Philadelphia

The flag of the city and county of Philadelphia, Pennsylvania, is a vertical tricolor of blue and yellow with the city's coat of arms in the center.
== Symbolism ==
The plow and sailing ship also appear on Pennsylvania's arms, and together these two symbols reflect the early commercial interests of the city—agriculture and maritime commerce. The ship derives from the seal of the Society of Traders, organized in London to promote the settlement of Pennsylvania.Philadelphia, Pennsylvania on CRW Flags The blue and yellow are the Swedish colors, which symbolizes Swedish colonization of the city.
== 2004 NAVA survey ==
The flag scored 5.30 / 31st out of 150 on the 2004 NAVA City Flag Survey, behind Seattle, and ahead of Buffalo.
== References ==
Category:Pennsylvania
Category:United States Cities
Category:Blue
Category:Yellow
Category:Coat of Arms
Category:Purple
Category:Birds
Category:2004 NAVA City Flag Survey
Category:Eastern USA
Category:Proportions 3-5