| Governmental Unit | State | Full/ Partial Special Census* | Special Census Day** | Official Population Counts | Official Housing Unit Counts | Download Data (XLS) | |
|---|---|---|---|---|---|---|---|
| West Dundee | Illinois | Full | 02-15-2025 | 8,372 | 3,735 | Demographic Profile | Block Counts |
| Volo | Illinois | Full | 03-01-2025 | 6,810 | 2,537 | Demographic Profile | Block Counts |
* Full Special Census: the entire governmental unit was included in the Special Census using current legal boundaries provided by the governmental unit.
* Partial Special Census: a portion of the governmental unit was included in the Special Census using current legal boundaries provided by the governmental unit.
** Special Census Day: the reference date that enumerators use when conducting interviews with respondents.
The above data includes U.S. Census Bureau official counts issued for completed Special Censuses conducted in Illinois during 2025.