As of the census of 2000, there were 105,167 people, 37,887 households, and 23,982 families residing in the city. The population density was 7,635.6 people per square mile (2,948.8/km²). There were 39,468 housing units at an average density of 2,865.5/sq mi (1,106.7/km²). The racial makeup of the city was 68.60% White, 16.52% Asian American, 4.21% African American, 0.24% Native American, 0.04% Pacific Islander, 6.48% from other races, and 3.92% from two or more races. Hispanic or Latino of any race were 14.01% of the population. Lowell is home to the second largest Cambodian population in the United States after Long Beach, California. There are an estimated 25,000 Cambodians living in the city of Lowell, but local community leaders estimate the number to be around 35,000 [2]. Lowell had the highest percentage of Cambodians of any place in the United States however, with 10.37% of its population being Cambodian.
There were 37,887 households out of which 34.0% had children under the age of 18 living with them, 40.1% were married couples living together, 17.4% had a female householder with no husband present, and 36.7% were non-families. 29.0% of all households were made up of individuals and 9.3% had someone living alone who was 65 years of age or older. The average household size was 2.67 and the average family size was 3.35.
In the city the population was spread out with 26.9% under the age of 18, 11.9% from 18 to 24, 32.5% from 25 to 44, 17.9% from 45 to 64, and 10.8% who were 65 years of age or older. The median age was 31 years. For every 100 females there were 97.1 males. For every 100 females age 18 and over, there were 94.1 males.
The median income for a household in the city was $39,192, and the median income for a family was $45,901. Males had a median income of $33,554 versus $27,399 for females. The per capita income for the city was $17,557. About 13.6% of families and 16.8% of the population were below the poverty line, including 23.2% of those under age 18 and 14.0% of those age 65 or over.
Lowell can be reached by automobile from Interstate 495, US Route 3, the Lowell Connector, and Massachusetts Routes 3A, 38, 110, 113, and 133.
For public transit, Lowell is served by the Lowell Regional Transit Authority, which provides fixed route bus services and paratransit services to the city and surrounding area. These connect at the Gallagher Transit Terminal to the Lowell Line of the MBTA commuter rail system, which connects Lowell to Boston. The terminal is also served by several intercity bus lines.
The Lowell National Historical Park provides a free streetcar shuttle between its various sites in the city center, using track formerly used to provide freight access to the city's mills.