
Jacob Boomsma // Shutterstock
1 / 20#20. Deuel County and Hamlin County
- Deuel County population: 4,354
- Hamlin County population: 6,451
- Social connectedness index: 11,432,841

In today's digital age, social media platforms enable people to bridge geographic distances and connect with their friends, family, and community, no matter where they are. According to a 2022 Gallup and Meta study, at least 1 in 3 people across seven countries, including the U.S., said they used social media to interact with others at least once a day in the past week.
While social media has its drawbacks—such as pulling attention away from other tasks or fostering a problematic comparison culture—it remains a vital tool for helping people stay connected.
A majority of students in grades 3 to 12 said social media helped them develop relationships, learn social skills, and make a positive impact in their community, according to a 2024 report from The Social Institute.
Spokeo compiled a ranking of the most socially connected counties in South Dakota using 2021 data from Facebook, based on a national analysis. County pairs were ranked by their social connectedness index, which measures the relative probability that two individuals across two locations are friends with each other on Facebook. The social connectedness index is a scaled value up to a billion. Larger indexes indicate a greater share of Facebook friends between county pairs.

Jacob Boomsma // Shutterstock
1 / 20- Deuel County population: 4,354
- Hamlin County population: 6,451
- Social connectedness index: 11,432,841

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2 / 20- Hutchinson County population: 7,394
- Bon Homme County population: 7,065
- Social connectedness index: 12,147,370

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3 / 20- Butte County population: 10,863
- Harding County population: 1,324
- Social connectedness index: 15,929,789

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4 / 20- Lake County population: 11,031
- Miner County population: 2,280
- Social connectedness index: 16,279,079

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5 / 20- Marshall County population: 4,390
- Day County population: 5,451
- Social connectedness index: 17,245,868

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6 / 20- Bennett County population: 3,305
- Oglala Lakota County population: 13,434
- Social connectedness index: 18,037,301

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7 / 20- Davison County population: 19,922
- Hanson County population: 3,471
- Social connectedness index: 19,938,350

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8 / 20- Faulk County population: 2,151
- Spink County population: 6,166
- Social connectedness index: 22,195,803

Jacob Boomsma // Shutterstock
9 / 20- Gregory County population: 4,018
- Tripp County population: 5,621
- Social connectedness index: 27,649,946
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10 / 20- Hughes County population: 17,624
- Stanley County population: 3,043
- Social connectedness index: 29,750,951

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11 / 20- McPherson County population: 2,334
- Edmunds County population: 4,057
- Social connectedness index: 29,816,841

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12 / 20- Douglas County population: 2,838
- Aurora County population: 2,782
- Social connectedness index: 30,643,129

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13 / 20- Campbell County population: 1,340
- Walworth County population: 5,269
- Social connectedness index: 40,004,595

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14 / 20- Buffalo County population: 1,884
- Lyman County population: 3,705
- Social connectedness index: 55,367,123

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15 / 20- Ziebach County population: 2,322
- Dewey County population: 5,208
- Social connectedness index: 55,659,157

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16 / 20- Jones County population: 855
- Mellette County population: 1,851
- Social connectedness index: 58,396,289

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17 / 20- Sully County population: 1,494
- Potter County population: 2,413
- Social connectedness index: 58,545,849

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18 / 20- Jackson County population: 2,776
- Haakon County population: 1,851
- Social connectedness index: 59,980,007

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19 / 20- Jerauld County population: 1,660
- Sanborn County population: 2,399
- Social connectedness index: 61,194,868

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20 / 20- Hand County population: 3,107
- Hyde County population: 1,186
- Social connectedness index: 69,326,387
This story features data reporting by Karim Noorani, writing by Kayla Zhu, and is part of a series utilizing data automation across 46 states.