| Official Name: | Martin Township |
| Settlement Type: | Township |
| Image Map1: | Map of Illinois highlighting Crawford County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Crawford County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Crawford |
| Established Title: | Established |
| Established Date: | June 21, 1869 |
| Area Total Sq Mi: | 42.62 |
| Area Land Sq Mi: | 42.61 |
| Area Water Sq Mi: | 0.02 |
| Area Water Percent: | 0.04 |
| Population As Of: | 2020 |
| Population Total: | 504 |
| Population Density Sq Mi: | auto |
| Elevation M: | 142 |
| Elevation Ft: | 466 |
| Coordinates: | 38.9108°N -87.865°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 62421, 62427, 62449, 62454, 62466 |
| Blank Name: | FIPS code |
| Blank Info: | 17-033-47202 |
| Unit Pref: | Imperial |
Martin Township is one of ten townships in Crawford County, Illinois, United States. As of the 2020 census, its population was 504 and it contained 233 housing units.[1]
According to the 2021 census gazetteer files, Martin Township has a total area of 42.62sqmi, of which 42.61sqmi (or 99.96%) is land and 0.02sqmi (or 0.04%) is water.[2]
(This list is based on USGS data and may include former settlements.)
The township contains these five cemeteries: Berlin, Hardinville, Jones, Prior Grove and Richart.
As of the 2020 census[3] there were 504 people, 162 households, and 85 families residing in the township. The population density was 11.82PD/sqmi. There were 233 housing units at an average density of 5.47/sqmi. The racial makeup of the township was 94.25% White, 0.00% African American, 0.20% Native American, 0.20% Asian, 0.00% Pacific Islander, 0.20% from other races, and 5.16% from two or more races. Hispanic or Latino of any race were 0.40% of the population.
There were 162 households, out of which 16.70% had children under the age of 18 living with them, 52.47% were married couples living together, none had a female householder with no spouse present, and 47.53% were non-families. 47.50% of all households were made up of individuals, and 15.40% had someone living alone who was 65 years of age or older. The average household size was 1.96 and the average family size was 2.84.
The township's age distribution consisted of 18.6% under the age of 18, none from 18 to 24, 31.5% from 25 to 44, 25.5% from 45 to 64, and 24.5% who were 65 years of age or older. The median age was 46.5 years. For every 100 females, there were 110.6 males. For every 100 females age 18 and over, there were 108.9 males.
The median income for a household in the township was $55,000, and the median income for a family was $66,750. Males had a median income of $67,083 versus $40,729 for females. The per capita income for the township was $28,337. About 14.1% of families and 20.1% of the population were below the poverty line, including 20.3% of those under age 18 and 32.1% of those age 65 or over.