[3] According to the 2010 census, Tamaroa has a total area of 0.96 square miles (2.49 km2), all land.

[4] As of the census[6] of 2000, there were 740 people, 300 households, and 201 families residing in the village.

There were 336 housing units at an average density of 341.9 per square mile (132.0/km2).

There were 300 households, out of which 29.0% had children under the age of 18 living with them, 50.7% were married couples living together, 10.0% had a female householder with no husband present, and 32.7% were non-families.

27.0% of all households were made up of individuals, and 14.3% had someone living alone who was 65 years of age or older.