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Macoupin County, Illinois
Map of Illinois highlighting Macoupin County
Location in the state of Illinois
Map of the U.S. highlighting Illinois
Illinois's location in the U.S.
Founded 1829
Seat Carlinville
Largest city Carlinville
 - Total
 - Land
 - Water

868 sq mi (2,247 km²)
864 sq mi (2,237 km²)
4 sq mi (10 km²), 0.47%
 - (2000)
 - Density

57/sq mi (22/km²)
Time zone Central: UTC-6/-5

Macoupin County is a county located in the U.S. state of Illinois. As of 2000, the population was 49,019. Its county seat is Carlinville6. It is Part of the St. Louis Metropolitan Area.


According to the U.S. Census Bureau, the county has a total area of 2,247 km² (868 sq mi). 2,237 km² (864 sq mi) of it is land and 10 km² (4 sq mi) of it (0.47%) is water.

Adjacent Counties[]


Macoupin County was formed in 1829 out of Greene and Madison Counties. The name is a Native American word said to mean "white potato". The potato, however, was not cultivated in North America in pre-Columbian times. This could be a reference to Arrowhead, a plant with an edible root that grows in wetlands in Illinois. Another possibility is the American Lotus, which also has a root that was used as a food source by Native Americans. The name probably derives from Macoupin Creek, which flows through the County. In 2005, the Census Bureau included the County in the St. Louis MSA due to increased commuting patterns and employement in St. Louis and the Metro-East.


Historical populations
Census Pop.
1900 42,256
1910 50,685 19.9%
1920 57,274 13.0%
1930 48,703 −15.0%
1940 46,304 −4.9%
1950 44,210 −4.5%
1960 43,524 −1.6%
1970 44,557 2.4%
1980 49,384 10.8%
1990 47,679 −3.5%
2000 49,019 2.8%
IL Counties 1900-1990

As of the census² of 2000, there were 49,019 people, 19,253 households, and 13,631 families residing in the county. The population density was 22/km² (57/sq mi). There were 21,097 housing units at an average density of 9/km² (24/sq mi). The racial makeup of the county was 97.99% White, 0.82% Black or African American, 0.22% Native American, 0.18% Asian, 0.03% Pacific Islander, 0.15% from other races, and 0.61% from two or more races. 0.62% of the population were Hispanic or Latino of any race.

There were 19,253 households out of which 31.40% had children under the age of 18 living with them, 58.10% were married couples living together, 8.90% had a female householder with no husband present, and 29.20% were non-families. 25.60% of all households were made up of individuals and 13.70% had someone living alone who was 65 years of age or older. The average household size was 2.48 and the average family size was 2.97.

In the county the population was spread out with 24.60% under the age of 18, 8.30% from 18 to 24, 26.70% from 25 to 44, 22.90% from 45 to 64, and 17.50% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 94.90 males. For every 100 females age 18 and over, there were 90.90 males.

The median income for a household in the county was $36,190, and the median income for a family was $43,021. Males had a median income of $34,369 versus $22,293 for females. The per capita income for the county was $17,298. About 7.10% of families and 9.40% of the population were below the poverty line, including 12.50% of those under age 18 and 7.90% of those age 65 or over.

Cities and towns[]

Census designated places[]

External links[]

Coordinates: 39°16′N 89°55′W / 39.26, -89.92

This page uses content from the English language Wikipedia. The original content was at Macoupin County, Illinois. The list of authors can be seen in the page history. As with this Familypedia wiki, the content of Wikipedia is available under the Creative Commons License.