 Under this formula, the District of Columbia contributes the greatest amount (34 %), followed by Montgomery County (18.7 %), Prince George's County (17.9 %), Fairfax County (14.3 %), Arlington County (9.9 %), the City of Alexandria (4.7 %), the City of Falls Church (0.3 %), and the City of Fairfax (0.3 %). From time to time, a local jurisdiction will agree to subsidize a specific fare, with the jurisdiction funding the cost of the subsidy in addition to its contribution under the above formula. For example, the District of Columbia subsidized the fares charged at Metrorail stations located in economically challenged neighborhoods.
