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The 2009 Sierra County, NM, population is 12,316. There are 3 people per square mile (population density).
The median age is 48.5. The US median is 37.6. 57.64% of people in Sierra County, NM, are married. 14.56% are divorced.
The average household size is 2.07 people. 13.38% of people are married, with children. 6.70% have children, but are single.
87.00% of people are white, 0.49% are black, 0.21% are asian, 1.66% are native american, and 11.12% claim 'Other'.
28.01% of the people in Sierra County, NM, claim hispanic ethnicity (meaning 71.99% are non-hispanic).
Sierra, NM People data
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