Somerset, WI has a population of 2,686 and is the 9,395th largest city in the United States. The population density is 935 per sq mi which is 969% higher than the Wisconsin average and 931% higher than the national average. The median age in Somerset is 29 which is approximately 25% lower than the Wisconsin average of 39. In Somerset, 51% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 32% of Somerset residents were born in Wisconsin, 65% were born out of state, 1% were born outside of the United States and 1% were foreign born.