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Is there a rate limit on the API?
Address Validation API has a default rate limit of 6000 Queries Per Minute (QPM). See
Usage limits and billing for more information.
Is the Address Validation API CASS Certified™?
The United States Postal Service® (USPS®)1 maintains the
Coding Accuracy Support System (CASS™)
to support and certify address validation providers. The
Address Validation API is a CASS Certified™ service that you can
optionally use as part of the address validation process.
Google Maps Platform is a non-exclusive Licensee of the United States
Postal Service®. The following trademark(s) are owned by the United States
Postal Service® and used with permission: United States Postal Service®,
CASS™, CASS Certified™. ↩
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eThe Address Validation API has a rate limit of 6000 Queries Per Minute (QPM).\u003c/p\u003e\n"],["\u003cp\u003eThe Address Validation API is CASS Certified™, meaning it meets the USPS® standards for address validation.\u003c/p\u003e\n"],["\u003cp\u003eMore information regarding usage limits and address validation can be found in the provided documentation links.\u003c/p\u003e\n"]]],[],null,["Is there a rate limit on the API?\n\nAddress Validation API has a default rate limit of 6000 Queries Per Minute (QPM). See\n[Usage limits and billing](/maps/faq#usage-limits) for more information.\n\nIs the Address Validation API CASS Certified™?\n\nThe United States Postal Service® (USPS®)^[1](#fn1)^ maintains the\n[Coding Accuracy Support System (CASS™)](https://postalpro.usps.com/certifications/cass)\nto support and certify address validation providers. The\nAddress Validation API is a CASS Certified™ service that you can\noptionally use as part of the address validation process.\n\nFor more information, see [Validate an address](/maps/documentation/address-validation/requests-validate-address). \n\n*** ** * ** ***\n\n1. Google Maps Platform is a non-exclusive Licensee of the United States\n Postal Service®. The following trademark(s) are owned by the United States\n Postal Service® and used with permission: United States Postal Service®,\n CASS™, CASS Certified™. [↩](#fnref1)"]]
