Rank  Year  Approximate Attendance        City              Territory                    Issue                                                Name
 25   2023          200,000         Washington D. C.   District of Columbia     Free Palestine movement     National March on Washington: Free Palestine
 26   2023          195,000         Washington D. C.   District of Columbia        Pro-Israel March         March for Israel
  1   2020        20,500,000           Nationwide              USA                 Police Brutality         George Floyd Protests/2020–2023 United States racial unrest
  6   2019        1,100,000             San Juan           Puerto Rico              Anti-corruption         #RickyRenuncia
 18   2019          315,000           New York City          New York                Climate Change         September 2019 climate strikes
  4   2018        1,600,000            Nationwide              USA                    Gun control           March for Our Lives
  5   2018        1,500,000            Nationwide              USA                     Feminism             2018 Women's March
  3   2017        4,450,000            Nationwide              USA                     Feminism             2017 Women's March
 13   2017          700,000            Nationwide              USA                      Science             March for Science
 27   2015          130,000           Los Angeles           California       Armenian genocide recognition  2015 Armenian March for Justice
 17   2014          355,500           New York City          New York                Climate Change         People's Climate March
 14   2013          525,000         Washington D.C.    District of Columbia          Anti abortion          March for Life
 23   2010          215,000         Washington D.C.    District of Columbia         Civil discourse         Rally to Restore Sanity and/or Fear
 19   2009          311,000            Nationwide              USA                Fiscal conservatism       Tea Party Tax Day protests
  7   2006        1,000,000            Nationwide              USA                 Immigrant rights         Great American Boycott
 11   2004          750,000         Washington D.C.    District of Columbia            Feminism             March for Women's Lives
 22   2003          287,500           New York City          New York                Anti-Iraq War          February 15 Iraq war protests
 12   2000          750,000         Washington D.C.    District of Columbia           Gun control           Million Mom March
 29   1999          40,000              Seattle             Washington             Anti-globalization       1999 Seattle WTO protests
 15   1997          500,000           Philadelphia         Pennsylvania              Black feminism         Million Woman March
 10   1995          735,000         Washington D.C.    District of Columbia           Anti-racism           Million Man March
 28   1994          70,000            Los Angeles           California             Immigrant rights         Proposition 187 Protests
  8   1993          900,000         Washington D.C.    District of Columbia           LGBT rights           March on Washington for Lesbian, Gay and Bi Equal Rights and Liberation
 24   1987          200,000         Washington D.C.    District of Columbia           LGBT rights           March on Washington for Lesbian and Gay Rights
  9   1982          850,000           New York City          New York                Anti-nuclear           Anti-nuclear weapon march, part of the Nuclear Freeze campaign
 21   1981          255,000         Washington D.C.    District of Columbia          Labor rights           Solidarity Day march
  2   1970        20,000,000           Nationwide              USA             Environmental protection     Earth Day
 16   1969          500,000         Washington D.C.    District of Columbia        Anti-Vietnam War         Moratorium to End the War in Vietnam
 20   1963          275,000         Washington D.C.    District of Columbia          Civil rights           March on Washington for Jobs and Freedom