During World War II, Cape May Canal was built to connect the Delaware Bay and Cape May Harbor, completed in March 1943. The completion of the Garden State Parkway in 1955 brought hundreds of thousands of tourists, as well as a larger year-round population. Since the 1970s, the mainland has become more developed, due to the high cost of building on the barrier islands. Commercial development concentrated along U.S. Route 9 in Rio Grande, Cape May Court House, and Marmora. Concurrent with the 1980 Presidential election, Cape May County residents voted in favor to create a new state of South Jersey along with five other counties in a nonbinding referendum.
During World War II, Cape May Canal was built to connect the Delaware Bay and Cape May Harbor, completed in March 1943. The completion of the Garden State Parkway in 1955 brought hundreds of thousands of tourists, as well as a larger year-round population. Since the 1970s, the mainland has become more developed, due to the high cost of building on the barrier islands. Commercial development concentrated along U.S. Route 9 in Rio Grande, Cape May Court House, and Marmora. Concurrent with the 1980 Presidential election, Cape May County residents voted in favor to create a new state of South Jersey along with five other counties in a nonbinding referendum.