Seattle Light Rail Carried More Riders in April Than Any Other System in the United States

The national ranking requires some context. Seattle’s top position applies specifically to light rail comparisons. Cities like New York, Washington DC, and Boston operate heavy rail subway systems that far outpace Seattle’s network in total ridership. When all rail types are counted together, including Sounder commuter rail, Seattle’s system ranked eighth among urbanised areas nationally in April.

Sound Transit also cautions that the March and April figures are preliminary. Because the system underwent significant structural changes around the time the new stations opened, the agency says adjusted numbers published later this year may shift more than in typical reporting periods. Nevertheless, Sound Transit spokesperson Henry Bendon described the ridership increase as “huge,” and the underlying trend is clear. Average daily ridership reached approximately 155,000 in April and May, up from 122,600 in February and around 107,000 in April 2025.

Transit researchers say the numbers are striking given how young and compact Seattle’s system remains. “Seattle’s light rail system carries a surprisingly high number of people for its size and age,” said Yonah Freemark, who researches transit at the Urban Institute. “Compared to systems in Los Angeles and in San Diego, it’s decades younger. And it’s a shorter system, with only about 63 miles of service compared to more than 100 in Los Angeles. So that means it’s attracting more people despite not being as extensive.”

The record ridership arrives as Sound Transit continues to plan further expansion, though several projects including the full Ballard extension have been delayed as the agency works through a multibillion-dollar budget shortfall. How the system manages that tension between growing demand and constrained resources will shape Seattle’s transit future for decades.