The Hinckley Big Rock Community Unit School District 429 district serves all or some of: Big Rock, DeKalb, and Hinckley. Hinckley Big Rock Community Unit School District 429 currently has 14 single family homes for sale with an average list price of $518,763.21 and 3 condos for sale with an average list price of $218,000 that attend the district. The average annual property tax for Hinckley Big Rock Community Unit School District 429 is $6,124.10.