I've heard suggestions ranging everywhere from Georgia to California. I have this theory that people tend to lean towards their own home states. but anyway, Let's review the facts, shall we?
1. In the opening sequence, everyone's dressed pretty warmly to be outside at this sporting event (football, most likely). Assuming it is football, the way people are dresssing isn't all that unusual, considering it gets pretty chilly at night just about everywhere in fall. All in all, the weather in Lawndale is pretty mild, seeing the only kind of precipitation is rain. But there is quite a bit of rain, i think. In fact, most of the plots in the shows seem to rely on rain as a joke in one way or another.
"oh, it can't rain on daphne's (?) wedding, it just can't!" ~"i don't"
"oh, good, i was feeling too dry." ~the daria hunters"
It rains on the library in "fair enough" and there is a thunderstorm in "gifted" and, of course, there was the storm in "monster" that caused daria and jane to catch a ride with mr. o'neil.
So, it rains a lot in and around Lawndale. Also, Lawndale and the city that beavis and butthead lived in (forgive me, i can't remember the name of it) were within driving distance, as stated in the Daria Diaries, (they never mentioned a plane or train, and daria talks about getting a ride with the moving guys) so we can probably place them in about the same region.
2. No one in lawndale seems to have any kind of regional accent. except for dr. sharr, but i think she was faking it to try to get more attention. Anyway, dr. sharr's accent was southern-ish. but besides her, nothing.
3. there just isn't that much ethnic diversity in lawndale. to my knowledge, jodie's family and mack's family seem to be the only black families. Tiffany, i think, is asain-american. am i wrong about this?
so, let's recap. lots of rain. no regional accents. not much ethnic diversity. what do you think?