SInce Jason fucked up so badly, I feel the need to give the regional background that he failed to provide.
While he was clearly very wrong about where Ipswich is, (I'm wondering if he was actually getting Ipswich confused with Scituate) he was correct that they seem to think it's much closer to Marblehead than it is. It's about 10-15 miles as the crow flies, but on opposite sides of Cape Ann. So when they said something like "maybe you were seeing the Marblehead lighthouse" that was complete bunk. There's a whole bunch of land in the way between Ipswich and Marblehead.
There definitely are not any cliffs like that anywhere nearby. There actually are some hills with steep slopes leading down to the water, but nothing like what you see in the movie. The beach they were theoretically on also only has one road in and out.
This gets back to the incompetent cops angle, because if they had any sense at all, they would just block off the road and everyone would be trapped at the beach (unless you can levitate a car, which the cops don't know is possible). And I think it goes without saying that there's not a wide open, perfectly flat area leading up to cliffs large enough to have a multiple minute high speed chase across.
Also, despite being a town on the ocean, there's no harbor like we see in that establishing shot. The north side of Cape Ann is mostly saltwater marshes leading to beaches. The center of town is built on the mouth of the river before it opens up to marsh as it gets to the ocean. We also don't have any bars for high schoolers that I know of.
One aspect I can confirm is that it can be pretty foggy here. Nothing like the smoke machine effects in the movie, but with all the marshes and the river, it's pretty damp and foggy a lot of the time. The dirt roads leading to random barns and colonial era houses in the middle of the woods and fields are also pretty legit. That is the stuff that felt the most like Ipswich to me.
Also, it's full of hunky, teenage boys who never wear sleeves. I can definitely confirm that.