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County

NameStatusPopulation
census
2000-04-01
Population
census
2010-04-01
Population
estimate
2012-07-01
 
Lewis and ClarkCounty55,71663,39564,876
MontanaFederal State902,200989,4171,005,141

Contents: Incorporated Places

Name StatusCountyPopulation
census
2000-04-01
Population
census
2010-04-01
Population
estimate
2012-07-01
 
East HelenaCityLewis and Clark1,6602,0112,043
HelenaCityLewis and Clark26,14528,19829,134

Source: US Census Bureau (web).
2000 population of places in the boundaries of 2010. Later population figures for places in the boundaries of 2012.