Total market revenue for the month amounted to $359.3m (£258.9m/€298.9m), up from $163.5m in March of last year.
The 2020 figures were heavily impacted by land-based casino closures and a lack of sports betting options due to Covid-19 restrictions.
The sports betting segment saw significant growth, with revenue jumping 360.9% year-on-year to $60.8m.
Players wagered a total of $859.6m on sports during the month, split between $780.1m online and $79.5m at retail sportsbooks.
FanDuel and PointsBet at Meadowlands were the market leaders, posting $31.3m in revenue, up 125.4% from the previous year.
Resorts Digital and DraftKings followed with $14.1m, and then the Borgata with $6.3m.
Online gaming revenue for the month reached $113.7m, an increase of 75.4% from March 2020.
Online slots accounted for $111.0m of this total, with the remaining $2.7m attributed to peer-to-peer poker.
Read the full story on InnovateChange North America.