This must be from New Jersey for a Property Tax Deduction/Credit for Homeowners and Tenants. You will have to enter this in the New Jersey interview. You'll find that question under Taxes and Credits in the New Jersey section of the return: Property Tax Deduction or Credit
Enter the Block and Lot Numbers of the property that you owned and occupied as your principal residence on December 31, 2018, as long as property taxes were paid on that home. If you were not a homeowner on December 31, enter the information for the last home you owned and occupied in New Jersey during the year. Include qualifier, if applicable (condominiums only). You can get this information from your property tax bill or from your local tax collector. If you were a tenant, make no entry.
See page 29 for the example:
https://www.state.nj.us/treasury/taxation/pdf/current/1040i.pdf
