|Clark Fork, Idaho|
|— City —|
Location in Bonner County and the state of Idaho
|- Total||1.0 sq mi (2.5 km2)|
|- Land||1.0 sq mi (2.5 km2)|
|- Water||0.0 sq mi (0.0 km2)|
|Elevation||2,090 ft (637 m)|
|- Density||538.8/sq mi (208.0/km2)|
|Time zone||Pacific (PST) (UTC-8)|
|- Summer (DST)||PDT (UTC-7)|
|GNIS feature ID||0396290|
Clark Fork is located at .(48.147180, -116.178270)
According to the United States Census Bureau, the city has a total area of 1.0 square miles (2.5 km²), all of it land.
As of the census of 2000, there were 530 people, 238 households, and 138 families residing in the city. The population density was 538.8 people per square mile (208.8/km²). There were 286 housing units at an average density of 290.7/sq mi (112.7/km²). The racial makeup of the city was 93.96% White, 0.57% African American, 1.32% Native American, 0.19% Asian, 1.70% from other races, and 2.26% from two or more races. Hispanic or Latino of any race were 3.02% of the population.
There were 238 households out of which 24.4% had children under the age of 18 living with them, 47.5% were married couples living together, 8.0% had a female householder with no husband present, and 42.0% were non-families. 37.4% of all households were made up of individuals and 16.4% had someone living alone who was 65 years of age or older. The average household size was 2.22 and the average family size was 2.94.
In the city the population was spread out with 24.7% under the age of 18, 4.9% from 18 to 24, 28.3% from 25 to 44, 24.0% from 45 to 64, and 18.1% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 101.5 males. For every 100 females age 18 and over, there were 95.6 males.
The median income for a household in the city was $22,031, and the median income for a family was $28,472. Males had a median income of $28,036 versus $21,042 for females. The per capita income for the city was $13,979. About 15.3% of families and 20.8% of the population were below the poverty line, including 19.0% of those under age 18 and 20.2% of those age 65 or over.