Squarespace was founded in 2003 and launched in January 2004 by Anthony Casalena while he studied at the University of Maryland using a $30,000 investment from his father. He created the initial software behind the company after trying and disliking other personal web page platforms. Squarespace was founded to create an all-in-one web publishing solution. On November 17, 2014, Squarespace announced that it acquired Brace.io, a website creation startup powered by cloud tools like Dropbox and Amazon Web Services. The price of the acquisition was not released.
Headquartered in New York City, the company also has offices in Portland, Oregon, and Dublin, Ireland.Of the company's 560–570 employees, 149 work at the Portland office, located in the Spalding Building.
In 2016, Squarespace was ranked #8 on the Forbes Cloud 100 list.