Question: When did the us start using zip codes?
qaPairs: question: When did the USPS start using zip codes?
answer: 1963
question: When did the USPS start using the extended zip+4 code?
answer: 1983
qaPairs: question: When did the US start utilizing ZIP codes?
answer: 1963
July 1, 1963
question: When did the US start using ZIP+4 codes?
answer: 1983
qaPairs: question: When did the US begin using zip codes?
answer: 1963
July 1, 1963
question: When did the US begin using extended zip codes?
answer: 1983