Clark Fork, Idaho Demographics & Population 2026

A note before these figures: with a population of 990, Clark Fork'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

Clark Fork is a small community located in Idaho, within Bonner County. The total population is 990. It ranks as the 102nd most populous out of 232 Census-designated places in Idaho.

Age Demographics

The median age in Clark Fork is 40.1 years. This is 8% higher than the state median of 37.3 years.

Economy, Income & Housing

The median household income in Clark Fork is $63,813. This is 18% lower than the state median of $77,800. It is also 21% lower than the national median of $80,734. The poverty rate stands at 23.4%. This is 121% 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 12.6%. This is 237% higher than the state rate of 3.7%. The median home value is $251,700. Housing costs are 40% lower than the state median of $418,600. The home-value-to-income ratio is 3.9x. 56.1% of occupied housing units are owner-occupied. This homeownership rate is 22% lower than the state average of 72.1%.

Race & Ethnicity

Clark Fork has a predominantly White (non-Hispanic) population, comprising 90.6% of all residents. Hispanic or Latino residents account for 1.4%. The Hispanic or Latino population (1.4%) is well below the state average of 13.7%.

Education

6.3% 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 80% 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 87.6%.

Data Sources & Methodology

All demographic data for Clark Fork, 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.