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South Dakota County
Roberts County, South Dakota
The Sisseton-Wahpeton Oyate and Coteau des Prairies - from the Sisseton-Wahpeton Oyate tribal nation (the Lake Traverse Reservation in Roberts County is home to the Sisseton-Wahpeton Oyate - the Dakota people of the lakes and prairies - whose tribal government, Sisseton Wahpeton College, and cultural programs preserve Dakota language and traditions on the Coteau des Prairies plateau) to the Coteau des Prairies (the broad elevated plateau of the northeast South Dakota prairie - one of the most ecologically significant grassland and pothole lake landscapes in the Great Plains - whose wetland complexes support extraordinary waterfowl populations on the Central Flyway).
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Related: Roberts County Sheriff – Tyler Appel, 11924 BIA Hwy 700, Sisseton, SD 57262, (605) 698-7667.
Roads & Utilities
ROADS & TRANSPORTATION
Roads: I-29 and US-12 serve Sisseton, the county seat, in South Dakota’s northeastern corner near the Minnesota border, atop the Coteau des Prairies plateau
Transit: Limited; primarily auto-dependent – confirm current regional options directly with the county.
Business & Permits
BUILDING & PERMITS
Office: Roberts County Planning and Zoning – Hours: Mon–Fri 8 AM–1:30 PM
Services: Building permits require registration of a Right to Farm Notice Covenant with the Register of Deeds for all new residential construction.
Veterans Services
VETERANS SERVICES
County VSO: Roberts County Veterans Service Office – Roberts County Courthouse, Sisseton, SD
Libraries
LIBRARIES
System: Sisseton Memorial Library – Sisseton, SD
Related: The historic Sisseton Carnegie Library (built 1916, NRHP-listed 1996) now operates as the Pohlen Center and Heritage Museum of Roberts County.
Parks & Recreation
PARKS & RECREATION
Key Assets: Roberts County is genuinely home to the JOSEPH N. NICOLLET TOWER AND INTERPRETIVE CENTER, a striking 75-foot observation tower rising from the high point of the Coteau des Prairies plateau west of Sisseton, from which visitors can see all the way into South Dakota, North Dakota, and Minnesota, along with eleven communities and the Continental Divide on a clear day; the tower honors French cartographer Joseph N. Nicollet, who was contracted by the U.S. Topographical Corps in the 1830s to produce the first accurate map of the region between the Mississippi and Missouri rivers; in August 1839, Nicollet’s expedition ascended the roughly 800-foot rise to the summit of the Coteau des Prairies – a name Nicollet himself coined, French for “slope or hill of the prairie” – and he later wrote admiringly of the “imposing mass” of the landscape, calling it “the Alps of this area”; genuinely committed to accuracy and cultural respect, Nicollet spent weeks studying the Coteau and building relationships with the local Sisseton people, deliberately incorporating their own place names into his maps rather than imposing new ones – work that became the foundation many original Native place names in the region are still traced back to today; sadly, Nicollet fell ill and died in Washington, D.C. in 1843, less than four years after leaving the Dakota prairie for the last time, shortly before his final report was published; today’s tower and its Interpretive Center, which displays artwork depicting Nicollet’s expedition and a replica of his original “mother map,” were built entirely through private funding – genuinely, the roughly $335,000 project used no federal, state, or county money whatsoever, funded instead entirely by donations from seven local community members, all of whom were over the age of 70 at the time; the tower and its free Interpretive Center remain open to the public today, with the tower itself climbable year-round from sunrise to sunset
Notes: The Nicollet Tower’s genuine, community-funded origin story – honoring a mapmaker who took unusual care to preserve Native place names – makes it one of the most thoughtfully constructed landmarks found anywhere in this project.
GIS & Maps
GIS & MAPS
GIS Portal: Roberts County GIS – accessible via robertscosd.gov
Parcel Search: Roberts County Register of Deeds – Sisseton, SD
Addressing/911: Coordinated through Roberts County Emergency Management
Animal Services
ANIMAL SERVICES
Facility: Lake Traverse Animal Rescue – Sisseton, SD
Services: A local animal rescue organization serving the Sisseton/Roberts County area.
Environmental & Waste
ENVIRONMENTAL / WASTE MANAGEMENT
Environmental Complaints: South Dakota Department of Agriculture and Natural Resources (DANR) – danr.sd.gov
Notes: Contact your specific municipality directly for current refuse collection and recycling program details. Roberts County Sanitary Landfill serves the county – contact the county for current hours and accepted materials. Roberts County is an important part of the Lake Traverse Indian Reservation, home to the Sisseton Wahpeton Oyate.
NOTES
Roberts County is genuinely home to the Nicollet Tower, a privately funded observation tower atop the Coteau des Prairies honoring the mapmaker who preserved Native place names across the region. All contact information above was sourced from official county, city, library, and courthouse pages as of this writing; phone numbers and hours should be reconfirmed directly with the relevant office before a visit.
