1968	1,971	45.27%	1,299	29.83%	1,084	24.90%
1964	1,545	39.46%	2,365	60.41%	5	0.13%
1960	1,978	52.92%	1,725	46.15%	35	0.94%
1956	2,501	67.12%	1,215	32.61%	10	0.27%
1952	2,964	67.17%	1,445	32.74%	4	0.09%
1948	1,260	43.98%	1,252	43.70%	353	12.32%
1944	619	19.44%	1,316	41.33%	1,249	39.23%
1940	1,400	49.88%	1,404	50.02%	3	0.11%
1936	290	15.03%	1,635	84.76%	4	0.21%
1932	142	4.81%	2,806	94.96%	7	0.24%
1928	466	17.94%	2,129	81.98%	2	0.08%
1924	457	12.60%	2,601	71.71%	569	15.69%
1920	568	19.65%	538	18.62%	1,784	61.73%
1916	673	40.96%	960	58.43%	10	0.61%
1912	244	16.43%	1,161	78.18%	80	5.39%

Austin County was one of the earliest counties in Texas to turn Republican. After 1944, the only time a Democrat has carried this county is in 1964. Every Republican presidential candidate since 2000 has carried more than 70% of the county vote.

Austin County is part of Texas's 10th congressional district, which as of 2019 is represented in the United States House of Representatives by Michael McCaul.

District 18: Lois Kolkhorst (R) – first elected in 2014

District 13: Ben Leman (R) – first elected in 2018

County Judge: Tim Lapham (R)

Tax Assessor-Collector: Marcus A. Peña (R) – first elected in 2012

The following school districts serve Austin County:

• Bellville Independent School District
• Brazos Independent School District (partial) (Formerly Wallis-Orchard ISD)
• Brenham Independent School District (partial)
• Columbus Independent School District (partial)
• Sealy Independent School District
• Burton Independent School District

(partial)

Blinn Junior College District is the designated community college for most of the county. Areas in Brazos ISD are in Wharton County Junior College District.

• Interstate 10
• U.S. Highway 90
• State Highway 36
• State Highway 159

The TTC-69 component (recommended preferred) of the once-planned Trans-Texas Corridor went through Austin County.

• Adelsverein
• List of museums in the Texas Gulf Coast
• National Register of Historic Places listings in Austin County, Texas
• Recorded Texas Historic Landmarks in Austin County

• Austin County website
• Austin County, Texas from the Handbook of Texas Online
• Austin County from the Texas Almanac
• Austin County from the TXGenWeb Project
• Historic Austin County materials, hosted by the Portal to Texas History.

29°53′N 96°17′W / 29.88°N 96.28°W / 29.88; -96.28