Brigham City is a city in Box Elder County, Utah, United States. The population was 17,899 at the 2010 census. It is the county seat of Box Elder County. It lies on the western slope of the Wellsville Mountains, a branch of the Wasatch Range at the western terminus of Box Elder Canyon. Brigham City saw most of its growth during the 1950s and 1960s, but has seen a struggling economy and stagnating growth since then. It is near the headquarters of ATK Thiokol, the company that created the solid rocket boosters for the Space Shuttle.
Brigham City lies in southeastern Box Elder County on the western slopes of the Wellsville Mountains, a branch of the Wasatch Range, at the western end of Box Elder Canyon. Brigham City is generally considered to be the northern end of the Wasatch Front. To the west is a large, flat region of desert scrub, eventually giving way to marshlands on the edge of the Great Salt Lake. Interstates 15 and 84 pass to the west of the city together. U.S. 89 approaches from the south and U.S. 91 comes from I-15/84 to the west. They intersect in the city, climbing through Box Elder Canyon together. Two routes of the Utah Transit Authority’s bus system also provide access to Brigham City from Ogden, and it also has a Greyhound bus stop. It is planned to be the northern terminus of the FrontRunner commuter rail line by 2020.
According to the United States Census Bureau, the city has a total area of 24.2 square miles (62.6 km), of which 23.8 square miles (61.7 km) is land and 0.35 square miles (0.9 km), or 1.40%, is water. It lies at an elevation of 4,315 feet (1,315 m).
The climate of Brigham City is generally similar to that of the rest of the Wasatch Front, though slightly cooler. According to the Köppen climate classification, Brigham City has a humid continental climate (Dfb). Snow is heavy in winter with an annual average of 50.0 inches (127 cm), although it is too far north to receive lake-effect snow. Precipitation is light, averaging 18.46 inches (469 mm) annually. Summers are hot, but humidity remains low and overnight temperatures are cool, and winters are cold (but rarely frigid). April is the wettest month, while July is the driest.
As of the census of 2000, there were 17,411 people, 5,526 households, and 4,409 families residing in the city. The population density was 1,216.4 people per square mile (469.8/km²). There were 5,838 housing units at an average density of 407.9 per square mile (157.5/km²). The racial makeup of the city was 91.26% White, 0.24% African American, 1.63% Native American, 0.77% Asian, 0.10% Pacific Islander, 4.07% from other races, and 1.93% from two or more races. Hispanic or Latino of any race were 7.67% of the population.
There were 5,526 households out of which 44.7% had children under the age of 18 living with them, 66.4% were married couples living together, 9.7% had a female householder with no husband present, and 20.2% were non-families. 18.0% of all households were made up of individuals and 8.2% had someone living alone who was 65 years of age or older. The average household size was 3.09 and the average family size was 3.53.
In the city, the age distribution of the population shows 34.2% under the age of 18, 11.1% from 18 to 24, 25.2% from 25 to 44, 17.4% from 45 to 64, and 12.1% who were 65 years of age or older. The median age was 29 years. For every 100 females, there were 100.9 males. For every 100 females age 18 and over, there were 96.9 males.
The median income for a household in the city was $42,335, and the median income for a family was $46,891. Males had a median income of $39,271 versus $22,061 for females. The per capita income for the city was $15,503. About 7.3% of families and 8.7% of the population were below the poverty line, including 9.7% of those under age 18 and 7.1% of those age 65 or over.