Complex sentence: Though the Salvadoran population is more concentrated in the area around Washington, DC, and the Puerto Rican population is more concentrated in the Baltimore area, all other major Hispanic groups in the state are evenly dispersed between these two areas.
Split into simpler sentences: Though the Salvadoran population is more concentrated in the area around Washington, DC, and the Puerto Rican population is more concentrated in the Baltimore area. While all other major Hispanic groups in the state are evenly dispersed between those two areas.