Grand Tower is located in southwestern Jackson County and is bordered to the west by the Mississippi River, which forms the Missouri–Illinois boundary. The northern edge of the city borders Shawnee National Forest.
Illinois Route 3 runs through an eastern extension of the city limits, leading north (upriver) 32 miles (51 km) to Chester, where the Chester Bridge crosses the Mississippi, and south 25 miles (40 km) to Illinois Route 146, which crosses the Mississippi to Cape Girardeau, Missouri. There are no other road bridges over the Mississippi closer to Grand Tower.
According to the 2021 census gazetteer files, Grand Tower has a total area of 1.25 square miles (3.24 km2), of which 1.25 square miles (3.24 km2) (or 99.76%) is land and 0.00 square miles (0.00 km2) (or 0.24%) is water.[10]
The Grand Tower Energy Center is a 478 megawatt combined cycle gas-fired facility which produces power for the region. It is owned by Ameren Energy Generating Company, or Genco.[12]
Grand Tower Energy Center
Community
Devil's Backbone Park sign
Shawnee Elementary School, North - Once a public school, now (since 2015) a private residence.
A local post office with zip code 62942 provides mail service.[13] Four churches, the First United Presbyterian Church, the Grand Tower United Methodist Church, First Baptist Church, and Light House Christian Assembly Church offer religious services.[14] A work of levees protects the community from flooding when the Mississippi River water levels rise.[15] The Devil's Backbone Park, named after a limestone ridge which created a natural bottleneck in the Mississippi River, provided easy opportunity for river pirates to attack keelboats and barges. This park provides RV camping, playgrounds, picnic facilities, and a shower house.[16]
As of the 2020 census[3] there were 479 people, 220 households, and 135 families residing in the city. The population density was 382.89 inhabitants per square mile (147.83/km2). There were 263 housing units at an average density of 210.23 per square mile (81.17/km2). The racial makeup of the city was 94.57% White, 0.21% African American, 0.00% Native American, 0.00% Asian, 0.00% Pacific Islander, 0.63% from other races, and 4.59% from two or more races. Hispanic or Latino of any race were 1.46% of the population.
There were 220 households, out of which 27.3% had children under the age of 18 living with them, 42.27% were married couples living together, 10.00% had a female householder with no husband present, and 38.64% were non-families. 21.82% of all households were made up of individuals, and 9.09% had someone living alone who was 65 years of age or older. The average household size was 3.21 and the average family size was 2.68.
The city's age distribution consisted of 22.9% under the age of 18, 13.9% from 18 to 24, 25.7% from 25 to 44, 24.8% from 45 to 64, and 12.7% who were 65 years of age or older. The median age was 36.3 years. For every 100 females, there were 115.8 males. For every 100 females age 18 and over, there were 112.1 males.
The median income for a household in the city was $48,500, and the median income for a family was $56,250. Males had a median income of $40,781 versus $21,136 for females. The per capita income for the city was $20,423. About 5.2% of families and 13.0% of the population were below the poverty line, including 17.4% of those under age 18 and 21.3% of those age 65 or over.
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