THE GEOGRAPHIC DIRECTORY
Chicago-Naperville-Elgin, IL-IN
Explore U.S. cities, villages, towns and townships by population. Browse this metro’s communities and relevant published commercial real estate guides below.
Population determines inclusion in this directory. Broker rankings remain in the separate regional guides. See sources and geography notes →
Communities in this metro.
38 communities in this metro area.
METROPOLITAN AREAChicago-Naperville-Elgin, IL-IN38 communities
| Community | State | 2025 population |
|---|---|---|
| Chicago cityCity / incorporated place · Population position 3 | Illinois | 2,731,585 |
| Aurora cityCity / incorporated place · Population position 155 | Illinois | 181,505 |
| Wheeling townshipTown / township · Population position 188 | Illinois | 154,050 |
| Naperville cityCity / incorporated place · Population position 189 | Illinois | 153,114 |
| North townshipTown / township · Population position 190 | Indiana | 152,714 |
| Thornton townshipTown / township · Population position 191 | Illinois | 152,667 |
| Joliet cityCity / incorporated place · Population position 193 | Illinois | 152,241 |
| Downers Grove townshipTown / township · Population position 198 | Illinois | 149,599 |
| Worth townshipTown / township · Population position 202 | Illinois | 148,514 |
| Proviso townshipTown / township · Population position 209 | Illinois | 147,144 |
| Maine townshipTown / township · Population position 234 | Illinois | 136,611 |
| Schaumburg townshipTown / township · Population position 242 | Illinois | 131,411 |
| York townshipTown / township · Population position 250 | Illinois | 128,137 |
| Aurora townshipTown / township · Population position 252 | Illinois | 127,446 |
| Milton townshipTown / township · Population position 283 | Illinois | 119,815 |
| Lisle townshipTown / township · Population position 284 | Illinois | 119,740 |
| Elgin cityCity / incorporated place · Population position 297 | Illinois | 115,476 |
| Lyons townshipTown / township · Population position 315 | Illinois | 112,345 |
| Palatine townshipTown / township · Population position 321 | Illinois | 111,179 |
| Bloomingdale townshipTown / township · Population position 324 | Illinois | 111,039 |
| Niles townshipTown / township · Population position 329 | Illinois | 109,978 |
| Naperville townshipTown / township · Population position 338 | Illinois | 107,908 |
| Elgin townshipTown / township · Population position 348 | Illinois | 106,210 |
| Bremen townshipTown / township · Population position 363 | Illinois | 104,303 |
| Hanover townshipTown / township · Population position 397 | Illinois | 97,956 |
| Orland townshipTown / township · Population position 405 | Illinois | 96,641 |
| Elk Grove townshipTown / township · Population position 429 | Illinois | 93,072 |
| Wheatland townshipTown / township · Population position 430 | Illinois | 92,693 |
| Leyden townshipTown / township · Population position 450 | Illinois | 90,402 |
| Northfield townshipTown / township · Population position 455 | Illinois | 89,835 |
| Calumet townshipTown / township · Population position 457 | Indiana | 89,730 |
| Algonquin townshipTown / township · Population position 460 | Illinois | 89,435 |
| Waukegan townshipTown / township · Population position 463 | Illinois | 89,045 |
| Du Page townshipTown / township · Population position 473 | Illinois | 88,043 |
| Waukegan cityCity / incorporated place · Population position 474 | Illinois | 87,940 |
| Addison townshipTown / township · Population position 475 | Illinois | 87,841 |
| Joliet townshipTown / township · Population position 491 | Illinois | 86,200 |
| Plainfield townshipTown / township · Population position 499 | Illinois | 85,115 |
No matching communities. Try another name or area type.
SOURCES & GEOGRAPHY
Understand the boundaries.
Population is the Census Bureau July 1, 2025 estimate (Vintage 2025), downloaded November 8, 2026. Population position is a geographic selection order, not a broker rating.
Groups use the July 2023 OMB metropolitan and micropolitan delineations published by Census. Counties outside either are grouped by state. For places crossing boundaries, the area containing the greatest estimated resident population is the primary group; other populated areas are identified. Equal populations are ordered by state, name and geographic identifiers.