North American English Dialects
Here are some links about North American regionalisms grouped by region and state/province. :-)
General North America
Atlas of North American English FYI, This site probably hasn't been updated since 2005-- it's a little broken.
North American English Dialects, Based on Pronunciation Patterns A SUPER cool site by linguist Mr. Rick Aschmann, with the main attraction being a very huge, very detailed dialect map of North America. It's so so cool, check it out!!
Pop vs Soda is a web-based project to plot the regional variations in the terms used to describe carbonated soft drinks in North America. You can help by filling out the survey!
United States
AmeriSlang: expressions of our American ancestors (Archived)
Dictionary of American Regional English (DARE)
Do You Speak American? A PBS page all about American English and its dialects.
Harvard Dialect Survey Maps and Results
You Have An Accent Even On Twitter A NPR article about how there's a regional variation even in how we talk on social media!
The North
American Accent Undergoing Great Vowel Shift A 2006 NPR interview with Professor William Labov about the shift of vowel sounds in the inland northern cities.
Maine
The Wicked Good Guide to Mainah English (Archived)
Vermont
Talking Country phrases from the border between Vermont and Quebec.
Vermont Accent: Endangered Species? (Archived)
Massachusetts
The Wicked Good Guide to Boston English (Archived)
Boston Local Lingo (Archived)
Rhode Island
Talking the talk in Rhode Island (Archived)
New York
New Yawk Talk NPR interview of William Labov on his 40-year study of the various accents of New York City.
The Mid-Atlantic
Pennsylvania
CoalSpeak - The Official CoalRegion Dictionary
Dialects Changing, But Not Disappearing In Philadelphia A 2013 NPR report about changes in the Philly dialect.
The Original Lingo of Northeast PA (Archived)
Philly Tawk (Archived)
Maryland
Lexicon of Bawlamarese Baltimore, MD
Youz in Maryland talk funny... The "Merlin" Dialect
Baltimorese (Archived)
Appalachia
Inside Appalachia: Do We Talk Funny? "Ap-pal-atch-un" vs "Ap-pal-ay-shun"
West Virginia
Hillbonics: Speak Like a Southern West Virginian (Archived)
The South
A Glossary of Quaint Southernisms
Southern Dialect (Archived)
Virginia
Tidewater Voices: Conversations in Southeastern Virginia
ODU team records area's accent - English with 'deep roots' (Archived) Article about the "Tidewater Voices" project
A Place Called Guinea: In Gloucester County, a centuries-old culture with its own dialect endures
Local Expressions from Bygone Times in the Piedmont and Lower Shenandoah Valley
The Tiny US Island With a British Accent Tangier Island, VA
Understanding Delmarva’s ‘whole-nother’ way of speaking
North Carolina
‘Talkin’ Tar Heel’ Explores Dialects
6 Expressions Say it All: Language Variation in the Tar Heel State
A Dialect Dictionary of Lumbee English (Archived)
Louisiana
A Lexicon of New Orleans Terminology and Speech
Oklahoma
Oklahoma Dictionary (Archived)
Florida
A new South Florida dialect is forming in real time NPR interview of Philip M. Carter, professor of linguistics at Florida International University, about a new Spanish-influenced dialect of English being spoken in Southern Florida.
The Midwest
"Canadian" raising in the Northern Midwest of the United States (Archived)
Missouri
Saving A French Dialect That Once Echoed In The Ozarks An article by NPR about Pawpaw French, a dialect once commonly spoken in an isolated mining region in Southeastern Missouri.
Wisconsin
Speak 'Scansin (Archived)
The West
American West/Cowboy – Vocabulary and Slang
Utah
Utah's Colloquialisms (Archived)
California
The California Central Coast Online Dictionary (Archived) (The website still comes up in search results, but won't load-- I'm not sure if the website is down temporarily, or permanently. You can't search or view the archived dictionary, so try visiting http://cccod.calpoly.edu, maybe it's up now.
Canada
An American's Guide to Canada: Canadianisms (Archived)
Canadian English (Archived)
Canadian Raising and Other Oddities (Archived)
Ontario
Ottawa Valley Expressions (Archived)