According to the United States Census Bureau, the city has a total area of 3.9 square miles (10.0 km²), of which, 3.8 square miles (9.8 km²) of it is land and 0.1 square miles (0.3 km²) of it (2.84%) is water.
As of the census of 2000, there were 3,522 people, 1,471 households, and 939 families residing in the city. The population density was 933.9 people per square mile (360.7/km²). There were 2,058 housing units at an average density of 545.7/sq mi (210.8/km²). The racial makeup of the city was 85.69% White, 0.11% African American, 1.53% Native American, 0.48% Asian, 0.11% Pacific Islander, 9.23% from other races, and 2.84% from two or more races. Hispanic or Latino of any race were 14.45% of the population.
There were 1,471 households out of which 29.6% had children under the age of 18 living with them, 49.8% were married couples living together, 10.1% had a female householder with no husband present, and 36.1% were non-families. 30.5% of all households were made up of individuals and 14.8% 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 25.3% under the age of 18, 6.2% from 18 to 24, 24.6% from 25 to 44, 25.7% from 45 to 64, and 18.2% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 92.8 males. For every 100 females age 18 and over, there were 88.4 males.
The median income for a household in the city was $28,047, and the median income for a family was $33,662. Males had a median income of $31,900 versus $21,397 for females. The per capita income for the city was $16,511. About 17.3% of families and 20.9% of the population were below the poverty line, including 31.3% of those under age 18 and 12.5% of those age 65 or over.