who were 65 years of age or older. The median age was 34.5 years. For every 100 females, there were 477.3 males. For every 100 females age 18 and over, there were 693.3 males. The median income for a household in the village was $70,925, and the median income for a family was $76,979. Males had a median income of $59,167 versus $23,750 for females. The per capita income for the village was $11,121. About 8.9% of families and 13.2% of the population were below the poverty line, including 14.0% of those under age 18 and 19.0% of those age 65 or over. The community is also currently the home to a medium-security prison for the State of Illinois. The community is served by the Sheridan Community Fire Department and Sheridan Police Department. The school district that serves the area is CUSD #2, which serves the Communities of Serena, Sheridan, Harding, Norway, and Baker; Schools are only in Sheridan, Serena, and Harding, however, with the High School in Serena. The mailing area of the community (the area with a Sheridan address) extends toward the communities of Newark, Millington, Norway, Serena, Somonauk, and Sandwich. Regarding to what reference is being consulted, the community of Norway and its environs are actually referred to as being Sheridan, or the nearby community of Serena. Flooding In 1996, a flood occurred after a heavy rain storm drenched the valley, from Aurora down to Dayton, resulting in the low-lying area of Sheridan to flood, and most notably, Sheridan's "Old Mill Inn" became a popular spot for people to canoe from the bridge which came from town, to the Old Mill during the flood. In February 1998, the river flooded again after a rain storm failed to drain into the frozen ground. In 2008, the remnants of Hurricane Ike flooded the valley yet again. During the April 17–18, 2013 rain event, which flooded many bodies of water in the Chicago metropolitan area, the river and Somonauk Creek flooded, with much of the water level considerably diminished after it crested later that weekend. The river valley both north and west of Sheridan is somewhat confined by sandstone bluffs on either side, which forces the river to rise, resulting in higher river levels. The village itself is largely untouched, as a half-mile gap between the main area of town and the valley, coupled with two abandoned gravel quarry pits