Caldwell, Idaho Demographics & Population 2026
During the 2020–2024 ACS period, Caldwell, Idaho had a total population of 66,516, the 5th largest city in Idaho, with a median household income of $73,058, which is 6% lower than the state average. The poverty rate is 11.9%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Caldwell is the 5th largest city in Idaho with a population of 66,516.
Caldwell Quick Facts
How Caldwell Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 63,465 | 66,516 | +4.8% |
| Median household income | $66,663 | $73,058 | +9.6% |
| Median home value | $322,100 | $367,300 | +14.0% |
How Caldwell Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A diverse community with significant representation from multiple racial and ethnic groups.
State average: 36 | National average: 61
Education
Educational Attainment (Adults 25+)
Caldwell Rankings in Idaho
Explore Idaho Rankings
Other Cities in Canyon County
Cities Similar to Caldwell
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Idaho Falls | 67,725 | $73,110 | $335,500 | 31.7% | 11.5% |
| Coeur d'Alene | 56,447 | $72,338 | $483,500 | 31.2% | 9.2% |
| Pocatello | 57,635 | $60,418 | $271,000 | 32.6% | 14.8% |
| Twin Falls | 54,164 | $61,205 | $321,300 | 24.5% | 11.4% |
| Post Falls | 43,391 | $82,183 | $477,400 | 25.3% | 11.1% |
Population Overview
Caldwell is a mid-sized community located in Idaho, within Canyon County. The total population is 66,516. It ranks as the 5th most populous out of 232 Census-designated places in Idaho.
Age Demographics
The median age in Caldwell is 31.5 years. This is 16% lower than the state median of 37.3 years. With 30.3% of the population under 18, Caldwell has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Caldwell is $73,058. This is 6% lower than the state median of $77,800. It is also 10% lower than the national median of $80,734. The poverty rate stands at 11.9%. This is 13% higher than the state poverty rate of 10.6%. The unemployment rate is 5.0%. This is 34% higher than the state rate of 3.7%. The median home value is $367,300. Housing costs are 12% lower than the state median of $418,600. The home-value-to-income ratio is 5.0x. 73.0% of occupied housing units are owner-occupied. This homeownership rate is 1% higher than the state average of 72.1%.
Race & Ethnicity
The largest racial or ethnic group in Caldwell is White (non-Hispanic), making up 56.0% of the population. Hispanic or Latino residents account for 36.8%. The Black or African American population (0.3%) is well below the state average of 0.7%. The Hispanic or Latino population is significantly higher than the state average (36.8% vs 13.7%).
Education
19.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 39% lower than the state rate of 31.8%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 83.8%.
Data Sources & Methodology
All demographic data for Caldwell, Idaho is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Idaho state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 232 Census-designated places in Idaho. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Caldwell, Idaho?
Caldwell, Idaho has a population of 66,516 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Caldwell, ID?
The median household income in Caldwell is $73,058, which is 10% lower than the national median of $80,734.
What is the poverty rate in Caldwell, ID?
The poverty rate in Caldwell is 11.9%. This means approximately 7,758 residents live below the federal poverty line.
What is the racial makeup of Caldwell, Idaho?
Caldwell's population is 56.0% White, 0.3% Black, 36.8% Hispanic/Latino, and 0.9% Asian.
What is the median home value in Caldwell, ID?
The median home value in Caldwell is $367,300. The home-value-to-income ratio is 5.0x.
How educated is Caldwell, Idaho?
19.5% of adults (25+) in Caldwell hold a bachelor's degree or higher, and 5.2% hold a graduate or professional degree.