Main city: Marble Hill
Timezone: Central
Phone type: Landline
Operator: Level 3 Communications

Marble Hill, a fourth-class city in central Bollinger County in Southeast Missouri in the United States. Located at the intersection of State Highway 34 and State Highway 51, it is the largest city in Bollinger and serves as the county seat . The population was 1,477 at the 2010 census. The city was officially organized in July 1851 and is named after a marble-like rock. ^source

Area code 573 serves most of the eastern half of Missouri outside the immediate St. Louis area. It extends across nearly the entire width of the state, with the state's northeast corner as the northeastern tip, the Lake of the Ozarks at the western tip and Doniphan as the southwestern tip. It also serves all of southeastern Missouri (including the Missouri Bootheel area) and areas adjacent to the Mississippi River. It was created on January 7, 1996 as a split from area code 314. ^source