There is something called KH database on this site but here ya go anyway.
Numbers Location
1, 2, 3 Traverse Town, island across from the Mystical House. Need Mermaid Kick and Glide ability
4, 5, 6 Traverse Town, Alleyway. Use red Trinity Mark
7, 8, 9 Traverse Town, Item Workshop. Use green Trinity Mark
10, 11, 12 Traverse Town, Secret Waterway. Use red Trinity Mark
13, 14, 15 Wonderland, Queens Castle
16, 17, 18 Wonderland, Lotus Forest
19, 20, 21 Wonderland, Tea Party Garden. Need High Jump and Glude abilities
22, 23, 24 Coliseum, Gates, near the statue on the right. Use blue Trinity Mark
25, 26, 27 Deep Jungle, Hippos' Lagoon
28, 29, 30 Deep Jungle, Vines 2
31, 32, 33 Deep Jungle, Climbing Trees. Use blue Trinity Mark
34, 35, 36 Deep Jungle, Cap. Use blue Trinity Mark
37, 38, 39 Agrabah, Aladdin's House
40, 41, 42 Halloween Town, Bridge
43, 44, 45 Neverland, Clock Tower
46, 47, 48 Agrabah, Palace Gates
49, 50, 51 Agrabah, Cave of Wonders, Entrance. Need High Jump and Glide abilities
52, 53, 54 Agrabah, Treasure Room
55, 56, 57 Monstro, Chamber 3
58, 59, 60 Wonderland, Queen's Castle
61, 62, 63 Hollow Bastion, Grand Hall (second trip to Hollow Bastion)
64, 65, 66 Halloween Town, Cemetery (hidden until after defeating Oogie Boogie)
67, 68, 69 Halloween Town, Guillotine Square, below Jack's house
70, 71, 72 Halloween Town, Guillotine Square, gray pumpkin. Need Glide ability
73, 74, 75 Monstro, Mouth, after water recedes
76, 77, 78 Monstro, Chamber 3
79, 80, 81 Monstro, Chamber 5
82, 83, 84 Neverland, Ship's Hold. After Captain Hook, fly to beam
85, 86, 87 Neverland, Ship's Hold. Use yellow Trinity Mark
88, 89, 90 Neverland, Captain's Cabin. Use green Trinity Mark
91, 92, 93 Hollow Bastion, Rising Falls
94, 95, 96 Hollow Bastion, Castle Gates. Use Gravity on floating chest
97, 98, 99 Hollow Bastion, High Tower. Use Gravity on floating chest