Winchester, Idaho Demographics & Population 2026

A note before these figures: with a population of 302, Winchester'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

Winchester is a small community located in Idaho, within Lewis County. The total population is 302. It ranks as the 174th most populous out of 232 Census-designated places in Idaho.

Age Demographics

The median age in Winchester is 54.7 years. This is 47% higher than the state median of 37.3 years. 22.2% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Winchester is $45,208. This is 42% lower than the state median of $77,800. It is also 44% lower than the national median of $80,734. The poverty rate stands at 27.2%. This is 156% 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 survey records no unemployed residents in Winchester, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $225,000. Housing costs are 46% lower than the state median of $418,600. The home-value-to-income ratio is 5.0x. 65.5% of occupied housing units are owner-occupied. This homeownership rate is 9% lower than the state average of 72.1%.

Race & Ethnicity

Winchester has a predominantly White (non-Hispanic) population, comprising 85.8% of all residents. Hispanic or Latino residents account for 6.0%. The Hispanic or Latino population (6.0%) is well below the state average of 13.7%. The Asian population (0.7%) is well below the state average of 1.3%.

Education

17.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 45% 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 85.7%.

Data Sources & Methodology

All demographic data for Winchester, 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.