Mount Olive, Illinois
Location in Macoupin County, Illinois
Location in Macoupin County, Illinois
Mount Olive is located in the United States
Mount Olive
Mount Olive
Location in the United States
Coordinates: 39°04′22″N 89°43′40″W / 39.07278°N 89.72778°W / 39.07278; -89.72778[1]
CountryUnited States
TownshipMount Olive
 • Total1.156 sq mi (2.99 km2)
 • Land1.153 sq mi (2.99 km2)
 • Water0.003 sq mi (0.008 km2)
Elevation682 ft (208 m)
 • Total2,015
 • Density1,747.61/sq mi (674.49/km2)
Time zoneUTC−6 (CST)
 • Summer (DST)UTC−5 (CDT)
ZIP code
Area code217
FIPS code17-51024
GNIS feature ID2395123[1]

Mount Olive is a city in Macoupin County, Illinois, United States. The population was 2,015 at the 2020 census.[3] The city is part of the Metro East region within the St. Louis metropolitan area.


Soulsby Service Station along former U.S. Route 66

Mount Olive is located in southeastern Macoupin County. Illinois Route 138 has its eastern terminus in the city, leading west 5 miles (8 km) to Benld. Former U.S. Route 66 passed through the north and west sides of the city and later on a wider alignment farther north and west of the city. Both routings are now local roads, as Interstate 55 now passes 1 mile (1.6 km) west of town, with access from Exit 44 (IL 138). Old Route 66 leads 8 miles (13 km) northeast to Litchfield and southwest 6 miles (10 km) to Staunton, and I-55 leads north 50 miles (80 km) to Springfield and southwest 45 miles (72 km) to St. Louis.

According to the U.S. Census Bureau, Mount Olive has a total area of 1.16 square miles (3.00 km2), of which 0.003 square miles (0.01 km2), or 0.26%, are water.[2] The city drains west to tributaries of Cahokia Creek, a west-flowing direct tributary of the Mississippi River, and southeast to Silver Creek, a south-flowing tributary of the Kaskaskia River.


Historical population
U.S. Decennial Census[4]

As of the census[5] of 2000, there were 2,150 people, 906 households, and 609 families residing in the city. The population density was 1,948.2 inhabitants per square mile (752.2/km2). There were 991 housing units at an average density of 898.0 per square mile (346.7/km2). The racial makeup of the city was 96.79% White, 0.83% Native American, 0.64% Asian, 1.28% from other races, and 0.47% from two or more races. Hispanic or Latino of any race were 3% of the population.

There were 906 households, out of which 30.7% had children under the age of 18 living with them, 54.6% were married couples living together, 8.9% had a female householder with no husband present, and 32.7% were non-families. 29.6% of all households were made up of individuals, and 19.3% had someone living alone who was 65 years of age or older. The average household size was 2.37 and the average family size was 2.92.

In the city, the population was spread out, with 23.5% under the age of 18, 7.7% from 18 to 24, 28.8% from 25 to 44, 19.9% from 45 to 64, and 20.1% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 95.6 males. For every 100 females age 18 and over, there were 88.6 males.

The median income for a household in the city was $35,065, and the median income for a family was $41,765. Males had a median income of $30,709 versus $21,125 for females. The per capita income for the city was $17,172. About 6.1% of families and 6.1% of the population were below the poverty line, including 7.0% of those under age 18 and 6.7% of those age 65 or over.

Notable people

Points of interest

In Mount Olive is located the Union Miners Cemetery where miners killed in the Battle of Virden and community and labor organizer Mary Harris "Mother" Jones are buried.

The cemetery sits just south of former U.S. Route 66. Soulsby Service Station is the oldest operating station on the historic route in Illinois. It is most easily reached by taking Exit 44 on Interstate 55 and going east off the exit ramp, then following the signs to the cemetery.


  1. ^ a b c U.S. Geological Survey Geographic Names Information System: Mount Olive, Illinois
  2. ^ a b "2022 U.S. Gazetteer Files: Illinois". United States Census Bureau. Retrieved February 8, 2023.
  3. ^ a b "P1. Race – Mount Olive city, Illinois: 2020 DEC Redistricting Data (PL 94-171)". U.S. Census Bureau. Retrieved February 8, 2023.
  4. ^ "Census of Population and Housing". Retrieved June 4, 2015.
  5. ^ "U.S. Census website". United States Census Bureau. Retrieved January 31, 2008.