#1. Alice Walton - Net worth: $69.7 billion - Rank in world: #18 - Source of wealth: Walmart - Age: 72

#2. Julia Koch & family - Net worth: $62.9 billion - Rank in world: #21 - Source of wealth: Koch Industries - Age: 60

#3. MacKenzie Scott - Net worth: $45.2 billion - Rank in world: #29 - Source of wealth: Amazon - Age: 52

#4. Jacqueline Mar - Net worth: $34.6 billion - Rank in world: #38 - Source of wealth: candy, pet food - Age: 82

#5. Miriam Adelson - Net worth: $26.9 billion - Rank in world: #53 - Source of wealth: casinos - Age: 76

#6. Abigail Johnson - Net worth: $21.9 billion - Rank in world: #74 - Source of wealth: money management - Age: 60

#7. Laurene Powell Jobs & family - Net worth: $17.1 billion - Rank in world: #107 - Source of wealth: Apple, Disney - Age: 58

#8. Diane Hendrick - Net worth: $11.0 billion - Rank in world: #185 - Source of wealth: roofing - Age: 75

#9. Ann Walton Kroenke - Net worth: $9.5 billion - Rank in world: #218 - Source of wealth: Walmart - Age: 73

#10. Pauline MacMillan Keinath - Net worth: $9.4 billion - Rank in world: #220 - Source of wealth: Cargill - Age: 88