Fort Worth is a city located in the state of Texas, United States. It serves as the county seat of Tarrant County and covers an area of nearly 350 square miles (910 km2), extending into Denton, Johnson, Parker, and Wise counties.
As of 2025, Fort Worth has an estimated population of 1,028,117, ranking it as the 10th-most populous city in the United States. It is the fourth-most populous city in Texas and the second-largest city within the Dallas–Fort Worth metroplex. This metropolitan area is the fourth-most populous in the country, with a total population of 8.5 million residents.