By total listing volume:
17,806: Silk Road (33.03%)
11,890: Agora (22.05%)
9,104: Evolution (16.89%)
7,840: Pandora (14.54%)
1,496: Blue Sky (2.77%)
1,373: Cloud-Nine (2.55%)
881: Hydra (1.63%)
612: Outlaw (1.14%)
585: Andromeda (1.09%)
357: Pirate (0.66%)
333: Silkkitie (0.62%)
326: The Marketplace (0.61%)
311: BlackBank (0.58%)
307: Tor Bazaar (0.57%)
298: Cannabis Road (0.55%)
197: Dream (0.37%)
61: Majestic Garden (0.11%)
51: Underground (0.10%)
49: Alpaca (0.09%)
22: 1776 (0.04%)
8: Tortuga (0.02%)
6: AdMagz (0.01%)
4: Silk Street (0.01%)
0: TOM/The Onion Market (0.00%)
N/A: Onionshop (Market not yet open.)
N/A: Topix 2 (Requires invite.)
N/A: Mr. Nice Guy (Down.)
Total of totals: 53,917.
(Figures accurate at time of writing. Sites provided by DeepDot.)
Great info! did you count each market or did you manage to scrape all of them?