The economy of Texas is the second-biggest in the U.S (after California). It has a GDP of $1.803 trillion (2018). Texas is home to 6 of the top 50 businesses on the Fortune 500 list (3rd most after New York and California).
If Texas were a sovereign state, it would be the 10th largest economy in the world GDP.
The map below shows nations with higher GDP and HDI per capita than Texas.