Address: ZIP code (US) Reguler Expression

Address: ZIP code (US)

\b[0-9]{5}(?:-[0-9]{4})?\b

• Assert position at a word boundary
• Match a single character in the range between "0" and "9"
  • Exactly 5 times
• Match the regular expression below
  • Between zero and one times, as many times as possible, giving back as needed (greedy)
  • Match the character "-" literally
  • Match a single character in the range between "0" and "9"
    • Exactly 4 times
• Assert position at a word boundary

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