Select one of the following years to view official counts issued to governmental units in the State of Illinois. This information is updated frequently as additional Special Censuses are completed.
| * Full or Partial Special Census indicates whether the entire governmental unit (Full), or a portion of the governmental unit (Partial) was included in the Special Census using current legal boundaries provided by the governmental unit. ** Special Census Day refers to the reference date that enumerators use when conducting interviews with respondents. |
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| Governmental Unit | State | Full or Partial Special Census* | Special Census Day** | Official Population Count | Official Housing Unit Count |
|---|---|---|---|---|---|
| Bartlett | Illinois | Partial | 08-05-2005 | 30,071 | 10,660 |
| Carpentersville | Illinois | Partial | 06-30-2005 | 4,987 | 2,139 |
| Chatham | Illinois | Partial | 11-23-2005 | 3,083 | 1,135 |
| Collinsville | Illinois | Full | 06-30-2005 | 25,251 | 11,764 |
| Crystal Lake | Illinois | Partial | 05-13-2005 | 3,233 | 1,283 |
| Darien | Illinois | Partial | 11-10-2005 | 2,727 | 1,028 |
| Davis Junction | Illinois | Full | 08-31-2005 | 1,849 | 643 |
| Glenview | Illinois | Partial | 01-13-2005 | 4,520 | 2,218 |
| Harvard | Illinois | Partial | 08-10-2005 | 1,048 | 433 |
| Highland | Illinois | Partial | 10-21-2005 | 2,681 | 1,128 |
| Huntley #2 | Illinois | Partial | 06-10-2005 | 5,446 | 2,533 |
| Joliet #2 | Illinois | Partial | 08-09-2005 | 22,862 | 7,925 |
| Lebanon | Illinois | Full | 11-10-2005 | 4,033 | 1,483 |
| LeRoy | Illinois | Partial | 07-20-2005 | 506 | 210 |
| Lisle | Illinois | Partial | 01-13-2005 | 1,061 | 434 |
| Lombard | Illinois | Partial | 12-22-2005 | 3,708 | 2,181 |
| Manteno | Illinois | Full | 02-24-2005 | 8,146 | 3,423 |
| Matteson | Illinois | Partial | 11-04-2005 | 3,651 | 1,357 |
| Metamora | Illinois | Partial | 05-13-2005 | 393 | 154 |
| Minooka | Illinois | Partial | 02-25-2005 | 4,623 | 1,721 |
| Normal | Illinois | Partial | 08-19-2005 | 6,584 | 2,719 |
| Northbrook | Illinois | Partial | 04-14-2005 | 1,261 | 625 |
| O'Fallon | Illinois | Full | 10-13-2005 | 25,791 | 10,471 |
| Palos Heights | Illinois | Partial | 09-16-2005 | 1,766 | 834 |
| Palos Heights (one block) |
Illinois | Partial | 09-16-2005 | 588 | 9 |
| Plainfield #2 | Illinois | Full | 10-27-2005 | 30,314 | 10,186 |
| Port Barrington | Illinois | Full | 06-03-2005 | 1,595 | 577 |
| Richmond | Illinois | Partial | 04-12-2005 | 667 | 506 |
| Roscoe | Illinois | Full | 07-13-2005 | 8,780 | 3,390 |
| Shiloh | Illinois | Partial | 04-20-2005 | 5,138 | 1,885 |
| Smithton | Illinois | Partial | 04-07-2005 | 1,026 | 360 |
| Streamwood | Illinois | Partial | 10-26-2005 | 4,402 | 1,671 |
| Sugar Grove #2 | Illinois | Full | 10-19-2005 | 7,958 | 2,872 |
| Sycamore | Illinois | Full | 11/23/2005 | 14,866 | 6,456 |
| Valmeyer | Illinois | Full | 10-05-2005 | 1,124 | 450 |
| Vernon Hills | Illinois | Partial | 02-25-2005 | 3,901 | 1,856 |
| West Dundee | Illinois | Partial | 09-02-2005 | 1,860 | 818 |
| Wheeling | Illinois | Partial | 12-30-2005 | 5,835 | 2,742 |
| Wonder Lake #2 | Illinois | Partial | 06-10-2005 | 1,489 | 604 |
| Yorkville #2 | Illinois | Full | 11-16-2005 | 11,204 | 4,443 |
The above data includes U.S. Census Bureau official counts issued for completed Special Censuses conducted in Illinois during 2005.