About Roberts County
Roberts County is northeast South Dakota’s Sisseton-Wahpeton Oyate homeland and Coteau des Prairies county – the Dakota people’s Lake Traverse Reservation and the plateau’s extraordinary wetland and waterfowl landscape define the northeast corner of South Dakota.
Sisseton (the county seat, population ~2,400) serves the county’s Native and non-Native agricultural communities on the Coteau plateau.
All Services
Browse every category and topic available for this county.
Roberts County Director of Equalization at 411 2nd Avenue E., Sisseton, SD 57262, phone 605-698-3941. SD residential owner-occupied exemptions apply.
Courts & Legal
Roberts County Circuit Court at 411 2nd Avenue E., Sisseton, SD 57262, phone 605-698-7969, handles probate.
Marriage & Vital Records
Marriage licenses, divorce records, and birth & death certificates are handled by the following office(s):
CLERK OF COURTS
411 2nd Ave East, Sisseton, SD 57262
(605) 698-7292
Genealogy
County-level record sources
Roberts County Clerk of Courts, Sisseton (probate/estate case files – see Probate section above).
Portions of Roberts County overlap the Lake Traverse Indian Reservation, home of the Sisseton-Wahpeton Oyate, which maintains its own tribal genealogical and vital records systems.
Local societies
No dedicated Roberts County genealogical society was confirmed in available directories.
Probate & Estate
Losing someone and having to deal with courts and paperwork at the same time is hard. This section won’t make that easier, but it should tell you what to expect, what it costs, and where to go – so at least you’re not walking in blind.
Where to go
Clerk of Courts, Roberts County 411 2nd Avenue East, Sisseton, SD 57262 (605) 698-7256
Roberts County is in the northeastern corner of South Dakota, seated in Sisseton. The county overlaps portions of the Lake Traverse Indian Reservation, home of the Sisseton-Wahpeton Oyate.
Step 1: figure out which path applies
South Dakota HAS adopted the Uniform Probate Code (Articles I, II, III, IV, and VIII, effective July 1, 1995). Probate proceedings are handled by the Circuit Court in the county where the decedent lived, generally administered under the supervision of the Clerk of Courts.
Small Estate Affidavit – Collection of Personal Property (SDCL § 29A-3-1201) – available when the total gross value of the entire estate, wherever located, less liens and encumbrances, does not exceed $50,000. At least 30 days must have passed since death, no petition for appointment of a personal representative is pending or has been granted anywhere, and the decedent had no outstanding debts to the Department of Social Services for medical assistance or institutional/nursing home care. A separate affidavit exists for South Dakota real estate under $50,000, which must also be filed with the Register of Deeds where the property sits.
Informal Probate – the most common track in South Dakota, used when heirs and beneficiaries are getting along and no disputes are expected.
Unsupervised Formal Probate and Supervised Formal Probate – for more complex or contested situations.
Step 2: filing for administration
The personal representative (or an interested party) files an application or petition with the Clerk of Courts in Roberts County, along with the original will if one exists.
For informal probate, the clerk reviews the application administratively and issues Letters Testamentary or Letters of Administration without a hearing in most cases.
Formal proceedings require notice to interested parties and, if contested, a hearing before the circuit judge.
The personal representative gathers and inventories assets, notifies creditors, and pays valid debts and expenses.
After debts and taxes are satisfied, remaining assets are distributed according to the will or South Dakota’s intestacy statutes (SDCL Chapter 29A-2).
The estate is formally closed by filing a sworn closing statement or a petition for formal order of discharge (SDCL § 29A-3-1003).
What it costs
Court costs are set by law and paid to the Clerk of Courts; confirm current fees with Roberts County directly.
South Dakota has NO state estate tax and NO state inheritance tax. Only the federal estate tax may apply, and only to very large estates.
A surviving spouse cannot be disinherited in South Dakota unless the spouse agrees.
Probate filings, estate administration, and guardianship matters are handled by the following office(s):
Public Safety & Arrests
Arrest records, inmate search, and law enforcement services are handled by the following office(s):
SHERIFF
411 2nd Ave East, Sisseton, SD 57262
(605) 698-7686
Elections & Voting
Voter registration, polling locations, and elections information are handled by the following office(s):
AUDITOR (ELECTIONS)
411 2nd Ave East, Sisseton, SD 57262
(605) 698-7616
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
Public Health
411 2nd Ave East, Sisseton, SD 57262
(605) 698-7616
Social Services
411 2nd Ave East, Sisseton, SD 57262
(605) 698-7616
Public Health Information
PUBLIC HEALTH
Office: Roberts County Community Health Representative – 7 E Chestnut St, Sisseton, SD
Related: Coteau Health Care System Hospital – 205 Orchard Dr, Sisseton, SD, (605) 698-7647.
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Last verified June 2026
County Facts
County Seat: Sisseton
Population: 10,000
Established: 1883
Tier: 3
Public Records
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