: In some cases, people mistakenly combine parts of a full 9-digit code (e.g., 155XX-834X).
: Identify a specific local post office or delivery area within that city or county. Common Reasons for "Invalid" ZIP Codes 155834 zip
The number is not a valid standard 5-digit United States ZIP code . Standard ZIP codes are exactly 5 digits long, though they can be extended to 9 digits (ZIP+4) for more precise delivery. : In some cases, people mistakenly combine parts