According to the United States Census Bureau, the city has a total area of 0.22 square miles (0.58 km2), all land.

12.5% of all households were made up of individuals, and 3.4% had someone living alone who was 65 years of age or older.

None of the families and 2.7% of the population were living below the poverty line, including no under eighteens and 13.6% of those over 64.

The city of Hays was founded in the 1970s following a movement to incorporate the Country Estates subdivision.

The city is served by the Hays Consolidated Independent School District.