Hillwood[]
Educational institutions[]
- Madame Bovary's Dance School for Boys ("Ransom")
- Madame Parvenu's Finishing School ("Polishing Rhonda")
- P.S. 118 (est. 1932)
- Auditorium, named for President Woodrow Wilson
- Classroom 206
- Cafeteria
- Gym
- Playground
- Principal Wartz's office
- Urban Tots Preschool ("Helga on the Couch")
Recreation[]
Entertainment[]
- Avon (movie theater) ("Jamie O in Love")
- Aquarium ("Field Trip")
- Arcade (several)
- Bowling alley ("Coach Wittenberg (episode)")
- Circle Theater ("The Old Building")
- Community Center ("6th Grade Girls")
- Dinoland
- Ernie's Pool Hall ("Downtown as Fruits")
- The Kiska (movie theater)
- Skate Time rollerskating rink ("Helga's Boyfriend")
- Wanky Land ("Buses, Bikes, and Subways")
- Zoological Garden
Cultural buildings[]
Spiritual sites[]
Sports[]
Authority buildings[]
- City Hall
- Federal Office of Information ("Arnold's Christmas", Hey Arnold!: The Movie)
- Police Precinct 2, Vine Street substation
- Fire Station ("Career Day")
- Red Shed ("Gerald's Game")
Cafés and Restaurants[]
- Antonio's Pizzeria ("Pigeon Man")
- Bigal's Cafe ("Intro")
- Chez Paris
- Chez Pierre
- Deli ("Mugged")
- Dewey's Milkshake House ("New Teacher")
- The Donut Café ("Career Day")
- El Patio ("Family Man")
- The Fudge Place ("New Teacher")
- Mickey's Dog Pound ("Dangerous Lumber")
- Mixtas Hot Dogs ("Phoebe Takes the Fall")
- O'Conner's ("Eugene Goes Bad")
- Omar's Falafel Hut ("Helga's Makeover")
- Root Beer Palace ("Grudge Match")
- Salome's Pizzeria ("Big Gino")
- Slausen's Ice Cream Parlor
- Steak House ("Big Bob's Crisis")
- Sub King ("Helga Sleepwalks")
- Sundae Salon ("Hey Harold!")
- Tri-State Diner ("Grandpa's Packard")
Medical institutions[]
- Drymon Medical Clinic
- Gentle Dentistry ("Helga Blabs It All")
- Hillwood City Pharmacy ("Arnold's Thanksgiving")
- Hillwood Medical Center ("Helga on the Couch")
- Metro Tonsils ("Gerald's Tonsils")
Transportation service[]
- Airport
- Pier
- Union Station (abandoned train station) ("Haunted Train")
- Bus Depot
Other business enterprises[]
- Baby Town ("Gerald's Secret")
- Bicycle Store ("Hey Harold!")
- Big Bob's Beeper Emporium
- Car Wash ("Grudge Match")
- Comics Store ("Weighing Harold")
- Computer Time ("Arnold's Christmas")
- Copy Stop ("Abner Come Home")
- Corner Store ("Helga's Makeover")
- Crown Jewel ("Helga's Locket")
- Fake-A-Bake ("Heat")
- Furniture Warehaus ("Grudge Match")
- Future Tech Industries (Hey Arnold!: The Movie)
- Gene's Hi-Fi ("Cool Jerk")
- Georgia's Candles ("Benchwarmer")
- Green Meats
- Holiday's Home Furnishings ("Arnold's Thanksgiving")
- Holly’s (candy store) ("Oskar Can't Read?")
- Horco ("Oskar Gets a Job")
- Hoske's ("Arnold's Christmans")
- House of Costumes ("Hookey")
- J.J.'s Sausage Company ("Arnold's Hat")
- Jennings Hardware ("Freeze Frame")
- Kacy's ("Arnold's Christmas")
- Karaoke Klub ("Principal Simmons")
- Lamoreaux's Bookstore
- Madame Blanche’s Love Potion Shop
- Notani Tire Company ("Gerald's Secret")
- Paddle Paul's Canoe Rentals ("Harold's Bar Mitzvah")
- Park's Lucky Grocery Company ("Hookey")
- Pet Love ("Helga's Parrot")
- Robertson Records ("Mr. Hyunh Goes Country")
- Roscoe's Funky Rags ("Downtown as Fruits", "Monkeyman!")
- Satellite Industries ("Door Number 16")
- Son Studios ("Mr. Hyunh Goes Country")
- Suber's Optometry and Boutique ("Rhonda's Glasses")
- Talent Agency ("School Dance")
- Tedesco Industries ("Oskar Gets a Job")
- Tildales ("Arnold's Christmas")
- Toller's Bowlers ("Door Number 16")
- Tom's Market ("Heat")
- Vic & Morrie's Garage ("Grandpa's Packard")
- Wang's Bait & Tackle ("Big Caesar")
- Watch Repair ("Arnold's Christmas")
- Yahoo Chocolate Factory ("Buses, Bikes, and Subways")
Residential buildings[]
- Big Gino's place
- Dino Spumoni's house
- Eugene's house
- Frankie G.'s house
- Gerald's house
- Harold's house
- Helga's house
- Jolly Olly Man's house
- Lila's house
- Lloyd's Rest Home ("Part Time Friends")
- Lorenzo's house
- Maria's house
- Patty's house
- Phoebe's house
- Principal Wartz's house
- Rex Smythe-Higgins's house
- Rhonda's house
- Sammy Redman's house ("Rich Guy")
- Sid's house
- Mr. Simmons' house
- Stinky's house
- The Sunset Arms
Washington, DC[]
Other[]
- Arkansas (mentioned in "Stinky's Pumpkin")
- Stinky Farms (possibly out of business) ("Stinky's Pumpkin")
- Stinky's Stand (produce stand; most likely out of business) (pictured in "Stinky's Pumpkin")
- Arnie's hometown (possibly imaginary) ("Arnold Visits Arnie")
- Arnie's farm (possibly imaginary) ("Arnold Visits Arnie")
- Country Store (possibly imaginary) ("Arnold Visits Arnie")
- Doris Floral (possibly imaginary) ("Arnold Visits Arnie")
- 1st Bank (possibly imaginary) ("Arnold Visits Arnie")
- The Odeon (movie theater; possibly imaginary) ("Arnold Visits Arnie")
- Swimming Hole (possibly imaginary) ("Arnold Visits Arnie")
- Big Guy's Restaurant ("Road Trip")
- Floyd's Restaurant ("Road Trip")
- Grease Pit ("Coach Wittenberg")
- Stan's Car Repair Shop ("Road Trip")
- Olga's school in Alaska ("Student Teacher")
- Lighthouse ("Married")
- New York City ("Married")
- San Lorenzo ("The Journal", Hey Arnold!: The Jungle Movie)
- Venice, Italy ("Married")
- The Wheeler Inn ("Road Trip")