Experian plc is a consumer credit reporting agency. Experian collects and aggregates information on over one billion people and businesses including 235 million individual US consumers and more than 25 million US businesses. Based in Dublin, Ireland, the company operates in 37 countries with headquarters in the United Kingdom, the United States, and Brazil. The company employs approximately 17,000 people and reported revenue for 2018 of US $4.6 billion. It is listed on the London Stock Exchange and is a constituent of the FTSE 100 Index. Experian is a partner in the UK government's Verify ID system and USPS Address Validation. It is one of the "Big Three" credit-reporting agencies, alongside TransUnion and Equifax.