The data presented on this web site does not constitute the Property Record Card mandated by the Illinois Property Tax Code. A true copy of the Property Record Card can be obtained only at the Algonquin Township Assessor's Office. Web site property data is intended only for basic research because, while deemed reliable, they may not be accurate and/or current due to assessor database and web site database updating anomalies. Data presented on this website may be used as a foundation for appeal comparable property selection or other uses only after they have been verified as correct by the Algonquin Township Assessor's Office.