According to the United States Census Bureau, the city has a total area of 0.9 sq mi (2.3 km2), all land.

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

[5] The name Lometa originates from an English transliteration of the Spanish word Lomita for "Little hill".

Lometa has one traffic light, a recent improvement as of 2003 from the original four-way stop, in the middle of town.

On the edge of town is a municipal park with camping sites and a rodeo arena and grounds.

As of the 2020 United States census, there were 753 people, 154 households, and 100 families residing in the city.

Until July 1968, Lometa was a night flag stop on the Santa Fe passenger train the California Special that ran from Clovis, New Mexico to Houston.