County · code 46109
Roberts CountySouth Dakota
Roberts County is in South Dakota with its county seat in Sisseton. The county was founded in 1883 and became a county in the state of South Dakota in 1889.
- Founded1883
- County seatSisseton
- Land area1,101 sq mi + 35 sq mi water
- Population10,280 2020 Census
- Parcels mapped14,606 checked 16 October 2026
Where it is
Roberts on the map of South Dakota
South Dakota has 66 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Founded in 1883
An old deed may name a county that no longer exists, or a boundary that has since moved.
Roberts County lost territory to Richland County, North Dakota in 1885. Roberts became a county in the state of South Dakota on November 2, 1889.
- 1885Lost territory Roberts lost to Richland (North Dakota).to Richland (N. D.)· Dak. Terr. Laws 1885, 16th sess., ch. 34/p. 272
- 1889Became part of South Dakota Roberts became a county in the state of South Dakota. · U.S. Stat., vol. 25, ch. 180[1889]/pp. 676-684; U.S. Stat., vol. 26, no. 5/pp. 1548-1549; Swindler, 9:107-109; Van Zandt, 134
Land and parcels
What the maps cover in Roberts
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 14,606 parcels from Roberts County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026 -
Address points Missing
No public address points layer found for Roberts County yet.
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Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
Roberts by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
Who to ask before you build, dig or sell
Official county pages only. We link to them; we do not copy them, because they change.
Inside a city or town, permits usually come from that city rather than the county.
Zoning and code
County government
- County government
The official website of Roberts County.
See your own lot on these maps
Open Roberts County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about Roberts County
- When was Roberts County founded?
- Roberts County was founded in 1883.
- What is the county seat of Roberts County?
- The county seat of Roberts County is Sisseton.
- Is there an online parcel map for Roberts County?
- Yes. Roberts County publishes a parcel map of 14,606 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Roberts County's boundary or name changed?
- Atlas of Historical County Boundaries records 2 changes for Roberts County. Since then the Atlas of Historical County Boundaries records 2 later changes, chiefly involving Richland (N. D.) County.
- Is my lot in a flood zone?
- We do not have flood maps for Roberts County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby