According to theUS Census Bureau, the county has an area of 315 square miles (820 km2), of which 314 square miles (810 km2) is land and 1.0 square mile (2.6 km2) (0.3%) is water.[4]
In recent years, average temperatures in the county seat of Petersburg have ranged from a low of 17 °F (−8 °C) in January to a high of 87 °F (31 °C) in July, although a record low of −24 °F (−31 °C) was recorded in February 1905 and a record high of 112 °F (44 °C) was recorded in July 1954. Average monthly precipitation ranged from 1.62 inches (41 mm) in January to 4.06 inches (103 mm) in May.[5]
Menard County, Illinois – Racial and ethnic composition Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.
As of the2010 United States census, there were 12,705 people, 5,140 households, and 3,683 families living in the county.[21] The population density was 40.4 inhabitants per square mile (15.6/km2). There were 5,654 housing units at an average density of 18.0 per square mile (6.9/km2).[4] The racial makeup of the county was 97.5% white, 0.6% black or African American, 0.3% American Indian, 0.2% Asian, 0.4% from other races, and 1.1% from two or more races. Those of Hispanic or Latino origin made up 1.0% of the population.[21] In terms of ancestry, 32.5% wereGerman, 20.8% wereAmerican, 15.6% wereIrish, and 14.3% wereEnglish.[22]
Of the 5,140 households, 32.4% had children under the age of 18 living with them, 57.5% were married couples living together, 9.6% had a female householder with no husband present, 28.3% were non-families, and 24.3% of all households were made up of individuals. The average household size was 2.44 and the average family size was 2.87. The median age was 42.6 years.[21]
The median income for a household in the county was $56,230 and the median income for a family was $65,882. Males had a median income of $42,408 versus $36,735 for females. The per capita income for the county was $26,281. About 6.1% of families and 7.7% of the population were below thepoverty line, including 10.4% of those under age 18 and 9.4% of those age 65 or over.[23]
Illinois counties have the option of using or rejecting the township form of providing local services.[24] In Illinois, only 16 of the state's 102 counties have opted out of the township system; Menard County is one of the sixteen.
However, resistance againstWoodrow Wilson’s participatory attitude during World War I allowedCharles Evans Hughes to carry Menard County in 1916 by a mere four votes (Hughes lost the national election). Since then, as German hostility to Wilson hardened, Menard has become a strongly Republican county. The only Democrats who have carried Menard County since 1916 have beenFranklin D. Roosevelt in 1932 and 1936, andLyndon Johnson in 1964. Apart from these three 400-electoral vote Democratic landslides,George H. W. Bush in 1992 is the sole Republican candidate since 1920 to fail to win a majority in Menard County.Jimmy Carter and Illinois-bred Barack Obama are the only Democrats since 1964 to reach forty percent of Menard County’s vote. The last two elections have seen a large swing against the Democrats, common to all of rural downstate Illinois.
United States presidential election results for Menard County, Illinois[25]