There are 9 zip codes in Sierra County, New Mexico. The most populated is 87901, located in Truth Or Consequences. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
87901Truth Or Consequences6,264
87935Elephant Butte1,718
87942Williamsburg1,542
87931Caballo706
87930Arrey408
88042Hillsboro327
87939Monticello267
87943Winston254
87933Derry0

Sierra County, New Mexico Zip Codes by Population (2024)