Mason City is a village in Custer County, Nebraska, United States.

Mason City was platted in 1886 when the Burlington and Missouri River Railroad was extended to that point.

[4][5] The town was named for Oliver Perry Mason, a former Nebraska Supreme Court judge.

[6] According to the United States Census Bureau, the village has a total area of 0.47 square miles (1.22 km2), all land.

The racial makeup of the village was 94.2% White, 0.6% Native American, 1.2% Asian, and 4.1% from two or more races.

The racial makeup of the village was 94.38% White, 3.37% Native American, and 2.25% from two or more races.