Here's the total score for Adventures. 34 out of the 50 cards show people. (Counting each set of 5 Traveller cards as one card for these purposes.)
ADVENTURES
Male: Alms, Borrow, Bridge Troll, Duplicate, Ferry, Giant, Hireling, Miser, Pathfinding, Peasant/Soldier/Fugitive/Disciple/Teacher, Quest, Ratcatcher, Raze, Training, Transmogrify, Travelling Fair, Wine Merchant
Female: Artificer, Caravan Guard, Guide, Lost Arts, Messenger, Page/Treasure Hunter/Warrior/Hero/Champion, Ranger, Save, Storyteller, Swamp Hag
Both: Ball, Bonfire, Pilgrimage, Plan(?), Royal Carriage, Scouting Party
Unknown: Raid
Percentage of female cards: 39.4%
Most of the female cards had been previewed already when I last did the count, so we have a more traditional (for Dominion) distribution than it seemed then. It's a higher percentage of female cards than most other sets, but not close to Cornucopia's 61.7%. Adventures does have the highest number of female cards though (13).
This changes the total Dominion score to:
MALE: 127.1 = 74.7%
FEMALE: 42.9 = 25.3%
UNKNOWN: 9
EDIT 2015-04-28: Changed Royal Carriage to "both", and Raid to "Unknown".
EDIT 2015-05-04: Added Expand (from Prosperity) as a female card, changing the total slightly.