Brinkhaven is a village in Union Township, Knox County, Ohio, United States.

There were 65 housing units at an average density of 342.1 per square mile (132.1/km2).

22.2% of all households were made up of individuals, and 9.3% had someone living alone who was 65 years of age or older.

There were 55 housing units at an average density of 288.3 per square mile (111.3/km2).

27.5% of all households were made up of individuals, and 11.8% had someone living alone who was 65 years of age or older.

There were 5.6% of families and 17.7% of the population living below the poverty line, including 25.6% of under eighteens and none of those over 64.