Madison County, which spans I-70 and I-71 as they converge on Columbus, was recently cited by the Ohio State Highway Patrol as leading the state for the most number of speeding tickets in excess of 20-mph over the posted limit. Despite a population of around 42,000 in 2006, over 7,700 such tickets were issued in three years. Approximately 3 of Madison County's 18 fatal crashes in 2006 and 2007 occurred on interstates.
2007 41,499 (Census estimate) 2000 40,213 1990 37,068 1980 33,004 1970 28,318 1960 26,454 1950 22,300 1940 21,811 1930 20,253 1920 19,662 1910 19,902 1900 20,590 1890 20,057 1880 20,129 1870 15,633 1860 13,015 1850 10,015 1840 9,025 1830 6,190 1820 4,799 1810 1,603
As of the census of 2000, there were 40,213 people, 13,672 households, and 10,035 families residing in the county. The population density was 86 people per square mile (33/km²). There were 14,399 housing units at an average density of 31 per square mile (12/km²). The racial makeup of the county was 91.75% White, 6.24% Black or African American, 0.20% Native American, 0.44% Asian, 0.01% Pacific Islander, 0.35% from other races, and 1.01% from two or more races. 0.73% of the population were Hispanic or Latino of any race.
There were 13,672 households out of which 35.20% had children under the age of 18 living with them, 59.20% were married couples living together, 9.90% had a female householder with no husband present, and 26.60% were non-families. 22.30% of all households were made up of individuals and 9.50% had someone living alone who was 65 years of age or older. The average household size was 2.62 and the average family size was 3.06.
In the county, the population was spread out with 24.70% under the age of 18, 9.10% from 18 to 24, 32.80% from 25 to 44, 22.60% from 45 to 64, and 10.90% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 117.00 males. For every 100 females age 18 and over, there were 121.30 males.
The median income for a household in the county was $44,212, and the median income for a family was $50,520. Males had a median income of $35,251 versus $26,119 for females. The per capita income for the county was $18,721. About 6.20% of families and 7.80% of the population were below the poverty line, including 10.50% of those under age 18 and 8.70% of those age 65 or over.