Soledad de Graciano Sánchez is a city located in the west-central part of the Mexican state of San Luis Potosí. Formerly known as Soledad Diez Gutiérrez, it serves as the municipal seat for the municipality of the same name and is situated adjacent to the east side of the state's capital city, San Luis Potosí.
According to 2020 Census data, the city has a population of 310,192, while the surrounding municipality has a population of 332,072. The municipality covers a total area of 305.7 square kilometres (118.0 sq mi).