Updated: 02/04/2024 by Computer Hope
Square logo

Founded in May 2009 by Jack Dorsey and Jim McKelvey, Square, Inc. is a financial services, mobile payments company and merchant services aggregator based in San Francisco, California. A square credit card reader is plugged into the audio jack of smartphones and tablets, making them a mobile point of sale device.


On December 10, 2021, the Square company was officially renamed to Block, Inc.

Contact information

Support: Phone number requires sign-in
Fax: None or unknown
TDD/TTY: None or unknown
Website: Square official website
FTP: None or unknown
E-mail: Square support
Address: Square Headquarters
1455 Market Street, Suite 600
San Francisco, CA 94103, USA
Stock: None

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Square news and history

January 31, 2022 - Block acquired Afterpay.

December 10, 2021 - Square announced it would change its company name to Block, Inc.