The Roman Catholic Holy Trinity Church is the town's only church and only school. The school is a private school called Trinity Catholic School.
The Protivin area has many wildlife areas and opportunities for hunting and fishing. According to the United States Census Bureau, the city has a total area of 0.5 square miles (1.2 km²), all of it land.
Protivin is located on a state highway between U.S. Routes 52 and 63.
There were 154 households out of which 20.8% had children under the age of 18 living with them, 43.5% were married couples living together, 4.5% had a female householder with no husband present, and 48.7% were non-families. 43.5% of all households were made up of individuals and 29.2% had someone living alone who was 65 years of age or older. The average household size was 2.06 and the average family size was 2.86.
In the city the population was spread out with 21.8% under the age of 18, 5.7% from 18 to 24, 23.0% from 25 to 44, 20.5% from 45 to 64, and 29.0% who were 65 years of age or older. The median age was 44 years. For every 100 females there were 108.6 males. For every 100 females age 18 and over, there were 98.4 males.
The median income for a household in the city was $29,779, and the median income for a family was $35,156. Males had a median income of $30,179 versus $18,125 for females. The per capita income for the city was $18,818. About 10.1% of families and 13.2% of the population were below the poverty line, including 15.3% of those under the age of 18 and 20.7% of those ages 65 and older.