County · South Dakota

Roberts County, South Dakota

Roberts County, South Dakota. Roberts County had 10,255 residents in 2025 by the Census Bureau's estimate, down 0.3% since 2020, while South Dakota grew 5.5%. It holds 44 places (10 cities, villages and boroughs, 30 towns and townships and 4 census-designated) and 4 census tracts. GEOID 46109.

Residents, July 2025 estimate

10,255

Census Bureau estimate (no margin published)
2020 Census count: 10,280 · ACS 2020-2024: 10,221

Median household income

$65,130

±$2,576 (90% margin)
South Dakota: $75,081

Median home value

$154,500

±$21,816 (90% margin)
South Dakota: $257,400

Median gross rent

$658

±$44 (90% margin)
South Dakota: $946

How many people live in Roberts County, and is it growing?

The 2020 Census counted 10,280 residents in Roberts County. The Census Bureau estimates 10,255 for July 1, 2025, down 0.3% since 2020, while South Dakota grew 5.5%. The 2020-2024 American Community Survey puts the population at 10,221 over 1,101 square miles of land.

July 2020→2021 −93 (10,173)
2021→2022 −30 (10,143)
2022→2023 +46 (10,189)
2023→2024 +89 (10,278)
2024→2025 −23 (10,255)

Roberts County in South Dakota. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	Roberts County	South Dakota	Change since 2015-2019
Total population	10,221	907,428	−66
Households	3,625±100	365,544	−248
Average household size	2.76±0.08	2.39	+0.16
Housing units	4,848±27	408,584	−200

Roberts County's population since 2000

From 10,016 in 2000 to 10,255 in 2025: up 2.4%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 10,016
2005 (estimate) 9,939
2010 Census 10,149
2015 (estimate) 10,210
2020 Census 10,280
2025 (estimate) 10,255

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Roberts County?

Roberts County holds 44 places: 10 cities, villages and boroughs (incorporated places), 30 towns and townships (county subdivisions with their own government) and 4 census-designated places. The largest is Sisseton with 2,413 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Roberts County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Sisseton	city	2,479	2,670±250	$48,875	$109,200	18.7%	100%
Goodwill Township	township	933	1,162±229	$53,750	$268,800	24.0%	100%
Agency Village	CDP	776	980±228	$50,625	$257,100	27.3%	100%
Sisseton Township, Roberts CountyGEOID 4610959300	township	761	573±198	$94,286	not published	4.4%	100%
Wilmot	city	432	381±84	$59,583	$78,300	12.5%	100%
Long Hollow TownshipGEOID 4610938780	township	416	291±130	$54,500	$193,200	24.7%	100%
Rosholt	town	379	428±74	$64,861	$116,400	13.0%	100%
Lockwood Township	township	341	314±77	$87,969	$348,300	22.0%	100%
Bryant Township, Roberts CountyGEOID 4610908100	township	312	152±63	$68,750	$283,300	6.6%	100%
Geneseo TownshipGEOID 4610924060	township	305	475±142	$147,188	$311,500	5.8%	100%
Agency TownshipGEOID 4610900500	township	297	128±62	not published	not published	16.4%	100%
Summit	town	288	359±91	$60,000	$98,100	14.5%	100%
Long HollowGEOID 4638760	CDP	265	128±111	not published	not published	56.3%	100%
Lake Township, Roberts CountyGEOID 4610934980	township	250	283±87	$76,339	$340,000	4.6%	100%
New Effington	town	234	269±63	$50,208	$68,000	20.7%	100%
Lawrence Township, Roberts CountyGEOID 4610936140	township	231	245±126	$60,375	$54,100	23.7%	100%
PeeverGEOID 4648940	town	180	145±69	$41,750	$38,600	42.1%	100%
Grant Township, Roberts CountyGEOID 4610925700	township	174	177±59	$105,417	not published	16.4%	100%
Victor Township, Roberts CountyGEOID 4610967180	township	164	244±79	$88,958	$271,900	1.6%	100%
Harmon TownshipGEOID 4610927020	township	157	248±97	$142,083	$191,700	0.0%	100%
White Rock TownshipGEOID 4610971420	township	155	117±43	$72,750	$265,000	7.7%	100%
Garfield Township, Roberts CountyGEOID 4610923700	township	136	83±34	$70,179	$340,000	0.0%	100%
Peever FlatsGEOID 4648948	CDP	129	119±81	$60,375	not published	9.2%	100%
Easter TownshipGEOID 4610917780	township	128	43±35	$80,662	not published	0.0%	100%
Spring Grove TownshipGEOID 4610960740	township	123	150±98	$28,654	$10,000 or less	68.0%	100%
Lien TownshipGEOID 4610937100	township	120	188±91	$103,542	not published	11.7%	100%
Enterprise Township, Roberts CountyGEOID 4610919780	township	118	55±35	$66,838	$97,500	0.0%	100%
Ortley TownshipGEOID 4610947700	township	108	113±56	$81,641	$431,300	0.0%	100%
Hart TownshipGEOID 4610927500	township	108	50±42	not published	not published	4.0%	100%
Dry Wood Lake TownshipGEOID 4610917140	township	99	40±32	$97,083	not published	0.0%	100%
Springdale Township, Roberts CountyGEOID 4610960620	township	98	104±56	$72,083	not published	0.0%	100%
Minnesota TownshipGEOID 4610942820	township	96	129±90	not published	not published	0.0%	100%
Becker TownshipGEOID 4610904220	township	96	118±48	$102,344	$282,500	0.0%	100%
Norway Township, Roberts CountyGEOID 4610945940	township	93	61±42	not published	$65,400	0.0%	100%
Lee TownshipGEOID 4610936300	township	92	47±26	$36,635	not published	0.0%	100%
Claire CityGEOID 4612020	town	82	107±41	$62,500	$77,100	15.9%	100%
CoronaGEOID 4613940	town	69	87±58	$65,000	$85,000	0.0%	100%
One Road TownshipGEOID 4610947140	township	61	8±13	not published	not published	0.0%	100%
Alto TownshipGEOID 4610901220	township	53	34±27	$56,250	$310,000	29.4%	100%
OrtleyGEOID 4647660	town	50	73±31	$31,806	$44,200	47.9%	100%
Bossko TownshipGEOID 4610906420	township	28	31±23	not published	not published	35.5%	100%
Summit Township, Roberts CountyGEOID 4610962260	township	28	27±21	not published	$316,700	11.1%	100%
White RockGEOID 4671380	town	6	12±10	$43,750	not published	58.3%	100%
White Rock ColonyGEOID 4671440	CDP	0	0±10	not published	not published	–	100%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Roberts County?

