Castleford, Idaho Demographics & Population 2026
During the 2020–2024 ACS period, Castleford, Idaho had a total population of 183, the 196th largest city in Idaho, with a median household income of $46,667, which is 40% lower than the state average. The poverty rate is 20.2%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 40% below the state average, indicating significant economic challenges.
- Only 5.6% of adults have a bachelor's degree, well below the national average of 35.7%.
Castleford Quick Facts
How Castleford 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 | 166 | 183 | +10.2% |
| Median household income | $44,167 | $46,667 | +5.7% |
How Castleford 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
Moderate diversity with one or two groups making up the majority.
State average: 36 | National average: 61
Education
Educational Attainment (Adults 25+)
Castleford Rankings in Idaho
Explore Idaho Rankings
Other Cities in Twin Falls County
Cities Similar to Castleford
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Donnelly | 195 | N/A | $369,200 | 6.2% | 44.6% |
| Minidoka | 179 | $41,736 | $112,500 | 0.0% | 16.8% |
| Peck | 194 | $58,182 | $152,800 | 14.2% | 30.4% |
| Lava Hot Springs | 218 | N/A | $316,700 | 18.4% | 12.5% |
| Acequia | 153 | N/A | $95,600 | 11.7% | 7.8% |
A note before these figures: with a population of 183, Castleford's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Castleford is a small community located in Idaho, within Twin Falls County. The total population is 183. It ranks as the 196th most populous out of 232 Census-designated places in Idaho.
Age Demographics
The median age in Castleford is 40.7 years. This is 9% higher than the state median of 37.3 years.
Economy, Income & Housing
The median household income in Castleford is $46,667. This is 40% lower than the state median of $77,800. It is also 42% lower than the national median of $80,734. The poverty rate stands at 20.2%. This is 91% higher than the state poverty rate of 10.6%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 5.0%. This is 33% higher than the state rate of 3.7%. 63.4% of occupied housing units are owner-occupied. This homeownership rate is 12% lower than the state average of 72.1%.
Race & Ethnicity
The largest racial or ethnic group in Castleford is White (non-Hispanic), making up 50.8% of the population. Hispanic or Latino residents account for 49.2%. The Hispanic or Latino population is significantly higher than the state average (49.2% vs 13.7%).
Education
5.6% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. This is 82% 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 67.2%.
Data Sources & Methodology
All demographic data for Castleford, 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 Castleford, Idaho?
Castleford, Idaho has a population of 183 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Castleford, ID?
The median household income in Castleford is $46,667, which is 42% lower than the national median of $80,734.
What is the poverty rate in Castleford, ID?
The poverty rate in Castleford is 20.2%. This means approximately 37 residents live below the federal poverty line.
What is the racial makeup of Castleford, Idaho?
Castleford's population is 50.8% White, 0.0% Black, 49.2% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Castleford, ID?
The Census Bureau does not publish a reliable median home value estimate for Castleford — there are too few owner-occupied homes in the ACS sample. The national median is $332,700.
How educated is Castleford, Idaho?
5.6% of adults (25+) in Castleford hold a bachelor's degree or higher, and 1.6% hold a graduate or professional degree.