Union County

Berkeley Heights
Clark
Cranford
Elizabeth
Fanwood
Garwood
Hillside
Kenilworth
Linden
Mountainside
New Providence
Plainfield
Rahway
Roselle
Roselle Park
Scotch Plains
Springfield
Summit
Union
Westfield
HASC code :US-NJ-UN
FIPS 6-4 code :34039
Capital :Elizabeth
Largest city :Elizabeth
Elevation :High : Summit 388 ft
Low : Springfield 0 ft
Population :522,541
Land Area :103 sq mi
(267 km²)
Density :5,073.21/sq mi
(1,958.78/km²)
Time zone :UTC -5
Website :http://www.unioncountynj.org