AnswerIn what year was the five-digit ZIP code first implemented? Last updated: 2021/11/14 at 12:00 PM By RockedBuzz 0 Min Read Share SHARE In what year was the five-digit ZIP code first implemented?1903 1933 1963 2003 The Answer: The correct answer is 1963. Share This Article Facebook Twitter Pinterest Whatsapp Whatsapp Reddit Telegram Copy Link Previous Article [US] Supersonic quiz – Have a sweet tooth? This quiz is for you. [11-09-2021] Next Article What city is home to the ZIP code 90210?