Most Common Women's Shoe Size in the U.S.: Data and Context

According to a 2019 survey by the American Apparel & Footwear Association (AAFA), the most common women's shoe size in the United States is 8.5 (US sizing).

Ranking of Top Sizes

1. Size 8.5
2. Size 8
3. Size 9
4. Size 7.5

Context and Caveats

• Sizing inconsistency: US women's sizes vary significantly between brands (vanity sizing, last shape, country of manufacture). A "size 8.5" in one brand may fit like an 8 or 9 in another.
• Width matters: Standard (B), Wide (D), Extra Wide (2E/4E) change fit independently of length.
• Demographic shifts: Average foot size has increased over decades due to better nutrition, higher BMI, and aging population (feet spread with age/weight).
• Data age: 2019 survey; post-pandemic weight gain trends may have shifted distribution slightly upward.
• Global difference: UK/EU sizing differs. US 8.5 ≈ UK 6.5 ≈ EU 39.5.

Practical Takeaway

Size 8.5 is the modal (most frequent) size, but fit trumps number. Always try shoes on (or check brand-specific size charts with foot measurements). Many retailers now offer free returns for this reason.