How many people live in Cimarron County, OK?
Refreshed annually
In 2025, there were about 2,100 people living in Cimarron County, OK. That makes Cimarron County the 77th-most populous county in Oklahoma. It is home to 0.05% of people living in the state.
2.06K
population of Cimarron County, OK (2025)
0.05%
County share of the Oklahoma population (2025)
About 2,100 people lived in Cimarron County, OK in 2025.
Population estimates, 2000–2025
What are Cimarron County, OK's age demographics?
About 534 Cimarron County residents are aged 65 and older in 2024. That represents 25% of its population. For comparison, the age group represents 17% of Oklahoma’s population and 18% in the US overall.
Another 574 Cimarron County residents, or 26.9% of the population, were children under 18. For comparison, the age group represents 23.7% of Oklahoma’s population and 21.6% in the US overall.
A lower share of Cimarron County, OK's population is aged 25–44 than the US as a whole.
Population estimates by age group, (2024)
What are Cimarron County, OK's racial and ethnic demographics?
Non-Hispanic white residents make up 67.8% of the Cimarron County population, higher than the national share of 57.5%. Cimarron County also has a larger share of people identifying as Hispanic (26.8%) than the US overall (20%).
In contrast, Cimarron County’s non-Hispanic Black or African American population accounts for 0.75%, below the 12.6% nationwide, and the non-Hispanic Asian population makes up 0.47% 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.
Cimarron County, OK has a higher share of a Hispanic population than Oklahoma as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Cimarron County, OK is Boise City with about 1,100 residents in 2024.
Cities and towns in Cimarron County, OK ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Boise City | 1,077 |
| 2. | Keyes | 254 |
| 3. | Balance of Cimarron County | 802 |
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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.
