Washington, GA has a population of 3,994 and is the 7,459th largest city in the United States. The population density is 519 per sq mi which is 211% higher than the Georgia average and 473% higher than the national average. The median age in Washington is 45 which is approximately 25% higher than the Georgia average of 36. In Washington, 48% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 87% of Washington residents were born in Georgia, 12% were born out of state, 0% were born outside of the United States and 1% were foreign born.