Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. Every office link was opened and checked against the office's own site between September 24, 2026 and September 30, 2026.
Sully County, South Dakota, has about 1,500 residents (2024 Census Bureau estimate). The title to a parcel in Sully County is in the deed records of the Register of Deeds and its taxable value is set by the Director of Equalization; what is built on it is a matter for the city or the county. This guide says who keeps each record and where the page for each office is.
This guide covers deeds, assessed values, evictions and court cases, records requests, directory links and common questions.
Related guides: Sully County public records, Sully County arrest records, Sully County warrants, Sully County inmate search, Sully County criminal records, South Dakota arrest records and South Dakota inmate search.
Deeds, Mortgages and Liens in Sully County
Who owns a parcel in Sully County and what it sold for are in the deed records of the Register of Deeds, with every lien or mortgage against the land.
SearchSystems opened and checked the Register of Deeds' page at sully.sdcounty.gov/offices/registerofdeeds (page title: Register of Deeds | Sully County SD), phone (605) 258-2331, which answered when SearchSystems opened it on September 30, 2026.
Assessed Values and the Tax Roll in Sully County
What a parcel in Sully County is taxed on is the business of the Director of Equalization, which also keeps the parcel maps.
SearchSystems opened and checked the Director of Equalization's page at sully.sdcounty.gov/offices/equalization (page title: Equalization | Sully County SD), phone (605) 258-2522, which answered when SearchSystems opened it on September 30, 2026.
Evictions and Court Cases About Land in Sully County
An eviction, a foreclosure, a lien dispute or a quiet title suit is a court case in the Circuit Court for Sully County, and the file is public unless sealed.
The court records page SearchSystems verified for the county is at ujs.sd.gov/cases-and-records.
Asking a County Office for a Record
Under the South Dakota Open Records Law a county office must answer a request within 10 business days, and it may charge copying and staff time.
More Official Property and Land Records Pages for Sully County
The SearchSystems directory, online since 1997, lists the official pages for Sully County and South Dakota. These recorded document pages from its Sully County listing were opened again on October 2, 2026 and each one still answers:
- Register of Deeds (dakotaathome.sd.gov)
Frequently Asked Questions
Who records deeds in Sully County?
The Register of Deeds, at sully.sdcounty.gov/offices/registerofdeeds, phone (605) 258-2331. Deeds, mortgages and liens on land in Sully County are filed there, and the Director of Equalization (sully.sdcounty.gov/offices/equalization) has the assessment records.
Who sets the assessed value of a property in Sully County?
The Director of Equalization, whose page SearchSystems verified is at sully.sdcounty.gov/offices/equalization.
Where are evictions from Sully County filed?
In the Circuit Court for Sully County. The file is public unless the court seals it.
Is this the official Sully County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.