In the late 1850s a branch of the "free love" movement was established in Berlin Heights.

Berlin Heights is also located between the cities of Norwalk and Vermilion.

According to the United States Census Bureau, the village has a total area of 1.60 square miles (4.14 km2), all land.

There were 282 housing units at an average density of 176.3 per square mile (68.1/km2).

20.1% of all households were made up of individuals, and 8.9% had someone living alone who was 65 years of age or older.

There were 266 housing units at an average density of 170.2 per square mile (65.7/km2).

19.1% of all households were made up of individuals, and 7.0% had someone living alone who was 65 years of age or older.