Lincoln County, Missouri in the context of "St. Louis Metropolitan Statistical Area"

Greater St. Louis is the 23rd-largest metropolitan statistical area (MSA) in the United States consisting with an MSA population more than 2.8 million, and almost 3 million CSA the largest in Missouri, and the second-largest in Illinois. Its core city—St. Louis, Missouri—sits in the geographic center of the metro area, on the west bank of the Mississippi River. The river bisects the metro area geographically between Illinois and Missouri, although the latter portion is much more populous. The MSA includes St. Louis County, which is independent of the City of St. Louis; their two populations are generally tabulated separately.

The St. Louis, MO-IL metropolitan statistical area (MSA) includes the City of St. Louis; the Illinois counties of Bond, Calhoun, Clinton, Jersey, Macoupin, Madison, Monroe, and St. Clair (known collectively as the Metro East); and the Missouri counties of Crawford (only the City of Sullivan), Franklin, Jefferson, Lincoln, St. Charles, St. Louis (separate from and not inclusive of the city of St. Louis), and Warren.

The Missouri Rhineland (German: Missouri Rheinland) is a German American cultural region of Missouri that extends from west of St. Louis to slightly east of Jefferson City, located mostly in the Missouri River Valley on both sides of the river. The region overlaps with Little Dixie, a cultural region of central Missouri originally populated by “Old Stock” settlers from Kentucky, Virginia, and Tennessee. Dutzow, the first permanent German settlement in Missouri, was founded in 1832 by an immigrant from Lübeck, the "Baron" Johann Wilhelm von Bock. The area was named by Rhinelanders who noticed its similarities in soil and topography to the Rhineland region of Europe, a wine-growing area around the Rhine river. Rhinelanders settled the region, along with other Germans; by 1860, nearly half of all settlers in Missouri Rhineland were from Koblenz, capital of the Rhine Province.

The Rhenish Germans resided in the Missouri Rhineland: St. Louis, Kansas City, and the towns Gasconade, Franklin, Lincoln, Montgomery, Osage, Cole, Moniteau, Morgan, Pettis, Benton, Westphalia, Deepwater, and Henry. The German settlers of Hermann, known as "Deutschheim", came from the Rhineland through Philadelphia, Pennsylvania.

Troy is a city in Lincoln County, Missouri, United States. As of 2019, the estimated population was 12,820. It is the county seat of Lincoln County. Troy is an exurb of St. Louis, and is part of the St. Louis Metropolitan Statistical Area.