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is a city in Dallas County, Iowa, United States. The population was 689 at the 2000 census. It is part of the Des Moines–West Des Moines Metropolitan Statistical Area. Dexter was named after the famous trotting horse Dexter.
The city is famous for being the site of a shootout between members of the Barrow gang and police from nearby Des Moines, and also for being the site of a plowing match where at President Harry Truman delivered a speech attacking the 80th Congress for its record in regard to the American farmer. This speech is considered one of the most important of his 1948 Whistle Stop campaign that turned the tide of the election and returned him to the White House.
Dexter is the birthplace of Conger Reynolds, United States Ambassodor to China during the Boxer Rebellion.