Westminster is a Home Rule Municipality in Adams and Jefferson counties in the U.S. state of Colorado. Westminster is a northwest suburb of Denver. The Westminster Municipal Center is located 9 miles (14 km) north-northwest of the Colorado State Capitol. As of the 2010 census the population of Westminster was 106,114, and as of 2018 the estimated population was 113,479.</ref> Westminster is the seventh most populous city in Colorado and the 237th most populous city in the United States. Westminster is a part of the Denver-Aurora-Lakewood, CO Metropolitan Statistical Area and the Denver-Aurora-Boulder Combined Statistical Area. In July 2006, it was ranked as the 24th best place to live in the US by Money magazine.
Westminster is located in western Adams County and northeastern Jefferson County at 39°52′N 105°03′W / 39.867°N 105.050°W / 39.867; -105.050 (39.862, -105.048). It is bordered to the north by Broomfield, to the northeast by Thornton, to the east by Northglenn and Federal Heights, to the southeast by Sherrelwood, Twin Lakes and Berkley, and to the south by Arvada.
According to the United States Census Bureau, Westminster has a total area of 34.05 square miles (88.19 km), of which 31.73 square miles (82.18 km) are land and 2.32 square miles (6.01 km), or 6.81%, are water.
As of the census of 2000, there were 100,940 people, 38,343 households, and 26,034 families residing in the city. The population density was 3,203.9 people per square mile (1,236.9/km²). There were 39,318 housing units at an average density of 1,248.0 per square mile (481.8/km²). The racial makeup of the city was 84.19% White, 1.23% African American, 0.74% Native American, 5.48% Asian, 0.08% Pacific Islander, 5.52% from other races, and 2.76% from two or more races. Hispanic or Latino of any race were 15.23% of the population.
There were 38,343 households out of which 35.7% had children under the age of 18 living with them, 53.6% were married couples living together, 9.6% had a female householder with no husband present, and 32.1% were non-families. 23.7% of all households were made up of individuals and 4.5% had someone living alone who was 65 years of age or older. The average household size was 2.62 and the average family size was 3.15.
In the city, the population was spread out with 26.9% under the age of 18, 9.6% from 18 to 24, 36.0% from 25 to 44, 21.0% from 45 to 64, and 6.5% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 100.2 males. For every 100 females age 18 and over, there were 98.9 males.
The median income for a household in the city was $56,323, and the median income for a family was $63,776. Males had a median income of $41,539 versus $31,568 for females. The per capita income for the city was $25,482. About 3.1% of families and 4.7% of the population were below the poverty line, including 5.1% of those under age 18 and 6.3% of those age 65 or over.
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