A population ("pop") report is a grading company's public count of how many copies of a specific card they've graded at each grade level. It tells you roughly how scarce a card is in, say, Gem Mint 10 — a low pop at the top grade signals genuine rarity and often supports a premium, while a huge population means Gem Mint copies are plentiful and cheaper. Collectors use pop reports to gauge scarcity, spot undervalued grades, and understand a card's market. Keep in mind pops only count graded cards (not raw copies) and grow over time as more are submitted. Combine pop data with recent sold comps for the fullest picture before buying or selling.
Updated Jul 13, 2026