In 1947, after World War II, he immigrated to Canada with his parents and siblings. They settled in the Abbotsford area and established themselves in farming. In 1950, de Jong met his wife, Ann. They were married in 1954 and started their lives together on a dairy farm in Deroche where de Jong successfully built his farming business. In the spring of 1962 they moved to Matsqui and continued dairy farming. They had five children.