Rule is a town in Haskell County, Texas, United States.

[6] Rule is in western Haskell County at the intersection of U.S. Route 380 and Texas State Highway 6.

According to the United States Census Bureau, the town of Rule has a total area of 0.7 square miles (1.8 km2), all land.

[5] The climate in this area is characterized by hot, humid summers and generally mild to cool winters.

[7] As of the 2020 United States census, there were 561 people, 347 households, and 173 families residing in the town.