Doug Childers, chair of RichmondRail.org, said he was pleased with the turnout.
"Culberson has said repeatedly there is no support in the neighborhoods for the Richmond option," Childers said. "The real point is to let him know he's dead wrong."
Bruce Butler, who lives on Milford Street a few blocks from Richmond, said he does not support the Southwest Freeway option because it would attract fewer riders and would require elevated tracks.
"We don't want a line running above one of Houston's crown jewels," Butler said. "Small businesses can recover from the construction, but no one can recover from an elevated rail that would cause sight and sound pollution."
Childers said support for RichmondRail.org is growing. Thousands have signed online petitions, and about 1,000 residents are signed up on the organization's e-mail list serve.
"Culberson talks like the only people who matter are the businesses on Richmond," said Jonathan Paull, one of the directors of RichmondRail.org. "What about the hundreds of people who live near Richmond who want clean, safe transportation?"