ZIP Code 59632
About Boulder
Boulder is a town in and the county seat of Jefferson County, Montana, United States. It is on the north bank of the Boulder River between Butte and Helena, slightly east of the Continental Divide, at the intersection of Interstate 15 and Montana Highway 69. The population was 1,201 at the 2020 census. It is part of the Helena Micropolitan Statistical Area, which includes all of Lewis and Clark and Jefferson counties; its population is 83,058 according to the 2020 Census.
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Area Profile
US Census (ACS 5-year · Gazetteer)
2,535
population
$62,770
median household income
6
people / sq mi
$260,600
median home value
$691
median gross rent
43.9
median age
1,099
housing units
1,012
households
444.1
land area (sq mi)
Points of interest
- grocery