Ursa is a village in Adams County, Illinois, United States.

[3] According to the 2021 census gazetteer files, Ursa has a total area of 0.69 square miles (1.79 km2), all land.

[5] As of the 2020 census[7] there were 609 people, 245 households, and 144 families residing in the village.

There were 268 housing units at an average density of 388.41 per square mile (149.97/km2).

33.47% of all households were made up of individuals, and 12.24% had someone living alone who was 65 years of age or older.