- Deuel County population: 4,354
- Hamlin County population: 6,451
- Social connectedness index: 11,432,841

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

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

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

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

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

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

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

- Gregory County population: 4,018
- Tripp County population: 5,621
- Social connectedness index: 27,649,946

- Hughes County population: 17,624
- Stanley County population: 3,043
- Social connectedness index: 29,750,951

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

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

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

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

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

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

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

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

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

- 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.