St. Louis metro city quiz
Greater St. Louis in Missouri and Illinois. Name all 269 cities and towns and 36 communities on a blank map. Boundaries are especially helpful here, where dozens of cities sit side by side.
Largest cities in the St. Louis area
| # | City | Population | Land area (sq mi) | People per sq mi |
|---|---|---|---|---|
| 1 | St. Louis, MO | 278,144 | 61.7 | 4,507 |
| 2 | O'Fallon, MO | 96,101 | 31.0 | 3,101 |
| 3 | St. Charles, MO | 72,561 | 25.2 | 2,875 |
| 4 | St. Peters, MO | 61,479 | 22.5 | 2,729 |
| 5 | Florissant, MO | 51,124 | 12.6 | 4,074 |
| 6 | Wentzville, MO | 49,495 | 22.0 | 2,249 |
| 7 | Chesterfield, MO | 49,309 | 31.8 | 1,550 |
| 8 | Belleville, IL | 40,237 | 23.2 | 1,731 |
| 9 | Wildwood, MO | 34,955 | 67.0 | 521 |
| 10 | University City, MO | 34,657 | 5.9 | 5,894 |
Population: Census Bureau July 2025 estimates.
Play the whole state
Questions
How many cities are in the St. Louis metro area?
Greater St. Louis in Missouri and Illinois. Its 15 counties hold 269 incorporated cities and towns (147 cities, 10 towns, and 112 villages) and 36 unincorporated communities, for 305 places in this quiz.
Which counties are in the St. Louis quiz?
Bond County, IL, Calhoun County, IL, City of Saint Louis, MO, Clinton County, IL, Franklin County, MO, Jefferson County, MO, Jersey County, IL, Lincoln County, MO, Macoupin County, IL, Madison County, IL, Monroe County, IL, Saint Charles County, MO, Saint Clair County, IL, Saint Louis County, MO, and Warren County, MO. The list follows the federal metropolitan area definition.
What is the largest city in the St. Louis metro?
St. Louis, MO, with 278,144 people (July 2025 estimate). The next largest are O'Fallon, St. Charles, and St. Peters.
How does the metro quiz work?
Type a city, town or community and press Enter. If it is in the quiz, its real boundary fills in green on a blank street map that has highways, parks and water but no place names. A name shared by several places, like Springfield, fills in all of them at once. Hover a found city to see its population, land area and density, ranked within its state. Only places inside the metro’s counties count.