Once you talk to the Police Chief for the first time, the Jinjo Rescue quest becomes availible. Here are the locations of all the Rescuable Jinjos:

Blue Jinjo Cell--: Behind houses near Mumbo's Hut. Blue Jinjo Switch: Next to the cell. Blue Jinjo House-: Along the river near the Cell. Blue Jinjo Reward: 20 Notes Minjo Replacement: In front of the cell. Minjo Reward-----: 20 Notes

Green Jinjo Cell--: Near the entrance to Logbox 720 world. Green Jinjo Switch: Near the entrance to Logbox 720 world. Green Jinjo House-: Near the entrance to Logbox 720 world, down the street. Green Jinjo Reward: 35 Notes Minjo Replacement-: Near the entrance to Logbox 720 world, down the street. Minjo Reward------: 35 Notes

Orange Jinjo Cell--: By the waterfront. Orange Jinjo Switch: Above the "Kazino" by the Jinjo Bingo palace. (Roof) Orange Jinjo House-: On a hill near Uptown. Orange Jinjo Reward: 50 Notes Minjo Replacement--: By the Lighthouse. Minjo Reward-------: 50 Notes

Purple Jinjo Cell--: Atop the boathouse Purple Jinjo Switch: On the island near the top of the boathouse. Purple Jinjo House-: On an island in the water near the boathouse. Purple Jinjo Reward: 75 Notes Minjo Replacement--: Wanding the shoreline by the East Gate. Minjo Reward-------: 75 Notes

Red Jinjo Cell---: Right outside the upper Uptown exit. Red Jinjo Switch-: Atop the roofs of Uptown Red Jinjo House -: At the shipyard docks, around the edge. Red Jinjo Reward:: 100 Notes Minjo Replacement: Right below Uptown, near the water. Minjo Reward-----: 100 Notes

Yellow Jinjo Cell--: By Boggy's Gym Yellow Jinjo Switch: Rooftop of the Jiggoseum Doors Yellow Jinjo House-: Inside of Uptown Yellow Jinjo Reward: 125 Notes Minjo Replacement--: On the docks. Minjo Reward-------: 125 Notes