As of April 2008, the Simpson land use planning area consisted of 3,050 acres (4.77 square miles), including the town limits and the area contained within the extraterritorial jurisdiction. The town limits contain 280 acres (.44 square miles).
There are 189 households out of which 26.5% have children under the age of 18 living with them, 51.3% are married couples living together, 14.8% have a female householder with no husband present, and 30.2% are non-families. 28.0% of all households are made up of individuals and 14.3% have someone living alone who is 65 years of age or older. The average household size is 2.46 and the average family size is 3.01.
The average household size in Simpson is 2.46 persons per household, a little larger than the average household size in Pitt County (2.21 persons per household). Owner-occupied households average 2.40 persons per household, compared to 2.45 persons per household for owner occupants in Pitt County. Renter-occupied households in Simpson (2.81) are substantially larger than Pitt County (1.90).