@Daniel Lance Putnam County it is. You picked, so now I am going to make it real specific for you, because Florida runs its delinquent list a little different than most states and I do not want you hunting for a page that is not there. In Florida there is no plain delinquent list sitting on the treasurer's site. Unpaid taxes turn into TAX CERTIFICATES, and the county advertises that list every year in late May and sells the certificates on or before June 1. So the file you want is the Putnam County Tax Collector's tax certificate sale list, and the freshest one just ran this past June. Search the county name plus tax certificate sale. A lot of Florida counties run those sales through LienHub, so if the Tax Collector's page points you there, that is the right door. Now here is the filter that separates you from everybody else pulling that same list. Do not work the one year delinquents. Work the parcels carrying TWO OR MORE years of certificates. One year is somebody who forgot. Three years is somebody who has mentally walked away from that dirt. That is your seller. Then go one level hotter. In Florida, once a certificate is two years old the holder can apply for a tax DEED, and tax deed sales are run by the Clerk of Court, not the Tax Collector. Pull the Putnam County Clerk of Court tax deed sale list. It is short, it is free, and every owner on it is about to lose the property on a date certain. Those people answer the phone. For the out of state filter, use the Putnam County Property Appraiser site. It gives you the owner's MAILING address next to the property address, plus acreage and the land use code. Filter to vacant land use, 1 to 10 acres, and mailing state not FL. That is your list. Two Putnam specific things that will save you from buying a bad parcel. Number one, check access. A parcel with no legal road frontage is close to worthless, and there is a lot of it out there. Number two, check wetlands and flood. Putnam sits on the St Johns River and a good chunk of that county is low and wet. Pull the county GIS map and the FEMA flood layer on every parcel before you send a number. Also remember there is no sewer out there, so if it will not perc for a septic system, nobody is building anything on it.