Brunswick, GA has a population of 15,997 and is the 2,673rd largest city in the United States. The population density is 938 per sq mi which is 462% higher than the Georgia average and 935% higher than the national average. The median age in Brunswick is 36 which is approximately 1% higher than the Georgia average of 36. In Brunswick, 42% of the population over 15 years of age are married, 89% speak English and 10% speak Spanish. 67% of Brunswick residents were born in Georgia, 26% were born out of state, 0% were born outside of the United States and 7% were foreign born.