Welcome to the Grand County Tax Information search site. Search for information by entering one of these in the search bar: 1. Parcel Number - in this format XX-XXXX-XXXX. 2. Owners Name - last name first, try portion of the name if no result. 3. Property Address - street name first, try portion of name if no result. The 2018 Tax Notice will not be available until late October 2018. The information contained herein is believed to be accurate and dependable. However, no warranties implied or expressed exist regarding the veracity of the data.