You could do LA by district lines - the congressman from Watts, say.(It's the first LA district I thought of, sorry.) You wouldn't give the north half of Watts and half the district above it to one person and the south half to someone else. A congressman might get two districts. But they'd be whole districts.
On the other hand, the whole Fayetteville metro area has about 150,000-if you include Fort Bragg. It's a significant difference, and that metro contains three cities and two Army bases.