USPS Postal & ZIP Code Directory • 2026 Updated
United States ZIP Code & USPS Postage Finder
Instant lookup for 41,488+ US ZIP codes, USPS postage rate calculations, and CASS-compliant shipping label formatting.
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41,488+
Active US ZIP Codes
50
States + DC & PR
3,143
US Counties
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USPS Postage Rate Calculator
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USPS Shipping Label Formatter
Generate CASS-standard shipping address labels for USPS, FedEx, and UPS deliveries with standardized 2-letter state codes.
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All 50 US States Directory
Browse ZIP code directories across California, New York, Texas, Florida, and all 50 states with county breakdowns.
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State Postal Directory
Browse US ZIP Codes by State
Explore postal codes across all 50 states, District of Columbia, and Puerto Rico.
AL
Alabama
811 ZIPs
AK
Alaska
273 ZIPs
AZ
Arizona
530 ZIPs
AR
Arkansas
706 ZIPs
CA
California
2,593 ZIPs
CO
Colorado
645 ZIPs
CT
Connecticut
429 ZIPs
DE
Delaware
96 ZIPs
DC
District of Columbia
277 ZIPs
FL
Florida
1,473 ZIPs
GA
Georgia
952 ZIPs
HI
Hawaii
137 ZIPs
ID
Idaho
320 ZIPs
IL
Illinois
1,575 ZIPs
IN
Indiana
968 ZIPs
IA
Iowa
1,055 ZIPs
KS
Kansas
748 ZIPs
KY
Kentucky
946 ZIPs
LA
Louisiana
719 ZIPs
ME
Maine
485 ZIPs
MH
Marshall Islands
2 ZIPs
MD
Maryland
605 ZIPs
MA
Massachusetts
685 ZIPs
MI
Michigan
1,159 ZIPs