Alledonia is a community in Belmont County, Ohio. It is an unincorporated area, and it falls within the Wheeling Metro Area. Its population as of 2011 was 206.
Management, professional occupations, sales and services and production of goods are the major commercial activities here. The community is along State Route 148. The cost of living here is 17.10% lower than the country average.
This place gets about 42 inches of rain annually. The number of days with measurable precipitation is 140. Snowfall is about 17 inches annually.