North American English Dialects, Based on Pronunciation Patterns

There are 8 major English dialect areas in North America... The first 6 of these begin at the eastern seaboard and proceed west, reflecting western settlement patterns.

For many of the cities or towns on the map, you can listen to an audio or video sample of speech of a native (more specifically, someone who was raised there, though not necessarily born there, and whose dialect clearly represents that place).

A VERY extensive hobby!