Kirkwood is an unincorporated community located within Voorhees Township in Camden County, in the U.S. state of New Jersey. Kirkwood once had a post office assigned United States Postal Service ZIP Code 08043. The ZIP Code has been reassigned to a post office named Voorhees that serves the entire township. Kirkwood is still a valid city name for mailing purposes. Kirkwood developed as a bungalow community of homes near Kirkwood Lake, an impoundment of the Cooper River. Residents of nearby Philadelphia and Camden enjoyed Kirkwood as a summer escape from the cities, and many Kirkwood homes were originally Sears-Roebuck catalogue houses built as vacation homes. Most of the early homes were built in the 1915-1925 period. As of the 2000 United States Census, the population for ZIP Code Tabulation Area 08043 was 28,126.