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is a city in Mahoning County, Ohio, United States. The population was 9,460 at the 2000 census. Residents generally pronounce the city's name as "camel" , with a silent "B". Campbell is served by a branch of the Public Library of Youngstown and Mahoning County. It is part of the Youngstown-Warren-Boardman, OH-PA Metropolitan Statistical Area.
Campbell was formerly known as the village of East Youngstown, and this designation still appears on real estate deeds for the city. In 1922, the city was renamed for local industrialist James A. Campbell, then chairman of the Youngstown Sheet and Tube Company. A major destination for immigrants from Southern and Eastern Europe, Campbell is sometimes referred to as the "City of Churches," because of the wide variety of religious structures found throughout the community.
According to the United States Census Bureau, the city has a total area of 3.7 square miles (9.7 km²), all of it land.