The Taxpayer Tea Parties were never expected to be a “Million Man March,” but according to a tally by Americans for Tax Reform, a safe estimate is that on tax day upwards of half a million people attended various protests against out-of-control government spending. Since tax day, ATR has been collecting reports of tea parties held around the country.

The group's list identifies 540 events with a total of 578,000 people attending. Their tally for attendees is based on newspaper and police reports for the events.

ATR is still collecting reports. If an event you attended is not on the list, please go to the ATR blog and leave a comment (in response to the post, Updated: How Many People Attended the Tax Day Tea Parties?) identifying the event location, the number of attendees, and a news source to verify.