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Country :
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United States
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State :
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Delaware
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County :
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New Castle
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Founded :
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March 1638
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Incorporated :
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1731
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Borough Charter :
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1739
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City Charter :
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March 7, 1832
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Named for :
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Spencer Compton, 1st Earl of Wilmington
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• Type :
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Council-mayor
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• Mayor :
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Mike Purzycki (D)
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• City :
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70,851
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• Land :
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10.904 sq mi (28.24 km2)
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• Water :
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6.039 sq mi (15.64 km2)
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Elevation :
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92 ft (28 m)
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• Estimate (2018)[4] :
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70,635
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• Rank :
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US: 483rd
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• Density :
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6,551.91/sq mi (2,529.68/km2)
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• Metro :
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6,069,875 (US: 8th)[3]
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Time zone :
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UTC-5 (EST)
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• Summer (DST) :
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UTC-4 (EDT)
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ZIP codes :
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19801-19810, 19850, 19880, 19884-19886, 19890-19899
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Area code(s) :
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302
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FIPS code :
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10-77580
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GNIS feature ID :
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214862[5]
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Website :
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ci.wilmington.de.us
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