There are 31 unoccupied units. The racial makeup of the village was 96% White, 2.5% Black, and 1.5% Hispanic or Latino. There were 211 households out of which 30.9% had children under the age of 18 living with them, 52.6% were married couples living together, 30.33% were a single-person households, and 23.5% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 3.08. In the village, the population was spread out with 20.5% under the age of 15, 11.24% from 15 to 24, 23.24% from 25 to 44, 28.57% from 45 to 64, and 16.57% who were 65 years of age or older. The median age was 39.3 years. For every 100 females, there were 91.6 males. There were 435 persons age 15 or older. The median income for a household in the village was $32,734, and the median income for a family was $34,886. Males had a median income of $35,313 versus $21,071 for females. The per capita income for the village was $16,944. About 8.39% of families and 15.29% of the population were below the poverty line, including 12.3% of those under age 18 and 26.2% of those age 65 or over. Agriculture remains the primary economic activity in the vicinity of Dahlgren. Other business activity includes retail sales and manufacturing, including the fabrication of custom cabinetry and countertops. Dahlgren is located on Illinois Route 142 (formerly U.S. Route 460). The nearest access to the interstate highway system (I-64) is to the northwest. The Evansville Western Railway (EVWR) (formerly CSX Transportation) provides freight rail service to Dahlgren. CSX divested of rail line (from Howell Yard in Evansville, Indiana, to Okawville, Illinois) to the Paducah and Louisville Railway (PAL), an operating entity of Four Rivers Transportation, Inc. This was a transaction whereby CSX sold all track, ties and track equipment to PAL and provided a 20-year lease on the right-of-way. Upon completion of the sale on 31 December 2005, PAL transferred all interests to the new Class III operating entity/subsidiary, EVWR, which began operating on 1 January 2006.