Sully County, South Dakota

2024 results by precinct

26 precincts · 901 votes cast

Trump · R+61

Harris +50

Trump +50

Hover precincts for detail. Real precinct boundaries forthcoming.

38 presidential elections

Year	Won	Margin	Democratic	Republican	Total
2024	R	−60.8%	168	716	901
2020	R	−58.2%	185	726	930
2016	R	−63.0%	137	679	861
2012	R	−52.2%	186	613	818
2008	R	−41.8%	233	581	833
2004	R	−54.6%	201	702	917
2000	D	+48.7%	633	209	871
1996	R	−26.4%	321	592	1,025
1992	R	−28.9%	273	565	1,010
1988	R	−17.7%	393	571	1,006
1984	R	−51.5%	266	836	1,107
1980	R	−55.0%	220	852	1,149
1976	R	−11.0%	505	630	1,139
1972	R	−30.1%	414	773	1,191
1968	R	−28.4%	356	676	1,125
1964	R	−5.6%	596	667	1,263
1960	R	−28.3%	483	864	1,347
1956	R	−19.0%	494	726	1,220
1952	R	−41.9%	352	860	1,212
1948	R	−17.5%	405	579	992
1944	R	−34.2%	300	612	912
1940	R	−29.4%	458	840	1,298
1936	R	−20.2%	437	667	1,138
1932	D	+25.6%	961	559	1,569
1928	R	−41.2%	415	999	1,417
1924	R	−44.4%	138	555	940
1920	R	−45.9%	147	542	861
1916	D	+2.3%	281	268	557
1912	D	+42.3%	242	0	572
1908	R	−39.7%	154	368	539
1904	R	−71.5%	50	364	439
1900	R	−31.3%	152	294	454
1896	R	−13.8%	198	262	465
1892	R	−49.4%	39	278	484
1888	—	No data	—	—	—
1884	—	No data	—	—	—
1880	—	No data	—	—	—
1876	—	No data	—	—	—

Demographics

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

American

100.0%

Polish

3.8%

African American

3.6%

Multiple ancestry combinations reported; no single grouping above 1%.

Sample size too small to break out by ancestry reliably.

American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.

Source · American Community Survey 5-year estimates, 2024 release. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.

Age distribution by sex

Median age: 46.9 in this county, 39.1 nationally

Male

Age

Female

0.4%

85+

0.8%

4.5%

75–84

3.0%

7.9%

65–74

6.5%

8.8%

55–64

7.6%

7.5%

45–54

6.7%

3.9%

35–44

3.5%

6.6%

25–34

3.6%

5.0%

18–24

1.6%

8.8%

5–17

9.4%

1.6%

2.1%

Source · American Community Survey 5-year estimates, 2024 release.

Median household income

2024 inflation-adjusted dollars

$72,578

Sully County ranks near the middle of US counties.

Sully County$72,578

South Dakota$75,081

United States$80,734

Source · American Community Survey 5-year estimates, 2024 release.

Poverty rate

All persons below federal poverty line

6.3%

Child poverty is below the national average.

Children under 180.0%

Working age (18–64)100.0%

Seniors (65+)18.0%

Source · American Community Survey 5-year estimates, 2024 release.

Language at home

Population aged 5 and older

0.0%

speak English only

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Mainline Protestant

21.7%

Catholic & Orthodox

16.6%

Methodist

5.7%

Non-Christian

0.1%

Source · 2020 US Religion Census. Remaining 55.9% of residents not counted as adherents by any reporting body.

Sully County's roughly 1,500 residents are spread across nearly 1,000 square miles of Missouri River plateau, and its presidential margins have exceeded R+50 in every cycle since at least 2000.

The unraveling was not abrupt. The Democratic margin in Sully County peaked at forty-nine points in 2000; it narrowed steadily over the late twentieth century. The 2004 election delivered the county to the Republican party for the first time in many years, by a margin of fifty-five points. By 2024, the margin had widened further.

The economic and demographic context is severe. Sully County's median household income of $72,578 is among the lowest of any county in the United States; 6% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Stanley County and Jones County.

Most similar counties

Sully County changed its political identity.