Lake Traverse Reservation and Off-Reservation Trust Land
Lake Traverse Reservation and Off-Reservation Trust Land is a federal reservation with off-reservation trust land in Roberts County, Marshall County, Day County and 2 more counties, South Dakota; and Sargent County and Richland County, North Dakota, as the Census Bureau maps it. About 11,084 people live there (2020–2024 estimate). It covers 1,449 sq mi (3,754 km²) of land.
- Population, 2020–2024 estimate
- 11,084 ± 314
- What it is
- Federal reservation · Off-reservation trust land
- Counties
- Roberts County, SD60% of its landMarshall County, SD16% of its landDay County, SD7% of its landGrant County, SD6% of its landSargent County, ND4% of its landCodington County, SD4% of its landRichland County, ND3% of its land
- Land area
- 1,449 sq mi (3,754 km²)
- Median household income
- $64,666 ± $2,326
- Median home value
- $142,100 ± $14,819
- Water area
- 59.3 sq mi (154 km²)
- States
- South Dakota, North Dakota
- Census code
- 1860
- Coordinates (central point)
- 45.643635, -97.092371
These coordinates mark a central point for the area, not an address. Population, income and home value: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 20, 2026.
Communities in this area, largest first
- Sisseton (city)2,670 people
- Agency Village (CDP)980 people
- Veblen (city)455 people
- Rosholt (town)428 people
- Summit (town)359 people
- Enemy Swim (CDP)301 people
- New Effington (town)269 people
- Peever (town)145 people
- Long Hollow (CDP)128 people
- Peever Flats (CDP)119 people
- Claire City (town)107 people
- Ortley (town)73 people
All 15
- Clear Lake (CDP)41 people
- Lake City (town)40 people
- White Rock Colony (CDP)0 people
These places’ central points lie inside the area. People counts are American Community Survey 2020–2024 5-year estimates.
Before using this answer
These Census boundaries don’t decide tribal membership, jurisdiction or land status, and they aren’t a land acknowledgment. For services, enrollment or jurisdiction, ask the tribal government.