ZIP Code Lookup
Find the city, state, county, and timezone for any US ZIP code instantly.
About ZIP Codes
What does ZIP stand for?
ZIP stands for Zone Improvement Plan. The system was introduced by the US Postal Service in 1963 to make mail sorting and delivery more efficient.
What are ZIP+4 codes?
The ZIP+4 code adds four digits after a hyphen to identify a specific block, building, or post office box. The basic 5-digit ZIP code is sufficient for most purposes.