Walthourville, GA has a population of 4,091 and is the 7,347th largest city in the United States. The population density is 1,073 per sq mi which is 543% higher than the Georgia average and 1084% higher than the national average. The median age in Walthourville is 30 which is approximately 17% lower than the Georgia average of 36. In Walthourville, 54% of the population over 15 years of age are married, 87% speak English and 9% speak Spanish. 51% of Walthourville residents were born in Georgia, 36% were born out of state, 5% were born outside of the United States and 8% were foreign born.