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County

NameStatusPopulation
census
2000-04-01
Population
census
2010-04-01
Population
estimate
2013-07-01
 
Lewis and ClarkCounty55,71663,39565,338
MontanaFederal State902,200989,4171,015,165

Contents: Incorporated Places

Name StatusCountyPopulation
census
2000-04-01
Population
census
2010-04-01
Population
estimate
2013-07-01
 
East HelenaCityLewis and Clark1,6602,0112,052
HelenaCityLewis and Clark26,14528,19729,596

Source: US Census Bureau (web).
2000 population of places in the boundaries of 2010. Later population figures refer to the boundaries of 2013.