Waltham is home to Brandeis University and Bentley College. It is called Watch City because of its association with the watch industry.
The name of the city is pronounced with the primary stress on the first syllable and secondary stress on the second syllable, although the name of the Waltham watch was pronounced with accent only on the first syllable.
According to the United States Census Bureau, the city has a total area of 35.2 km² (13.6 mi²). 32.9 km² (12.7 mi²) of it is land and 2.4 km² (0.9 mi²) of it is water. The total area is 6.69% water.
As of the census of 2000, there are 59,226 people, 23,207 households, and 12,462 families residing in the city. The population density is 1,800.6/km² (4,663.4/mi²). There are 23,880 housing units at an average density of 726.0/km² (1,880.3/mi²). The racial makeup of the city is 82.98% White, 4.41% African American, 0.16% Native American, 7.29% Asian, 0.06% Pacific Islander, 3.20% from other races, and 1.89% from two or more races. 8.49% of the population are Hispanic or Latino of any race.
There are 23,207 households out of which 20.3% have children under the age of 18 living with them, 41.3% are married couples living together, 8.9% have a female householder with no husband present, and 46.3% are non-families. 34.2% of all households are made up of individuals and 10.0% have someone living alone who is 65 years of age or older. The average household size is 2.29 and the average family size is 3.01.
In the city the population is spread out with 15.5% under the age of 18, 16.8% from 18 to 24, 34.4% from 25 to 44, 20.2% from 45 to 64, and 13.1% who are 65 years of age or older. The median age is 34 years. For every 100 females there are 97.2 males. For every 100 females age 18 and over, there are 95.6 males.
The median income for a household in the city is $54,010, and the median income for a family is $64,595. Males have a median income of $42,324 versus $33,931 for females. The per capita income for the city is $26,364. 7.0% of the population and 3.6% of families are below the poverty line. Out of the total people living in poverty, 4.8% are under the age of 18 and 8.4% are 65 or older.