As far as maps go you might also look at geography programs. There's a fair amount of work that goes on there in GIS (geographic information systems) and cartography. The emphasis would certainly be somewhat different, but I can imagine someone putting together a joint program of study with CS.

Even if you're interested primarily in programming for mapping software, it would seem like a good understanding of cartographic theory would be helpful -- map projections (how a 3D world gets represented in 2D), symbolization (how do you choose symbols in order to effectively communicate information of various types), etc.

UC Santa Barbara has had a strong reputation in GIS for many years, and you can't beat the location. SUNY-Buffalo is another one, and then of course most of the Big 10 schools like Wisconsin, etc. would be strong and also offer strong CS programs.