countryaah.com
Major Cities and Towns in Luna County, New Mexico Deming, New Mexico Location and History. Area: 8.9 square miles; Population: 14,000 (2020 Census); Zip Codes: 88030; Latitude: 32.2665° N; Longitude: 107.7431° W; Deming is the largest city and the county seat of Luna County, New Mexico.