How many people live in Adams County, IA?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 3,600 people living in Adams County, IA. That makes Adams County the 99th-most populous county in Iowa. It is home to 0.11% of people living in the state.
3.61K
population of Adams County, IA (2024)
0.11%
County share of the Iowa population (2024)
About 3,600 people lived in Adams County, IA in 2024.
Population estimates, 2000–2024
What are Adams County, IA’s age demographics?
About 939 Adams County, IA residents are aged 65 and older in 2024. That represents 26% of its population. For comparison, the age group represents 18.9% of Iowa’s population and 18% in the US overall.
Another 791 Adams County residents, or 21.9% of the population, were children under 18. For comparison, the age group represents 22.5% of Iowa’s population and 21.6% in the US overall.
A higher share of Adams County, IA's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Adams County, IA’s racial and ethnic demographics?
Non-Hispanic white residents make up 94.5% of the Adams County, IA population, higher than the national share of 57.5%.
In contrast, Adams County’s Hispanic population accounts for 2.4%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 1.1% 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.
Adams County, IA has a higher share of a non-Hispanic white population than Iowa as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Adams County, IA is Corning with about 1,500 residents in 2024.
Cities and towns in Adams County, IA ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Corning | 1,509 |
| 2. | Prescott | 186 |
| 3. | Nodaway | 74 |
| 4. | Carbon | 32 |
| 5. | Lenox (pt.) | |
| 6. | Balance of Adams County | 1,805 |
Keep exploring
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.
