Guntersville, AL has a population of 8,360 and is the 4,545th largest city in the United States. The population density is 329 per sq mi which is 258% higher than the Alabama average and 263% higher than the national average. The median age in Guntersville is 43 which is approximately 12% higher than the Alabama average of 39. In Guntersville, 61% of the population over 15 years of age are married, 93% speak English and 2% speak Spanish. 66% of Guntersville residents were born in Alabama, 27% were born out of state, 1% were born outside of the United States and 6% were foreign born.