As of the census of 2000, there were 41,986 people, 17,865 households, and 10,540 families residing in the city. The population density was 1,362.6 people per square mile (526.2/km²). There were 18,784 housing units at an average density of 609.6/sq mi (235.4/km²). The racial makeup of the city was 91.78% White, 0.60% African American, 0.94% Native American, 0.76% Asian, 0.12% Pacific Islander, 3.81% from other races, and 1.99% from two or more races. Hispanic or Latino of any race were 10.86% of the population.
There were 17,865 households out of which 25.5% had children under the age of 18 living with them, 46.1% were married couples living together, 9.4% had a female householder with no husband present, and 41.0% were non-families. 33.2% of all households were made up of individuals and 13.8% had someone living alone who was 65 years of age or older. The average household size was 2.23 and the average family size was 2.84.
In the city the population was spread out with 21.2% under the age of 18, 11.9% from 18 to 24, 26.3% from 25 to 44, 22.8% from 45 to 64, and 17.9% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 95.1 males. For every 100 females age 18 and over, there were 92.6 males.
The population figures are for Grand Junction only; the city abuts smaller towns and unincorporated county areas which contribute to area commerce.
The median income for a household in the city was $33,152, and the median income for a family was $43,851. Males had a median income of $31,685 versus $22,804 for females. The per capita income for the city was $19,692. About 7.5% of families and 11.9% of the population were below the poverty line, including 11.8% of those under age 18 and 9.0% of those age 65 or over.
Grand Junction Regional Airport (formerly Walker Field Airport) serves as the major airport in the area. The airport is located in north Grand Junction on Horizon Drive. Two-way flights to Denver, Salt Lake City, Las Vegas, Dallas and Phoenix are available for air travelers.
Amtrak, the national passenger rail system, provides service to Grand Junction Station, operating its California Zephyr daily in both directions between Chicago and Emeryville, California across the bay from San Francisco.
The Grand Valley Transit (GVT) is the local bus system which also services routes to Palisade and Fruita,Colorado.