The Common Council serves as the legislative and fiscal body for the City of Garrett. The Council considers and adopts all ordinances, orders, resolutions and motions for governing the city. The Council also authorizes City expenditures by adopting the annual City budget.

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The City is divided into four Councilmanic districts, each with its own Council representative. A Council-at-large seat, encompassing the entire City, comprises the fifth seat on the Council.

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The Council meets the 1st and 3rd Tuesday of each month at 7:00 p.m.