Austin became the capital of Texas on January 19, 1839, when the Congress of the Republic of Texas voted to approve a site on the north bank of the Colorado River as the republic’s permanent seat of government.1Texas State Historical Association. January 19, 1839: Waterloo Approved as Capital The settlement there, a cluster of about four families known as Waterloo, was renamed Austin in honor of Stephen F. Austin. President Mirabeau B. Lamar and his cabinet arrived on October 17, 1839, and the city began functioning as the capital.2Texas State Historical Association. Capitals
Where the Capital Was Before 1839
Texas had no fixed capital in its first years of independence. The Convention of 1836 met at Washington-on-the-Brazos, and the seat of government then moved in quick succession through Harrisburg, Galveston Island, Velasco, and Columbia (now West Columbia) under interim and then elected leadership. In December 1836 the government relocated to Houston, which began official operations as capital on April 19, 1837.
Houston was not a comfortable capital. One contemporary account described it as a “muddy collection of tents and log buildings.”3Texas State Library. Sam Houston, Mr. President By the time Mirabeau B. Lamar succeeded Sam Houston as president in late 1838, there was real appetite for a permanent location further west.
The 1839 Vote and the Renaming of Waterloo
In January 1839, Lamar appointed a five-man commission to pick a site and sent them to inspect a spot on the Colorado River he had admired for its “healthy climate and scenic beauty.”4Where Texas Became Texas. Eighth Capital: Austin They recommended it, citing the beauty of the land, abundant resources, and a central position within the republic.
On January 19, 1839, the Texas Congress approved the recommendation over objections from lawmakers who thought the frontier location too exposed. The commission bought 7,735 acres covering Waterloo and the surrounding land, and Congress renamed the settlement after Stephen F. Austin, the Father of Texas.5Texas Almanac. Waterloo For Lamar, choosing this site was also strategic. He described it as “the first step in a grand scheme to extend the republic all the way to the Pacific Ocean.”6Texas State Historical Association. Edwin Waller Appointed to Lay Out the Capital
Building the City and the Government’s Arrival
Lamar put Edwin Waller, a veteran of the Texas Revolution, in charge of actually building the capital. Waller was bonded on April 12, 1839, given $113,000 in Texas scrip, and set to work with roughly 200 laborers under armed guard on what was still frontier.7Texas State Historical Association. Waller, Edwin Leonard He laid out a one-square-mile grid with Congress Avenue running north through a natural canyon toward the hilltop designated for the Capitol.8Austin American-Statesman. The Puzzlement of Austin’s Original City Plan
President Lamar and his cabinet arrived on October 17, 1839. From that date, Austin was the operating seat of government for the Republic of Texas.
The Archive War: Austin’s Status Challenged
Austin’s hold on the capital was tested almost immediately. Sam Houston returned to the presidency in 1841 and had never liked the choice. He called it “the most unfortunate site on earth for a seat of government” because of its exposure to Mexican raids and to conflicts with Comanche and Cherokee nations.9Smithsonian Magazine. The Fascinating Story of the Texas Archives War
In March 1842, about 700 Mexican troops under General Rafael Vásquez captured San Antonio.10Texas State Historical Association. Mexican Invasions of 1842 Houston declared a national emergency, ordered the government to relocate to Houston, and directed that the archives be prepared for transport. Austin residents understood what losing the records would mean. The military papers, land titles, and treaties were the proof of the city’s legitimacy as capital, and residents formed a Committee of Vigilance to keep them in place. A special legislative session in June 1842 refused to authorize the move.
On December 10, 1842, Houston secretly ordered Colonel Thomas I. Smith and Captain Eli Chandler to seize the archives by force, with instructions to avoid bloodshed.11Texas State Historical Association. Archives War On the night of December 30, as soldiers loaded records onto wagons, local innkeeper Angelina Eberly spotted the operation and fired a six-pound howitzer at the General Land Office to wake the town.12Texas Historical Commission. Angelina Peyton Eberly: Pioneering Spirit An armed posse led by Captain Mark B. Lewis chased the rangers down at Kenney’s Fort on Brushy Creek. The soldiers surrendered the papers, and the archives were hauled back and stored under guard at Eberly’s inn.
The Texas Congress investigated and formally reprimanded Houston, with a Senate committee concluding he had no legal authority to move the records. The archives stayed in Austin, but the government did not. Houston moved the operating seat of government to Washington-on-the-Brazos in September 1842, and Texas effectively had a split capital for the next few years while Austin declined into something close to a ghost town. The two were reunited in Austin on July 4, 1845.
How Austin’s Capital Status Became Permanent
Texas was annexed by joint resolution of the U.S. Congress, signed by President James K. Polk, with December 29, 1845, recognized as the official date of statehood.13Texas Standard. Texas Became a State in 1845 but Never Lost Its Republican Spirit The formal handover took place on February 19, 1846, on the Capitol grounds in Austin, where Anson Jones, the last president of the Republic, lowered its flag and declared, “The Republic of Texas is no more.”
Under the Texas Constitution of 1845, Austin was designated the state capital only until 1850, when voters would choose a permanent seat.14Texas State Historical Association. Constitution of 1845 Texans voted to keep the capital in Austin in 1850, and a second statewide vote in 1872 confirmed the choice. The current Texas Constitution, adopted in 1876, settles the matter in plain language. Article III, Section 58 reads: “The Legislature shall hold its sessions at the City of Austin, which is hereby declared to be the seat of government.”15FindLaw. Texas Constitution Art. 3, § 58 – Seat of Government
So the short answer is 1839, when the Republic of Texas chose and renamed the site. The fuller answer runs through 1845 statehood, two popular votes, and the 1876 constitution before Austin’s status as capital was fully, legally settled.