The term CITY TEXAS can be broken down into six cities in the state of Texas: Rio (3 letters), Waco (4 letters), DALLAS (6 letters), Paso (4 letters), Amarillo (8 letters), and Odessa (6 letters). Rio is a city located in southeastern Texas, near the Gulf of Mexico. Waco is a city located in central Texas, along the Brazos River. DALLAS is a major metropolitan city located in northern Texas. Paso is a city located in western Texas, near the border with Mexico. Amarillo is a city located in the Texas Panhandle region. Odessa is a city located in western Texas, near the border with New Mexico.