Largest and most widespread series

By mapped acres

1. 1ValentineEntisols · 10,802,220 acres · 1st nationally10.8 M
2. 2GilpinUltisols · 5,835,549 acres · 2nd nationally5.8 M
3. 3SmithdaleUltisols · 5,681,521 acres · 3rd nationally5.7 M
4. 4CecilUltisols · 5,485,416 acres · 4th nationally5.5 M
5. 5WilliamsMollisols · 4,232,753 acres · 5th nationally4.2 M
6. 6EctorMollisols · 4,014,662 acres · 6th nationally4.0 M
7. 7HarneyMollisols · 3,889,386 acres · 7th nationally3.9 M
8. 8SharkeyVertisols · 3,651,582 acres · 8th nationally3.7 M
9. 9ValentEntisols · 3,525,118 acres · 9th nationally3.5 M
10. 10BerksInceptisols · 3,241,125 acres · 10th nationally3.2 M
11. 11PacoletUltisols · 3,139,465 acres · 11th nationally3.1 M
12. 12PullmanMollisols · 3,074,689 acres · 12th nationally3.1 M
13. 13AmarilloAlfisols · 3,044,539 acres · 13th nationally3.0 M
14. 14TarrantMollisols · 2,936,422 acres · 14th nationally2.9 M
15. 15UlyssesMollisols · 2,812,965 acres · 15th nationally2.8 M
16. 16UlyMollisols · 2,808,719 acres · 16th nationally2.8 M
17. 17ClarksvilleUltisols · 2,802,758 acres · 17th nationally2.8 M
18. 18HoldregeMollisols · 2,786,821 acres · 18th nationally2.8 M
19. 19KeithMollisols · 2,760,253 acres · 19th nationally2.8 M
20. 20CabbartEntisols · 2,680,209 acres · 20th nationally2.7 M
21. 21BlountAlfisols · 2,582,525 acres · 21st nationally2.6 M
22. 22RichfieldMollisols · 2,581,668 acres · 22nd nationally2.6 M
23. 23MadisonUltisols · 2,513,001 acres · 23rd nationally2.5 M
24. 24SheloctaUltisols · 2,312,863 acres · 24th nationally2.3 M
25. 25BibbEntisols · 2,303,319 acres · 25th nationally2.3 M