| Official Name: | Martinton Township |
| Settlement Type: | Township |
| Image Map1: | Map of Illinois highlighting Iroquois County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Iroquois County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Iroquois |
| Established Title: | Established |
| Established Date: | September 1857 |
| Area Total Sq Mi: | 54.41 |
| Area Land Sq Mi: | 54.22 |
| Area Water Sq Mi: | 0.19 |
| Area Water Percent: | 0.34 |
| Population As Of: | 2020 |
| Population Total: | 813 |
| Population Density Sq Mi: | auto |
| Elevation M: | 190 |
| Elevation Ft: | 623 |
| Coordinates: | 40.9011°N -87.7383°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 60912, 60931, 60951, 60970 |
| Blank Name: | FIPS code |
| Blank Info: | 17-075-47293 |
| Unit Pref: | Imperial |
Martinton Township is one of twenty-six townships in Iroquois County, Illinois, USA. As of the 2020 census, its population was 813 and it contained 379 housing units.[1] Buchanan Township formed from a portion of Papineau Township, then known as Wygant Township, in September 1857; its name was changed to Martinton Township on an unknown date.
According to the 2021 census gazetteer files, Martinton Township has a total area of 54.41sqmi, of which 54.22sqmi (or 99.66%) is land and 0.19sqmi (or 0.34%) is water.[2]
The township contains these four cemeteries: Greentown, Mount Olivet, Old Burg and Teege.
As of the 2020 census there were 813 people, 374 households, and 261 families residing in the township. The population density was 14.94PD/sqmi. There were 379 housing units at an average density of 6.97/sqmi. The racial makeup of the township was 92.13% White, 1.48% African American, 0.12% Native American, 0.62% Asian, 0.00% Pacific Islander, 0.74% from other races, and 4.92% from two or more races. Hispanic or Latino of any race were 2.95% of the population.
There were 374 households, out of which 28.90% had children under the age of 18 living with them, 52.67% were married couples living together, 5.35% had a female householder with no spouse present, and 30.21% were non-families. 24.90% of all households were made up of individuals, and 4.50% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.70.
The township's age distribution consisted of 22.1% under the age of 18, 5.1% from 18 to 24, 27.4% from 25 to 44, 30% from 45 to 64, and 15.3% who were 65 years of age or older. The median age was 38.1 years. For every 100 females, there were 148.4 males. For every 100 females age 18 and over, there were 129.3 males.
The median income for a household in the township was $73,750, and the median income for a family was $88,438. Males had a median income of $59,750 versus $17,321 for females. The per capita income for the township was $33,651. About 10.3% of families and 16.3% of the population were below the poverty line, including 27.7% of those under age 18 and 12.3% of those age 65 or over.