There are 9 cities in Lewis and Clark County, Montana.

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Helena1Montana35,51532,2302.35%2,11116.82
Helena Valley Southeast2Montana9,3748,546 65614.30
Helena Valley West Central3Montana8,2068,042 31126.39
Helena Valley Northwest4Montana5,1434,256 31416.38
Helena Valley Northeast5Montana4,2453,519 9146.50
East Helena6Montana2,0491,9481.23%5104.02
Helena West Side7Montana1,5911,656 11214.16
Lincoln8Montana1,0051,017 5717.55
Augusta9Montana215238 2330.92
showing: 9 rows

Cities in Lewis and Clark County, Montana by Population (2024)

What is the largest city in Lewis and Clark County, Montana?

Helena is the largest city in Lewis and Clark County.

What is the smallest city in Lewis and Clark County, Montana?

Augusta is the smallest city in Lewis and Clark County.

How many cities are in Lewis and Clark County?

There are 9 cities in Lewis and Clark County, Montana.

Frequently Asked Questions