Dr. Donald J. Kurth was elected as mayor on November 7, 2006. Jack Lam is the city manager.
The city was incorporated in 1977, as a result of a merger among the unincorporated communities of Alta Loma, Cucamonga, and Etiwanda.
As of the census of 2000, there were 127,743 people, 40,863 households, and 31,832 families residing in the city. The population density was 1,317.0/km² (3,411.4/mi²). There were 42,134 housing units at an average density of 434.4/km² (1,125.2/mi²). The racial makeup of the city was 63.13% White,27.78% Hispanic or Latino of any race were, 13.25% from other races,8.48% African American, 6.39% Asian,5.41% from a biracial or multiracial background,0.72% Native American, and 0.27% Pacific Islanders of the population.
Rancho Cucamonga is fast becoming a racially diverse community and is a major real estate destination for middle-class African Americans, Hispanics and Asian Americans. Some housing tracts and gated communities tend to be more homogeneous in terms of race and ethnicity. Residents are more similar in terms of income, education and occupation, since Rancho Cucamonga is considered one of the most affluent cities in the Inland Empire.
There are 40,863 households, of which 44.7% have children under the age of 18. 60.2% of households consist of a married couple living together. 12.8% have a female householder with no husband present. 22.1% were non-families. 16.8% of all households are single-person and 4.1% have a person of 65 years of age or older. The average household size was 3.04 and the average family size was 3.44.
In the city, the population spread is as follows: 29.9% are under the age of 18, 9.9% are from 18 to 24, 33.2% are from 25 to 44, 21.0% are from 45 to 64, and 6.1% are 65 years of age or older. The median age is 32 years. For every 100 females there were 100.1 males. For every 100 females age 18 and over, there were 98.0 males.
The median income for a household in the city was $71,967 and the median income for a family was $78,428 (these figures had risen to $80,538 and $88,059 respectively as of a 2007 estimate). The per capita income for the city was $23,702. About 4.9% of families and 7.1% of the population were below the poverty line, including 7.6% of those under age 18 and 7.3% of those age 65 or over.
The 2008 population estimated by the California Department of Finance was 174,308.
(*): Population Figures for 1950 and 1970 were for the Cucamonga portion of the city only and the figures were tabulated prior to incorporation in 1977. The 1960 census data was not available
Source: U.S. Census Bureau
Rancho Cucamonga is served by Omnitrans Bus Service, Metrolink Train Service, and nearby Ontario International Airport. Interstate 15 and the relatively new 210 freeway extension run through Rancho Cucamonga as well as the historic U.S. Route 66.