[5] According to the United States Census Bureau, the city has a total area of 0.28 square miles (0.73 km2), all land.

[7] As of the census[9] of 2010, there were 402 people, 173 households, and 116 families living in the city.

There were 193 housing units at an average density of 689.3 per square mile (266.1/km2).

30.6% of all households were made up of individuals, and 16.2% had someone living alone who was 65 years of age or older.

There were 190 housing units at an average density of 703.2 per square mile (271.5/km2).

32.4% of all households were made up of individuals, and 24.6% had someone living alone who was 65 years of age or older.

Alma is home to Santa Fe High School.