People from southern California often say the word "the" before describing a road. They might say, "You take the 101 to the 1". People from Pittsburgh never put a "the" before giving directions. They might say, "You take 79 to I90".
Researching for my new book, THE LINK, I have tried to find links to slang in Alaska and slang in Oregon. It's taking time, but I am getting to know some of the local jargon. You too should research the way people talk to one another in the town you find your characters living in or moving to.
Going Outside: Leaving the state for any reason.
Lower 48: The 48 states south of Alaska.
Cheechako: Anyone new to Alaska.
Sourdough: Anyone old to Alaska.
Cache (cash): A very small, food storage cabin - elevated out of reach of animals and your kids.
Bear Insurance: Handguns .357, 44 magnum or better, Pump 12 gauge shotgun, or small, handheld nuclear weapons.
Permanent Fund: Money from the state for living in Alaska.
Tin Dog: Snowmobile, Ski-Doo
Bear Insurance #2: It's the best protection of all...always be with someone you can outrun.
Mukluk: No...it's not something you just stepped in out there on the tundra, but rather very warm, fur boots usually knee high.
The Bush: Places in Alaska you can only get to by plane or boat (that's almost the entire state).
Termination Dust: The first, light dusting of snow on just the mountain tops. It's a warning - the first, really big snow is just around the corner. This of course, triggers an huge shopping frenzy.
Cabin Fever: When Alaskans start bouncing off the walls, from being inside those walls, way too long in winter.
Ditch Divers: All-wheel drive vehicle owners learning they can't drive fast on snow and ice.
Arctic Entry: A pre-entry to your home where dirty, slushy boots, winter gear, mud boots, work clothes, etc... can be taken off before they're taken off 'inside' your clean house.
Mosquito Dope (aka Bug Juice): Mosquito repellent: spray, liquid, and roll on. Patches, bracelets, smoke rings, and citronella anything.
Alaskan Sneakers: Waders - leg, hip, or chest waders.
Combat Fishing: Casting a fishing line where 1500 other people are doing the same thing at the same time. Oh! and you only have six inches between you and those on either side of you.
Sing Song: Any concert, recital, or competition for singing.
Breakup: The process of all the snow and ice finally melting away marking the end of winter and the beginning of tourist season.
Alaskan slang: http://www.untotheuttermost.com/Alaska%20Slang.html
What about the things your character covets? Does she own a special necklace? Is it in style now, or really old? What about her room? What things are in there that will give your reader a tell about your character?
If I wrote that my main character in THE LINK, Seit, hid all of her artist brushes under her bed so her crazy Uncle wouldn't find them and sell them. What would you guess about her? About him?
The things, and how your characters use or hide them will tell a lot about your character.
The things in the town your character lives also give a full picture of your character, and how they grew up, or what they are dealing with now.
In Vermont there are tractors for sale in many yards. They are old-fashioned looking tractors, like the red ones in toy stores. Do you ever see tractors for sale in your town? In a city? With this small detail, you can let your reader know where your main character grew up.