Gnome #30 - Ripley
Location: Town Hall (Hawkins Square)
Gnome #30 is called "Ripley" and is located inside Town Hall after you unlock the back office area with Joyce and Hopper in Stranger Things 3: The Game. Note that there are several Gnomes to be found in this office area of Town Hall!
Gnome #31 - Tony
Location: Town Hall (Hawkins Square)
Gnome #31 is known as "Tony" and can be found inside the back office area of Town Hall. To find this Gnome, you'll need to unlock the wooden door near the elevator. To do this, look to the left of the elevator on the wall. There, you'll be able to use Dustin's hacking ability to enter a code which unlocks a hidden gym area. Inside, you'll find Gnome #31 in Stranger Things 3: The Game.
Gnome #32 - Charlene
Location: Town Hall (Hawkins Square)
Gnome #32 is known as "Charlene" and can be found inside Town Hall as you investigate the back area for clues left by the Mayor in Stranger Things 3: The Game.
Gnome #33 - Willie
Location: Town Hall (Hawkins Suburbs)
Gnome #33 is known as "Willie" and can be found inside the bathroom area as you explore the back offices of Town Hall in Stranger Things 3: The Game.
Gnome #34 - Arnold
Location: Murray's Warehouse
Gnome #34 is called "Arnold" and can be found outside of Murray's Warehouse. Before you head inside, take a right and hug the fence until you reach the area shown above with Gnome #34 in Stranger Things 3: The Game.
Gnome #35 - Falken
Location: Kill Room (Murray's Warehouse)
Gnome #35 is called "Falken" and can be found inside the Kill Room of Murray's Warehouse. To get it, you'll need to solve the switch puzzle on the wall. To do this, you need to flip switches 1, 2, 3, 5, and 8 starting with the switch immediately on your left after you enter the room. When done correctly, Gnome #35 will spawn in the center of the roomin Stranger Things 3: The Game.
Gnome #36 - Bastion
Location: Downstairs Escalator (Starcourt Mall)
Gnome #36 is called "Bastion" and is located on the lower level of the Starcourt Mall. To find him, you need to look on the right side of the escalator. It's hard to see, but you should be able to interact with Gnome #36 and pick it up in Stranger Things 3: The Game.
Gnome #37 - Magnum
Location: Hawkins Post (Hawkins Square)
Gnome #37 is known as "Magnum" and can be found inside the Hawkins Post near a set of filing cabinets. Note that you'll need to visit the Hawkins Post to unlock Nancy and Jonathan as playable characters in Stranger Things 3: The Game.
Gnome #38 - Clara
Location: Mike's House (Hawkins Suburbs)
Gnome #38 is named "Clara" and is found in Mike’s House in Hawkins Suburbs. You'll find it in the corner of the kitchen, near the fridge. It's barely visible, but it's there.
Gnome #39 - Deckard
Location: 2nd Floor (Hospital)
Gnome #39 is named "Deckard" and is located on the second floor of the Hospital. Note that you'll need to have Erica unlocked in order to crawl through the vent and reach the break room area where Gnome #39 is hidden in Stranger Things 3: The Game.