How many people live in Oakland County, MI?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 1.3 million people living in Oakland County, MI. That makes Oakland County the 33rd-most populous county in the US. It is also the second-largest in Michigan, accounting for 12.8% of the state’s population.
1.3M
population of Oakland County, MI (2024)
12.8%
County share of the Michigan population (2024)
About 1.3 million people lived in Oakland County, MI in 2024.
Population estimates, 2000–2024
What are Oakland County, MI’s age demographics?
About 250,500 Oakland County, MI residents are aged 65 and older in 2024. That represents 19.3% of its population. For comparison, the age group represents 19.6% of Michigan’s population and 18% in the US overall.
Another 256,700 Oakland County residents, or 19.8% of the population, were children under 18. For comparison, the age group represents 20.8% of Michigan’s population and 21.6% in the US overall.
A lower share of Oakland County, MI's population is aged under 18 than the US as a whole.
Population estimates by age group, (2024)
What are Oakland County, MI’s racial and ethnic demographics?
Non-Hispanic white residents make up 68.8% of the Oakland County, MI population, higher than the national share of 57.5%. Oakland County also has a larger share of people identifying as non-Hispanic Black or African American (13.5%) than the US overall (12.6%).
In contrast, Oakland County’s Hispanic population accounts for 5.3%, below the 20% nationwide, and the non-Hispanic American Indian and Alaska Native population makes up 0.24% of the county, compared with 0.72% 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.
Oakland County, MI has a higher share of a non-Hispanic Asian population than Michigan as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Oakland County, MI is Troy with about 89,200 residents in 2024.
Cities and towns in Oakland County, MI ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Troy | 89,209 |
| 2. | Farmington Hills | 84,173 |
| 3. | Rochester Hills | 78,330 |
| 4. | Southfield | 76,874 |
| 5. | Waterford | 70,538 |
| 6. | Novi | 67,675 |
| 7. | West Bloomfield | 66,586 |
| 8. | Pontiac | 62,528 |
| 9. | Royal Oak | 58,251 |
| 10. | Bloomfield | 44,361 |
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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.
