How many people live in Malheur County, OR?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 32,300 people living in Malheur County, OR. That makes Malheur County the 20th-most populous county in Oregon. It is home to 0.76% of people living in the state.
32.3K
population of Malheur County, OR (2024)
0.76%
County share of the Oregon population (2024)
About 32,300 people lived in Malheur County, OR in 2024.
Population estimates, 2000–2024
What are Malheur County, OR’s age demographics?
About 5,600 Malheur County residents are aged 65 and older in 2024. That represents 17.3% of its population. For comparison, the age group represents 19.9% of Oregon’s population and 18% in the US overall.
Another 8,300 Malheur County residents, or 25.6% of the population, were children under 18. For comparison, the age group represents 19.3% of Oregon’s population and 21.6% in the US overall.
A higher share of Malheur County, OR's population is aged under 18 than the US as a whole.
Population estimates by age group, (2024)
What are Malheur County, OR’s racial and ethnic demographics?
Non-Hispanic white residents make up 59.3% of the Malheur County, OR population, higher than the national share of 57.5%. Malheur County, OR also has a larger share of people identifying as Hispanic (35.2%) than the US overall (20%).
In contrast, Malheur County’s non-Hispanic Black or African American population accounts for 1.3%, below the 12.6% nationwide, and the non-Hispanic Asian population makes up 1.2% of the county, compared with 6.5% 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.
Malheur County, OR has a higher share of a Hispanic population than Oregon as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Malheur County, OR is Ontario with about 12,000 residents in 2024.
Cities and towns in Malheur County, OR ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Ontario | 11,957 |
| 2. | Nyssa | 3,269 |
| 3. | Vale | 2,057 |
| 4. | Adrian | 160 |
| 5. | Jordan Valley | 138 |
| 6. | Balance of Malheur County | 14,734 |
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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.
