† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
1 counties by 2024 margin · County returns · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupSpearfish, SDSouth DakotaUnited States
German32.0%33.1%12.5%
Irish13.0%9.9%9.4%
English12.0%7.7%9.5%
Norwegian8.6%10.4%—
American5.6%4.4%5.3%
Swedish4.0%2.5%—
Dutch2.2%3.4%—
Russian2.2%——
Mexican2.8%2.6%11.3%
Puerto Rican0.3%0.4%1.8%
Cuban0.2%—0.7%
Oglala Sioux0.5%2.0%—
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
Spearfish, SD
South Dakota
United States
Median age
44.8
38.2
39.1
Age 18–24
10.9%
9.2%
9.2%
Age 65 and older
25.1%
18.0%
17.2%
Household economy
Measure
Spearfish, SD
South Dakota
United States
Median household income
$73,384
$75,081
$84,427
Poverty rate
11.6%
12.0%
12.5%
Bachelor's degree or higher (25+)
32.9%
31.9%
35.6%
Languages at home
Measure
Spearfish, SD
South Dakota
United States
Speaks a non-English language at home
4.7%
7.1%
22.3%
Spanish
2.0%
2.6%
13.6%
Religious landscape
Measure
Spearfish, SD
South Dakota
United States
Catholic
9.2%
14.8%
18.6%
Evangelical Protestant
19.4%
20.1%
16.5%
Unclaimed / not counted
60.4%
44.9%
51.5%
Mainline Protestant
10.3%
18.0%
5.2%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Spearfish, SD
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
1892
−38.1%
1896
+13.5%
1900
−13.3%
1904
−44.7%
1908
−21.8%
1912
+53.9%
1916
+1.9%
1920
−40.9%
1924
−56.9%
1928
−39.6%
1932
−8.8%
1936
−13.2%
1940
−20.1%
1944
−30.8%
1948
−26.0%
1952
−53.1%
1956
−42.7%
1960
−32.1%
1964
−3.8%
1968
−25.3%
1972
−30.8%
1976
−14.8%
1980
−36.3%
1984
−39.5%
1988
−19.9%
1992
−6.3%
1996
−9.1%
2000
−37.5%
2004
−31.3%
2008
−15.4%
2012
−26.9%
2016
−34.2%
2020
−30.5%
2024
−31.3%
DemocraticRepublican
34 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
32.9%Harris5,074
64.3%Trump9,904
2.8%
R+31.3
R+0.9
R+29.9
15,409
R
32.8%Biden4,537
63.3%Trump8,753
3.9%
R+30.5
D+3.8
R+34.9
13,828
R
28.3%Clinton3,356
62.6%Trump7,411
9.1%
R+34.2
R+7.4
R+36.3
11,842
R
35.0%Obama3,973
61.8%Romney7,025
3.2%
R+26.9
R+11.5
R+30.7
11,359
R
40.9%Obama4,932
56.3%McCain6,787
2.8%
R+15.4
D+15.9
R+22.7
12,055
R
33.2%Kerry3,857
64.5%Bush7,489
2.3%
R+31.3
D+6.3
R+28.8
11,619
R
29.7%Gore2,797
67.3%Bush6,327
3.0%
R+37.5
R+28.4
R+38.0
9,406
R
37.8%Clinton3,568
46.9%Dole4,430
15.3%
R+9.1
R+2.8
R+17.7
9,442
R
32.7%Clinton3,157
39.0%Bush3,770
28.3%
R+6.3
D+13.5
R+11.9
9,659
R
39.5%Dukakis3,705
59.4%Bush5,570
1.1%
R+19.9
D+19.6
R+12.2
9,379
R
29.9%Mondale2,565
69.4%Reagan5,949
0.6%
R+39.5
R+3.2
R+21.3
8,569
R
26.9%Carter2,259
63.1%Reagan5,306
10.0%
R+36.3
R+21.4
R+26.5
8,403
R
41.6%Carter3,102
56.5%Ford4,206
1.9%
R+14.8
D+15.9
R+16.9
7,449
R
34.5%McGovern2,533
65.2%Nixon4,795
0.3%
R+30.8
R+5.4
R+7.6
7,352
R
34.9%Humphrey2,425
60.2%Nixon4,185
4.9%
R+25.3
R+21.5
R+24.6
6,948
R
48.1%Johnson3,468
51.9%Goldwater3,743
0.0%
R+3.8
D+28.3
R+26.4
7,211
R
33.9%Kennedy2,612
66.1%Nixon5,083
0.0%
R+32.1
D+10.5
R+32.3
7,695
R
28.7%Stevenson1,871
71.3%Eisenhower4,654
0.0%
R+42.7
D+10.5
R+27.2
6,525
R
23.4%Stevenson1,701
76.6%Eisenhower5,559
0.0%
R+53.1
R+27.2
R+42.4
7,260
R
36.5%Truman2,209
62.5%Dewey3,778
1.0%
R+26.0
D+4.9
R+30.4
6,045
R
34.6%Roosevelt1,866
65.4%Dewey3,528
0.0%
R+30.8
R+10.7
R+38.3
5,394
R
39.9%Roosevelt3,515
60.1%Willkie5,288
0.0%
R+20.1
R+7.0
R+30.1
8,803
R
43.0%Roosevelt3,809
56.2%Landon4,974
0.8%
