Texas State Highway 56 runs through the town, leading east 5 miles (8 km) to Honey Grove and west 10 miles (16 km) to Bonham, the county seat.

According to the United States Census Bureau, Windom has a total area of 0.54 square miles (1.4 km2), all land.

About 5.8% of families and 10.1% of the population were below the poverty line, including 9.7% of those under the age of eighteen and 20.0% of those sixty five or over.

Windom is served by the Honey Grove Independent School District.

On July 1, 1987, Windom Independent School District merged into Honey Grove ISD.