Alba, MO has a population of 544 and is the 19,049th largest city in the United States. The population density is 1,655 per sq mi which is 1816% higher than the Missouri average and 1727% higher than the national average. The median age in Alba is 36 which is approximately 7% lower than the Missouri average of 38. In Alba, 71% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 69% of Alba residents were born in Missouri, 28% were born out of state, 2% were born outside of the United States and 0% were foreign born.