[7] Gentry is located on the west bank of the Middle Fork of the Grand River.
[8] According to the United States Census Bureau, the village has a total area of 0.23 square miles (0.60 km2), all land.
There were 35 housing units at an average density of 152.2 per square mile (58.8/km2).
There were 44 housing units at an average density of 194.2 per square mile (75.0/km2).
32.4% of all households were made up of individuals, and 5.9% had someone living alone who was 65 years of age or older.
There were 25.0% of families and 17.1% of the population living below the poverty line, including 10.4% of under eighteens and none of those over 64.