How many people live in San Juan County, NM?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 120,800 people living in San Juan County, NM. That makes San Juan County the fifth-most populous county in New Mexico. It is home to 5.7% of people living in the state.
121K
population of San Juan County, NM (2024)
5.7%
County share of the New Mexico population (2024)
About 120,800 people lived in San Juan County, NM in 2024.
Population estimates, 2000–2024
What are San Juan County, NM’s age demographics?
About 21,700 San Juan County, NM residents are aged 65 and older in 2024. That represents 18% of its population. For comparison, the age group represents 20.3% of New Mexico’s population and 18% in the US overall.
Another 29,100 San Juan County, NM residents, or 24.1% of the population, were children under 18. For comparison, the age group represents 21.2% of New Mexico’s population and 21.6% in the US overall.
A higher share of San Juan County, NM's population is aged under 18 than the US as a whole.
Population estimates by age group, (2024)
What are San Juan County, NM’s racial and ethnic demographics?
Non-Hispanic American Indian and Alaska Native residents make up 40.2% of the San Juan County, NM population, higher than the national share of 0.72%. San Juan County, NM also has a larger share of people identifying as Hispanic (20.2%) than the US overall (20%).
In contrast, San Juan County’s non-Hispanic white population accounts for 35.8%, below the 57.5% nationwide, and the non-Hispanic Black or African American population makes up 0.57% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
San Juan County, NM has a higher share of a non-Hispanic American Indian and Alaska Native population than New Mexico as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in San Juan County, NM is Farmington with about 46,300 residents in 2024.
Cities and towns in San Juan County, NM ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Farmington | 46,262 |
| 2. | Bloomfield | 7,363 |
| 3. | Aztec | 6,129 |
| 4. | Kirtland | 574 |
| 5. | Balance of San Juan County | 60,489 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
