According to the United States Census Bureau, the town has a total area of 1.5 square miles (3.9 km2), all land.

Shortly after 1 p.m., Jay Wesley Neill entered the First Bank of Chattanooga in Geronimo, and forced the three tellers to the back room, where he had them lie face down on the floor and stabbed them to death.

The three employees (Kay Bruno, 42; Jerri Bowles, 19; Joyce Mullenix, 25) were stabbed a total of 75 times.

Neill and accomplice Robert Grady Johnson were arrested on December 17 at the Holiday Inn in downtown San Francisco.

Upon their extradition back to Comanche County, OK, then-District Attorney Dick Tannery prosecuted both defendants for capital murder and sought death sentences.

In 1985, Neill and Johnson were both convicted by a Comanche County jury in Lawton of the crimes related to the robbery and murders and assessed the death penalty.

Neill was executed by lethal injection at the Oklahoma State Penitentiary in McAlester in November 2002, while Johnson continues to be incarcerated at the same correctional facility.