Elmo is a CDP located in Lake County, Montana. Elmo has a 2026 population of 184. Elmo is currently growing at a rate of 0.55% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The median age in Elmo is 25.5 years: 53.4 years for males, and 15.7 years for females. For every 100 females there are 55.1 males.
Data after 2023 is projected based on recent change
Overall: 25.5 years
Female: 15.7 years
Male: 53.4 years
There are 155 adults, (56 of whom are seniors) in Elmo.
Female: 187 (64.5%)
Male: 103 (35.5%)
The racial composition of Elmo includes 90.34% Native American, 9.66% White, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| Native American | 262 | 90.34% |
| White | 28 | 9.66% |