The median resident of Roberts County is 38.5 years old; 28.2% are under 18 and 20.9% are 65 or older. The largest group is non-Hispanic white residents at 56.5%, then non-Hispanic American Indian and Alaska Native residents at 34.5%. 1.2% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	Roberts County	South Dakota	Change since 2015-2019
Median age	38.5±0.5	38.0	no clear change
Under 18 years	28.2%±0.2 pts	24.2%	–
65 years and over	20.9%±0.2 pts	18.0%	–
Hispanic or Latino (any race)	2.6%	4.8%	−0.9 pts
White alone, not Hispanic	56.5%±0.3 pts	79.8%	no clear change
Black or African American alone, not Hispanic	0.3%±0.2 pts	2.1%	–
Asian alone, not Hispanic	0.8%±0.1 pts	1.4%	–
American Indian and Alaska Native alone, not Hispanic	34.5%±1.3 pts	7.1%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.0%±0.2 pts	0.0%	–
Two or more races, not Hispanic	5.2%±1.4 pts	4.4%	–
Some other race alone, not Hispanic	0.1%±0.2 pts	0.3%	–
Born outside the United States	1.2%±0.3 pts	4.0%	no clear change
Speak a language other than English at home (age 5+)	5.3%±1.8 pts	7.1%	–
Civilian veterans (age 18+)	7.7%±1.1 pts	7.9%	–
With a disability	10.4%±1.3 pts	12.5%	–
No health insurance coverage	18.2%±1.9 pts	9.0%	no clear change
High school graduate or higher (age 25+)	91.5%±1.4 pts	93.2%	–
Bachelor's degree or higher (age 25+)	18.6%±2.2 pts	31.9%	no clear change
Graduate or professional degree (age 25+)	5.2%±1.1 pts	10.0%	–
Moved from another state in the past year	1.4%±0.6 pts	3.2%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Roberts County earn?

