North Vernon is a city in Jennings County, Indiana, United States.

North Vernon was originally called Tripton, and under that name was platted in 1854.

[6] The climate in this area is characterized by hot, humid summers and typically cold mid-west winters.

There were 2,948 housing units at an average density of 445.3 per square mile (171.9/km2).

31.1% of all households were made up of individuals, and 12.4% had someone living alone who was 65 years of age or older.

There were 2,892 housing units at an average density of 658.9 per square mile (254.4/km2).

32.0% of all households were made up of individuals, and 13.8% had someone living alone who was 65 years of age or older.