New Plymouth, Idaho Demographics & Population 2026
During the 2020–2024 ACS period, New Plymouth, Idaho had a total population of 1,794, the 72nd largest city in Idaho, with a median household income of $65,375, which is 16% lower than the state average. The poverty rate is 9.4%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
New Plymouth Quick Facts
How New Plymouth 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 | 1,863 | 1,794 | -3.7% |
| Median household income | $59,875 | $65,375 | +9.2% |
| Median home value | $199,200 | $277,500 | +39.3% |
How New Plymouth 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 less diverse community where one racial or ethnic group represents a large majority.
State average: 36 | National average: 61
Education
Educational Attainment (Adults 25+)
New Plymouth Rankings in Idaho
Explore Idaho Rankings
Other Cities in Payette County
Cities Similar to New Plymouth
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Priest River | 1,778 | $58,782 | $299,100 | 12.5% | 5.0% |
| Shoshone | 1,911 | $69,392 | $229,800 | 10.7% | 10.7% |
| Spirit Lake | 1,972 | $65,192 | $436,600 | 15.4% | 6.7% |
| Paul | 1,586 | $66,500 | $268,100 | 13.1% | 11.4% |
| Sugar City | 2,122 | $66,953 | $350,000 | 44.4% | 8.7% |
Population Overview
New Plymouth is a small community located in Idaho, within Payette County. The total population is 1,794. It ranks as the 72nd most populous out of 232 Census-designated places in Idaho.
Age Demographics
The median age in New Plymouth is 32.7 years. This is 12% lower than the state median of 37.3 years.
Economy, Income & Housing
The median household income in New Plymouth is $65,375. This is 16% lower than the state median of $77,800. It is also 19% lower than the national median of $80,734. The poverty rate stands at 9.4%. This is 11% lower than the state poverty rate of 10.6%. The unemployment rate is 3.9%. This is 5% higher than the state rate of 3.7%. The median home value is $277,500. Housing costs are 34% lower than the state median of $418,600. The home-value-to-income ratio is 4.2x. 74.8% of occupied housing units are owner-occupied. This homeownership rate is 4% higher than the state average of 72.1%.
Race & Ethnicity
The largest racial or ethnic group in New Plymouth is White (non-Hispanic), making up 76.6% of the population. Hispanic or Latino residents account for 15.5%.
Education
28.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 9% 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 92.2%.
Data Sources & Methodology
All demographic data for New Plymouth, 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.
Free data download: Get all Idaho city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of New Plymouth, Idaho?
New Plymouth, Idaho has a population of 1,794 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in New Plymouth, ID?
The median household income in New Plymouth is $65,375, which is 19% lower than the national median of $80,734.
What is the poverty rate in New Plymouth, ID?
The poverty rate in New Plymouth is 9.4%. This means approximately 163 residents live below the federal poverty line.
What is the racial makeup of New Plymouth, Idaho?
New Plymouth's population is 76.6% White, 0.0% Black, 15.5% Hispanic/Latino, and 0.9% Asian.
What is the median home value in New Plymouth, ID?
The median home value in New Plymouth is $277,500. The home-value-to-income ratio is 4.2x.
How educated is New Plymouth, Idaho?
28.9% of adults (25+) in New Plymouth hold a bachelor's degree or higher, and 5.3% hold a graduate or professional degree.