There are now more and more food delivery services. The never-ending competition between DoorDash and Grubhub is on the rise. In terms of who has more customers, GrubHub takes the lead and obviously the clear winner. No matter how good delivery service is, if it is not readily available, it would be difficult to service more customers. GrubHub is a public company that is working in over 1500 cities across the United States and London. GrubHub is also working with over 85,000 local takeout restaurants. DoorDash, on the other hand, is only available in limited cities in the United States and Canada. IF DoorDash is not available in your vicinity, you are more likely to use GrubHub, hence the reason why it has more customers.