R+13.2
R+4.4
R+37.4
8,852
R
45.2%Roosevelt3,106
54.0%Hoover3,708
0.8%
R+8.8
D+30.9
R+26.6
6,868
R
30.0%Smith1,785
69.6%Hoover4,141
0.4%
R+39.6
D+17.3
R+22.2
5,947
R
14.2%Davis649
71.1%Coolidge3,255
14.8%
R+56.9
R+15.9
R+31.7
4,580
R
27.6%Cox1,201
68.5%Harding2,986
3.9%
R+40.9
R+42.9
R+14.8
4,359
D
49.4%Wilson2,157
47.5%Hughes2,074
3.1%
D+1.9
R+52.0
R+1.2
4,365
D
53.9%Wilson2,412
0.0%Taft0
46.1%
D+53.9
D+75.7
D+34.4
4,471
R
29.1%Bryan1,564
50.9%Taft2,735
20.0%
R+21.8
D+23.0
R+12.2
5,377
R
20.8%Parker1,347
65.5%Roosevelt4,247
13.7%
R+44.7
R+31.5
R+25.1
6,481
R
42.7%Bryan2,619
56.0%McKinley3,435
1.4%
R+13.3
R+26.8
R+5.7
6,138
D
56.4%Bryan2,905
42.9%McKinley2,210
0.7%
D+13.5
D+51.6
D+19.6
5,150
R
13.1%Cleveland546
51.2%Harrison2,140
35.8%
R+38.1
—
R+39.8
4,181
Congressional elections · 2 Senate races
U.S. Senate
Source · MIT Election Lab (MEDSL), Senate. CC-BY 4.0.
Year
Won
Democratic
Republican
Total
2022
R
25.2%3,061
69.5%8,439
12,146
2020
R
31.7%4,358
68.3%9,385
13,743
voter registration
Registered voters
By party of registration, over time
Party registration · 2026R+39.6
vs
Presidential vote · 2024R+31.3
Registration leans Republican; the presidential vote runs 8.3 points more Republican.
Domestic migration in Spearfish, SD in Spearfish, SD: net domestic migration by year
Year
Net domestic migration
2011
+99
2012
+70
2013
+546
2014
−241
2015
+89
2016
+371
2017
+236
2018
+48
2019
+110
2021
+396
2022
+1,036
2023
+813
2024
+669
2025
+786
Spearfish anchors the northern Black Hills micro-economy, where Black Hills State University enrollment and I-90 corridor growth have pushed Lawrence County population gains above state averages for two consecutive census cycles.
Across the recorded series it reached a Democratic high of 53.9 points in 1912 and a Republican high of 56.9 points in 1924. Between 2020 and 2024 the metro moved 0.9 points toward the Republican candidate; the 2024 margin was 31.3 points.
A population of 27,233, a 89% non-Hispanic-white share, and a median household income of $73,384 describe the metro. The metro's voting pattern over the last decade is most similar to that of Rapid City, SD and Pierre, SD.
Akashic
Political twins — metros
The metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Spearfish, SD, South Dakota. Akashic. https://akashic.app/cbsa/43940/. Accessed May 20, 2026. License: CC BY 4.0.
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In 2024, Spearfish, SD, South Dakota voted Republican by 31.3 points (R+31.3), carried by the Republican candidate. Out of 15,409 votes cast, 5,074 went Democratic and 9,904 went Republican.
When did Spearfish, SD, South Dakota last vote Democratic?
The most recent presidential election in which Spearfish, SD, South Dakota voted Democratic was 1916.
How many people live in Spearfish, SD, South Dakota?
Spearfish, SD, South Dakota has a population of 27,233 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Spearfish, SD, South Dakota?
Median household income in Spearfish, SD, South Dakota is $73,384 — below the national median of $80,734. The South Dakota state median is $75,081.
What is the political history of Spearfish, SD, South Dakota?
Akashic tracks 34 presidential elections in Spearfish, SD, South Dakota from 1892 to 2024. Of those, 3 went Democratic and 31 went Republican.
