Argos is a town in Green and Walnut townships, Marshall County, Indiana, United States. The population was 1,691 at the 2010 census.
Argos is located at 41°14′16″N 86°14′46″W (41.237732, -86.245976).
According to the 2010 census, Argos has a total area of 1.17 square miles (3.03 km2), of which 1.16 square miles (3.00 km2) (or 99.15%) is land and 0.01 square miles (0.03 km2) (or 0.85%) is water.
As of the 2010 census, there were 1,691 people, 642 households, and 443 families residing in the town. The population density was 1,457.8 inhabitants per square mile (562.9/km2). There were 724 housing units at an average density of 624.1 per square mile (241.0/km2). The racial makeup of the town was 94.9% White, 0.3% African American, 0.5% Native American, 0.2% Asian, 2.0% from other races, and 2.1% from two or more races. Hispanic or Latino of any race were 4.6% of the population.
There were 642 households of which 37.1% had children under the age of 18 living with them, 46.4% were married couples living together, 17.3% had a female householder with no husband present, 5.3% had a male householder with no wife present, and 31.0% were non-families. 25.2% of all households were made up of individuals and 10.4% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 3.08.