According to the 2021 census gazetteer files, Robinson has a total area of 4.76 square miles (12.33 km2), of which 4.70 square miles (12.17 km2) (or 98.72%) is land and 0.06 square miles (0.16 km2) (or 1.28%) is water.[6]
According to theKöppen Climate Classification system, Robinson has ahumid subtropical climate, abbreviated "Cfa" on climate maps. The hottest temperature recorded in Robinson was 108 °F (42.2 °C) on July 22, 1901, while the coldest temperature recorded was −20 °F (−28.9 °C) on February 9, 1899.[7]
Climate data for Robinson, Illinois, 1991–2020 normals, extremes 1895–present
As of the2020 census[10] there were 7,150 people, 2,611 households, and 1,605 families residing in the city. The population density was 1,502.10 inhabitants per square mile (579.96/km2). There were 3,222 housing units at an average density of 676.89 units per square mile (261.35 units/km2). The racial makeup of the city was 83.83%White, 7.83%African American, 0.36%Native American, 0.62%Asian, 0.01%Pacific Islander, 3.09% fromother races, and 4.25% from two or more races.Hispanic orLatino of any race were 4.80% of the population.
There were 2,611 households, out of which 30.7% had children under the age of 18 living with them, 43.70% were married couples living together, 14.44% had a female householder with no husband present, and 38.53% were non-families. 33.55% of all households were made up of individuals, and 17.92% 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 2.00.
The city's age distribution consisted of 14.8% under the age of 18, 8.3% from 18 to 24, 34.5% from 25 to 44, 25.3% from 45 to 64, and 17.1% who were 65 years of age or older. The median age was 40.0 years. For every 100 females, there were 162.3 males. For every 100 females age 18 and over, there were 169.9 males.
The median income for a household in the city was $45,137, and the median income for a family was $61,625. Males had a median income of $42,642 versus $25,938 for females. Theper capita income for the city was $20,646. About 12.6% of families and 15.1% of the population were below thepoverty line, including 13.1% of those under age 18 and 12.0% of those age 65 or over.