As of the censusGR2 of 2000, there are 52,457 people, 20,171 households, and 13,252 families residing in the city. The population density is 141/km² (366/mi²). There are 21,283 housing units at an average density of 57/km² (148/mi²). The racial makeup of the city is 85.30% White, 1.80% Black or African American, 2.40% Native American, 1.77% Asian, 0.14% Pacific Islander, 6.46% from other races, and 2.12% from two or more races. 14.23% of the population are Hispanic or Latino of any race.

There are 20,171 households, out of which 29.80% have children under the age of 18 living with them, 50.00% are married couples living together, 11.00% have a female householder with no husband present, and 34.30% are non-families. 27.80% of all households are made up of individuals and 11.00% have someone living alone who is 65 years of age or older. The average household size is 2.44 and the average family size is 2.97.

The city’s age distribution is: 23.40% under the age of 18, 7.90% from 18 to 24, 28.90% from 25 to 44, 24.90% from 45 to 64, and 14.90% who are 65 years of age or older. The median age is 39 years. For every 100 females there are 106.90 males. For every 100 females age 18 and over, there are 108.20 males.

The median income for a household in the city is $41,809, and the median income for a family is $49,570. Males have a median income of $35,296 versus $27,418 for females. The per capita income for the city is $20,943. 10.00% of the population and 6.90% of families are below the poverty line. Out of the total population, 13.70% of those under the age of 18 and 5.80% of those 65 and older are living below the poverty line.