Galva, IL has a population of 2,525 and is the 9,786th largest city in the United States. The population density is 883 per sq mi which is 297% higher than the Illinois average and 874% higher than the national average. The median age in Galva is 46 which is approximately 23% higher than the Illinois average of 37. In Galva, 63% of the population over 15 years of age are married, 98% speak English and 0% speak Spanish. 81% of Galva residents were born in Illinois, 17% were born out of state, 0% were born outside of the United States and 2% were foreign born.