Tri-Cities | |
|---|---|
 .jpg)    Clockwise from top: Fox River, Fermi National Accelerator Laboratory, St. Charles Municipal Building, Dutch Mill in Batavia, Central Geneva Historic District | |
 | |
| Country |  United States of America |
| State |  Illinois |
| County | Kane, DuPage |
| Founded | 1833-1835 |
| Townships | List of townships |
| Government | |
| • Mayor of Batavia | Jeffery D. Schielke |
| • Mayor of Geneva | Kevin Burns |
| • Mayor of St. Charles | Lora Vitek |
| Population (2014) | |
• Total | 81,532 (est.) |
| Time zone | UTC-6 (CST) |
| ZIP codes | 60510, 60134, 60174, 60175 |
| Area codes | 630 |
The Tri-Cities, or Tri-City area, is a vernacular region that is situated between the large cities of Aurora and Elgin, Illinois, and encompasses the cities of Batavia, Geneva, and St. Charles.
A "vernacular region" is a distinctive area where the inhabitants collectively consider themselves interconnected by a shared history, mutual interests, and a common identity. Such regions are "intellectual inventions" and a form of shorthand to identify things, people, and places. Vernacular regions reflect a "sense of place," but rarely coincide with established jurisdictional borders.[1]
The Tri-City area is primarily located in Kane County, though Batavia and St. Charles include parcels in DuPage County. The three communities are often grouped together due to their shared history, close proximity on the Fox River, relative socioeconomic condition, and similar population sizes. They are among the oldest in Kane County as well as the state.
- ^ [Scheetz, George H.] "Whence Siouxland?" Book Remarks [Sioux City Public Library], May 1991.