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Address Verification

Address Verification API

PostGrid's Address Verification API enables organizations to validate, standardize, enrich, and maintain accurate address data across more than 245 countries and territories. Built for high-volume enterprise and government applications, the solution improves deliverability, reduces returned items, and ensures address quality before communications are sent through any channel.

Verify addresses individually or in bulk using structured or freeform inputs while automatically correcting formatting, identifying missing information, and enriching records with postal, geographic, and delivery intelligence.

Enterprise Address Verification Capabilities

  • Real-time and batch verification for individual lookups or bulk processing of up to 250,000 addresses per request through scalable REST APIs.
  • Global address validation across 245+ countries and territories with support for country-specific postal standards and international formatting.
  • CASS™, SERP, and NCOA® processing to standardize addresses, validate against official postal databases, and identify customer moves before mail is sent.
  • Address autocomplete to improve data entry accuracy by providing real-time address suggestions and reducing user input errors.
  • Intelligent address correction that returns validated alternatives and suggested matches when submitted addresses cannot be verified.
  • Advanced parsing and normalization to convert unstructured or freeform addresses into standardized address components suitable for enterprise systems.
  • Rich location intelligence including geocoding (latitude/longitude), Delivery Point Validation (DPV®), Residential Delivery Indicator (RDI™), carrier route information, county, census tract, and additional postal metadata.
  • Flexible integration options through REST APIs, webhooks, and SDKs for CRM, ERP, billing, customer onboarding, eCommerce, and government applications.
  • Transparent pricing with address verification, geocoding, metadata enrichment, and postal intelligence included in every lookup without separate charges for individual features.

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