Chart: On-demand economy workers

These are among the largest on-demand companies focused on unskilled labor, in which payment goes through the platform. A more liberally defined "gig" economy chart would be even larger.

The big picture: Almost all of these companies were created within the past decade.

Chart data: Lyft, Uber and Handy sourced from securities filings. TaskRabbit is for "background-checked" contractors, although not all are necessarily on the network currently. DoorDash, Instacart and Postmates data provided by companies to Axios. Axios also asked Caviar, which said "tens of thousands" and Wag, which declined to provide data.

Go deeper:

• The new gig: America's hidden economy
• On-demand economy workers
• The gig economy is distorting U.S. economic data