Also notable, Longmont was declared an "All-America City" by the National Civic League in June 2006. The city was also named number 50 on the 2008 list of the top 100 places to live in the United States by Money Magazine.
As of the census of 2000, there were 71,093 people, 26,667 households, and 18,453 families residing in the city. The population density was 3,262.3 people per square mile (1,259.7/km²). There were 27,394 housing units at an average density of 1,257.0/sq mi (485.4/km²). The racial makeup of the city was:
There were 26,667 households out of which 36.9% had children under the age of 18 living with them, 54.6% were married couples living together, 10.1% had a female householder with no husband present, and 30.8% were non-families. 23.7% of all households were made up of individuals and 7.3% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.15.
In the city the population was spread out with 27.9% under the age of 18, 8.5% from 18 to 24, 33.1% from 25 to 44, 21.3% from 45 to 64, and 9.2% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 97.9 males. For every 100 females age 18 and over, there were 95.6 males.
The median income for a household in the city was $51,174, and the median income for a family was $58,037. Males had a median income of $40,978 versus $29,582 for females. The per capita income for the city was $23,409. About 5.9% of families and 7.8% of the population were below the poverty line, including 10.6% of those under age 18 and 6.2% of those age 65 or over.