The railroad says ridership grew nearly one percent from October 2012 to March despite disruptions from weather, including Superstorm Sandy. Amtrak said 26 of 45 routes had rider increases.
Amtrak was expected to release full data on the ridership numbers on Tuesday morning.
The railroad says October, December and January also set individual monthly records.
Amtrak says it expects to end the fiscal year in September either meeting or exceeding last year's total of 31.2 million riders.