A cewar Ofishin Ƙidaya na Amurka, gundumar tana da yanki mai girman kilomita murabba'i 4,394 (11,380 km2), wanda 4,391 square miles (11,370 km2) na ƙasa ne da 3.3 square miles (8.5 km2) (0.07%) na ruwa. Gundumar Lea tana cikin kudu maso gabashin New Mexico kuma tana iyaka da Texas zuwa kudu da gabas. Tambaya: menene yankin gundumar Lea?
duka yanki na murabba'in mil 4,394 (11,380 km2)