AddressZen validates, standardizes, and autocompletes addresses via USPS-backed data across 240+ countries, with JS, React, and REST API integrations.
AddressZen provides address lookup, autocomplete, and verification for developers and enterprises. It standardizes address formatting, expands abbreviations, corrects typos, and appends missing postal codes, drawing on authoritative postal data sources such as USPS. The service covers 240+ countries and over 60 languages.
It is built for integration into customer databases, e-commerce checkouts, CRM systems, and web or app forms, offering a JavaScript library, a React component, and a REST API. It also lists compatibility with AI coding assistants and app builders such as Claude Code, GitHub Copilot, Cursor, Windsurf, Lovable, Replit, v0, Base44, and Leap.new.
AddressZen states it has been operating since 2012 and lists enterprise customers including BMW, Forbes, Exxon, GSK, Square, and Xero. Pricing is usage-based, billed per verified address rather than per query, with unlimited autocomplete keystrokes included on every tier.
AddressZen uses authoritative postal data sources, including USPS, to validate and standardize addresses.
Yes, AddressZen offers a free plan that includes 1,400 verified addresses complimentary for one year.
AddressZen is billed per verified address on annual plans, ranging from $49/year for 1,400 addresses up to $1,000/year for 55,000 addresses, with unlimited autocomplete keystrokes on every tier.
AddressZen provides a REST API, a JavaScript library, and a React component for integrating address autocomplete and verification into web and app forms.