The Town of Walden is a Statutory Town that is the county seat of, and the only incorporated municipality in, Jackson County, Colorado, United States. It is situated in the center of a large open valley called North Park. People from Walden and the surrounding area refer to themselves as "North Parkers". The town population was 734 at the 2000 census. The town sits at an elevation of 8099 feet (2469 meters) and is the only still incorporated town in the county. It was established in 1889 and was incorporated 2 December 1890. It briefly was known as Sagebrush, but was renamed Walden to honor Marcus Aurelius Walden, a local area postmaster.
There were 330 households out of which 29.7% had children under the age of 18 living with them, 44.8% were married couples living together, 12.1% had a female householder with no husband present, and 37.0% were non-families. 34.5% of all households were made up of individuals and 12.1% had someone living alone who was 65 years of age or older. The average household size was 2.21 and the average family size was 2.82.
In the town the population was spread out with 25.9% under the age of 18, 6.8% from 18 to 24, 25.5% from 25 to 44, 26.0% from 45 to 64, and 15.8% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 98.4 males. For every 100 females age 18 and over, there were 99.3 males.
The median income for a household in the town was $29,313, and the median income for a family was $34,423. Males had a median income of $31,111 versus $18,611 for females. The per capita income for the town was $16,964. About 14.2% of families and 20.3% of the population were below the poverty line, including 35.3% of those under age 18 and 8.8% of those age 65 or over.