The fifth player earning more than a million is the New York Red Bulls' Juan Pablo Angel ($1.59 million).
About 70 players, who are on developmental contracts, earn less than $20,000 per year.
More than 40 players earn the minimum senior salary of $33,000.
While Gallardo is the highest-paid player in D.C. United history, Washington Post reporter Steven Goff points out that the rest of the club's roster combines for $2.3 million.
The MLS Players Union Web site provides salaries of the league's 14 teams:
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