As of the census of 2000, there were 5,989 people, 2,489 households, and 1,607 families residing in the city. The population density was 793.8 people per square mile (306.7/km²). There were 3,065 housing units at an average density of 406.2/sq mi (156.9/km²). The racial makeup of the city was 75.87% White, 1.29% African American, 1.39% Native American, 1.20% Asian, 0.22% Pacific Islander, 17.10% from other races, and 2.94% from two or more races. Hispanic or Latino of any race were 51.41% of the population.
There were 2,489 households out of which 29.8% had children under the age of 18 living with them, 45.4% were married couples living together, 15.3% had a female householder with no husband present, and 35.4% were non-families. 31.7% of all households were made up of individuals and 14.7% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 2.93.
In the city the population was spread out with 26.0% under the age of 18, 7.5% from 18 to 24, 24.2% from 25 to 44, 24.8% from 45 to 64, and 17.5% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 90.9 males. For every 100 females age 18 and over, there were 86.8 males.
The median income for a household in the city was $22,560, and the median income for a family was $27,468. Males had a median income of $25,342 versus $18,568 for females. The per capita income for the city was $14,786. About 19.1% of families and 24.8% of the population were below the poverty line, including 29.5% of those under age 18 and 16.7% of those age 65 or over.