Lisbon is a city in Linn County, Iowa, United States, adjacent to the city of Mount Vernon. The population was 2,233 at the time of the 2020 cen…Lisbon is a city in Linn County, Iowa, United States, adjacent to the city of Mount Vernon. The population was 2,233 at the time of the 2020 census. It is part of the Cedar Rapids Metropolitan Statistical Area.
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