He married Margaret Stagg Mount on April 3, 1855.

They had three children; Sophronia, Arthur and Marian.

After serving one term as mayor, the Democrats did not re-nominate him but instead went with Isaac William Taussig.

[1] Hopper died in his home in East Orange, New Jersey on October 6, 1905.

This article about a mayor in New Jersey is a stub.