The annual conference draws in over 300 people representing around 70 cities and towns across the state.
The league of 129 Montana municipalities acts as an advisory board between city officials and state/federal government. They talked about tax increment funds, labor and employment, and downtown development.
Closing topics revolved around oil development, where the mayor of Glendive said the eastern half of Montana isn't the only place feeling the impact of the Bakken.
"We're looking at $240 million pouring into the state that nobody was really counting on," said Mayor Jerry Jimison. "That money that goes into the state general fund is divided among all 56 counties. So the whole state is benefiting from what is going on in a very small portion of the state."
Jobs in Eastern Montana might be the biggest boom of all - Fallon County reported an unemployment rate of 1.8% in August.