Weldon is a census-designated place (CDP) in Kern County, California, United States. It sits at the southwest tip of Lake Isabella. Weldon is located 9 miles (14 km) east-southeast of Wofford Heights, at an elevation of 2654 feet (809 m). The population was 2,387 at the 2000 census.
According to the United States Census Bureau, the CDP has a total area of 26.7 square miles (69.1 km²), all of it land.
As of the census of 2000, there were 2,387 people, 1,087 households, and 703 families residing in the CDP. The population density was 89.5 people per square mile (34.6/km²). There were 1,441 housing units at an average density of 54.0/sq mi (20.9/km²). The racial makeup of the CDP was 91.33% White, 0.42% Black or African American, 3.94% Native American, 0.46% Asian, 0.13% Pacific Islander, 0.88% from other races, and 2.85% from two or more races. 6.24% of the population were Hispanic or Latino of any race.
There were 1,087 households out of which 19.2% had children under the age of 18 living with them, 51.2% were married couples living together, 9.8% had a female householder with no husband present, and 35.3% were non-families. 30.6% of all households were made up of individuals and 18.6% had someone living alone who was 65 years of age or older. The average household size was 2.20 and the average family size was 2.73.
In the CDP the population was spread out with 20.3% under the age of 18, 2.8% from 18 to 24, 17.6% from 25 to 44, 28.3% from 45 to 64, and 31.0% who were 65 years of age or older. The median age was 52 years. For every 100 females there were 97.3 males. For every 100 females age 18 and over, there were 93.4 males.
The median income for a household in the CDP was $22,857, and the median income for a family was $26,500. Males had a median income of $35,573 versus $20,208 for females. The per capita income for the CDP was $15,243. About 14.9% of families and 18.7% of the population were below the poverty line, including 23.7% of those under age 18 and 13.6% of those age 65 or over.