Helena
- County:
- Lewis and Clark County
- County Seat:
- Yes
- Area (mi²):
- 17.251
- State:
- Montana
Helena is a city located in Lewis and Clark County, Montana. Helena has a 2026 population of 34,729. It is also the county seat of Lewis and Clark County. Helena is currently growing at a rate of 1.05% annually and its population has increased by 7.67% since the most recent census, which recorded a population of 32,255 in 2020.