Carrollton Township, Boone County, ArkansasCarrollton Township is one of twenty townships in Boone County, Arkansas, USA. As of the 2010 census, it had a total population of 843.GeographyAccording to the United States Census Bureau, Carrollton Township covers an area of ; consisting of of land and of water.Cities, towns, and villagesAlpenaPopulation historyBetween 1920 and 1980, the population of Carrollton Township in Boone County included the total population of the town of Alpena, even though Alpena lies in both Boone County and parts of two townships in Carroll County. Starting in 2000, the US Census began reporting Alpena's population by township across both counties.