WONDER #2340: When were ZIP Codes Invented?

Question 1 of 3

What evidence shows that ZIP codes were widely used soon after their invention?

  1. “Today, the USPS requires ZIP codes on all mail.”
  2. “By 1969, 83% of Americans used ZIP codes.”
  3. “They thought the ZIP code was dehumanizing, turning people into numbers.”
  4. “In 2018, USPS shipped over 146 billion pieces of mail.”

Question 2 of 3

What event caused USPS to lose many of its experience mail carriers?

  1. The American Revolution
  2. World War II
  3. The Cold War
  4. The Vietnam War

Question 3 of 3

According to this Wonder, the original ZIP code was created by...

  1. Robert Moon
  2. Mary Fields
  3. Susanna Brunner
  4. Theodore Roosevelt

Check your answers online at https://www.wonderopolis.org/wonder/when-were-zip-codes-invented.