Alba is a city in Jasper County, Missouri, United States. The population was 555 at the 2010 census.
Alba was platted in 1882. An early postmaster gave the community his last name. A post office called Alba has been in operation since 1860.
Alba is located at 37°14′10″N 94°25′2″W (37.236228, -94.417228). According to the United States Census Bureau, the city has a total area of 0.33 square miles (0.85 km2), all land.
Alba is part of the Joplin, Missouri Metropolitan Statistical Area.
As of the census of 2010, there were 555 people, 227 households, and 167 families living in the city. The population density was 1,681.8 inhabitants per square mile (649.3/km2). There were 251 housing units at an average density of 760.6 per square mile (293.7/km2). The racial makeup of the city was 94.4% White, 0.7% African American, 1.8% Native American, and 3.1% from two or more races.