Auburndale, WI has a population of 705 and is the 17,430th largest city in the United States. The population density is 340 per sq mi which is 289% higher than the Wisconsin average and 276% higher than the national average. The median age in Auburndale is 38 which is approximately 3% lower than the Wisconsin average of 39. In Auburndale, 73% of the population over 15 years of age are married, 89% speak English and 10% speak Spanish. 82% of Auburndale residents were born in Wisconsin, 8% were born out of state, 1% were born outside of the United States and 9% were foreign born.