| Official Name: | Meridian Township |
| Settlement Type: | Township |
| Image Map1: | Map of Illinois highlighting Clinton County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Clinton County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Clinton |
| Established Title: | Established |
| Established Date: | November 4, 1873 |
| Area Total Sq Mi: | 36.89 |
| Area Land Sq Mi: | 36.82 |
| Area Water Sq Mi: | 0.07 |
| Area Water Percent: | 0.19 |
| Population As Of: | 2020 |
| Population Total: | 471 |
| Population Density Sq Mi: | auto |
| Elevation M: | 146 |
| Elevation Ft: | 479 |
| Coordinates: | 38.6333°N -89.2°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 62231, 62283 62801, 62882 |
| Blank Name: | FIPS code |
| Blank Info: | 17-027-48476 |
| Unit Pref: | Imperial |
Meridian Township is one of fifteen townships in Clinton County, Illinois, USA. As of the 2020 census, its population was 471 and it contained 237 housing units.[1]
According to the 2010 census, the township has a total area of, of which (or 99.81%) is land and (or 0.19%) is water.[2]
(This list is based on USGS data and may include former settlements.)
The township contains two cemeteries: Bethlehem Lutheran and Stacey.[3]
As of the 2020 census there were 471 people, 232 households, and 124 families residing in the township. The population density was 12.78PD/sqmi. There were 237 housing units at an average density of 6.43/sqmi. The racial makeup of the township was 93.84% White, 0.21% African American, 0.64% Native American, 0.42% Asian, 0.00% Pacific Islander, 0.00% from other races, and 4.88% from two or more races. Hispanic or Latino of any race were 0.00% of the population.
There were 232 households, out of which 25.90% had children under the age of 18 living with them, 42.24% were married couples living together, 0.00% had a female householder with no spouse present, and 46.55% were non-families. 39.20% of all households were made up of individuals, and 19.80% had someone living alone who was 65 years of age or older. The average household size was 2.24 and the average family size was 3.05.
The township's age distribution consisted of 20.4% under the age of 18, 7.1% from 18 to 24, 25.5% from 25 to 44, 30.3% from 45 to 64, and 16.8% who were 65 years of age or older. The median age was 39.9 years. For every 100 females, there were 118.1 males. For every 100 females age 18 and over, there were 114.0 males.
The median income for a household in the township was $61,389, and the median income for a family was $68,906. Males had a median income of $44,583 versus $31,250 for females. The per capita income for the township was $29,535. About 10.5% of families and 11.8% of the population were below the poverty line, including 14.2% of those under age 18 and 5.7% of those age 65 or over.