Illinois city quiz
Name every city and town in Illinois on a blank map. 1,294 incorporated cities and towns and 167 unincorporated communities, each with its real boundary. Type a name and its borders fill in on a street map that has highways and parks but no place names.
Largest cities in Illinois
| # | City | Population | Land area (sq mi) | People per sq mi |
|---|---|---|---|---|
| 1 | Chicago | 2,731,585 | 227.8 | 11,994 |
| 2 | Aurora | 181,505 | 45.2 | 4,011 |
| 3 | Naperville | 153,114 | 39.4 | 3,889 |
| 4 | Joliet | 152,241 | 66.3 | 2,298 |
| 5 | Rockford | 147,384 | 65.4 | 2,254 |
| 6 | Elgin | 115,476 | 38.2 | 3,019 |
| 7 | Springfield | 112,989 | 61.3 | 1,842 |
| 8 | Peoria | 110,920 | 48.2 | 2,302 |
| 9 | Champaign | 91,195 | 23.0 | 3,960 |
| 10 | Waukegan | 87,940 | 24.3 | 3,625 |
Population: Census Bureau July 2025 estimates. Land area: 2025 Census boundaries.
Largest unincorporated communities
Gages Lake (10,637), Frankfort Square (8,968), Boulder Hill (8,394), Lake Holiday (5,687), and Grandwood Park (5,297). Communities count in the quiz unless you switch them off in Options.
Metro quizzes in Illinois
Questions
How many cities are in Illinois?
The Census Bureau’s 2025 boundary files list 1,294 incorporated places in Illinois: 300 cities, 16 towns, and 978 villages. There are also 167 unincorporated communities (census-designated places), which this quiz includes unless you switch them off. That makes 1,461 places to find in total.
What is the largest city in Illinois?
By population, Chicago, with 2,731,585 people (July 2025 estimate). It is also the largest by land area, at 227.8 square miles.
What is the most densely populated city in Illinois?
Among places with at least 10,000 people, Berwyn is the densest, with about 14,103 people per square mile on 3.90 square miles of land.
What is the smallest town in Illinois?
By population, Valley City, with 13 people (July 2025 estimate).
How does the Illinois city 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.
Is it free?
Yes. Every US quiz is free. Sign in with your email to save progress across devices and appear on the leaderboards.