Half of Roberts County's 3,625 households earn less than $65,130 a year (±$2,576), against $75,081 in South Dakota. In 2015-2019 it was $61,963 in 2024 dollars; the margins of error cannot tell the two periods apart. 15.7% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	Roberts County	South Dakota	Change since 2015-2019
Median household income	$65,130±$2,576	$75,081	no clear change
Mean household income	$83,087±$3,630	$98,527	–
Per capita income	$32,107±$1,457	$40,550	no clear change
People below the poverty line	15.7%±2.5 pts	11.9%	−4.4 pts
Children under 18 below the poverty line	20.7%±5.0 pts	14.3%	−12.8 pts
Households receiving SNAP	10.6%±1.3 pts	7.9%	–
Households with a broadband subscription	83.3%±2.3 pts	89.6%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Roberts County?

Owners occupy 71.2% of Roberts County's occupied homes and renters 28.8%. The median owner-occupied home is valued at $154,500 by its owner (±$21,816). The median renter pays $658 a month including utilities, and 20.8% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	Roberts County	South Dakota	Change since 2015-2019
Median home value (owner-occupied)	$154,500±$21,816	$257,400	+$27,000
Median gross rent	$658±$44	$946	−$59
Renters paying 35% or more of income on rent	20.8%±5.2 pts	30.4%	−10.9 pts
Median monthly owner costs, with a mortgage	$1,567±$74	$1,680	–
Owner-occupied homes	71.2%±2.7 pts	68.6%	+4.7 pts
Housing units	4,848±27	408,584	−200
Homeowner vacancy rate	0.4%±0.4 pts	0.8%	–
Rental vacancy rate	10.5%±3.8 pts	6.0%	–
Single-family detached homes	80.0%±2.2 pts	66.9%	–
Mobile homes	11.6%±2.0 pts	7.2%	–
Built 2020 or later	0.7%±0.4 pts	2.3%	–
Built 1939 or earlier	22.2%±1.9 pts	15.8%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Roberts County building?

Builders took permits for 29 new housing units across Roberts County in 2025 (29 single-family), 2.8 per 1,000 residents.

2019 31 units
2020 36 units
2021 41 units
2022 18 units
2023 16 units
2024 23 units
2025 29 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Roberts County get to work?

75.3% of Roberts County's workers drive alone and 9.0% work from home. The average trip to work takes 16.2 minutes. The unemployment rate in 2020-2024 averaged 6.0%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	Roberts County	South Dakota	Change since 2015-2019
In the labor force (age 16+)	60.2%±2.1 pts	67.2%	–
Unemployment rate	6.0%±1.7 pts	2.9%	no clear change
Drove alone to work	75.3%±3.1 pts	77.0%	–
Carpooled	8.1%±2.1 pts	8.3%	–
Public transportation	1.1%±0.7 pts	0.5%	–
Walked	4.2%±1.3 pts	3.1%	–
Worked from home	9.0%±1.9 pts	9.7%	+3.9 pts
Mean travel time to work	16.2 min±1.1	17.8 min	no clear change

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Roberts County's census tracts?

Roberts County is divided into 4 census tracts. Among those with a reliable estimate, median household income runs from $48,425 (Tract 9404) to $81,307 (Tract 9504).

Census tracts of Roberts County, ACS 2020-2024 5-year estimates; sort by any column

Tract 940446109940400	Sisseton (77%)	3,099	3,056±267	$48,425	$108,000	$622	17.5%
Tract 940746109940700	Rosholt (6%)	2,521	2,506±204	$79,917	$120,400	$806	10.5%
Tract 940846109940800	Summit (7%)	2,861	2,771±236	$61,700	$200,700	$668	23.5%
Tract 950446109950400	Wilmot (13%)	1,799	1,888±156	$81,307	$222,100	$713	8.3%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Roberts County compare with South Dakota's other counties?

Roberts County's rank among South Dakota's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	18th of 66
Growth 2020-2025	43rd of 66
Residents per square mile	21st of 66
Median household income	49th of 66
Median home value	43rd of 66
Median gross rent	49th of 65
Poverty rate	17th of 65
Bachelor's degree or higher	58th of 66
Median age	45th of 66

Every county in South Dakota

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Roberts County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.