Longmont demographics profile

Population density (sq mi)3,2955091
Median age36.936.437.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)56%56%55%
Families w/ Kids under 1847%45%43%
Speak English79%83%79%
Speak Spanish17%12%13%
Longmont, CO has a population of 90,719 and is the 360th largest city in the United States. The population density is 3,295 per sq mi which is 6519% higher than the Colorado average and 3537% higher than the national average. The median age in Longmont is 37 which is approximately 1% higher than the Colorado average of 36. In Longmont, 56% of the population over 15 years of age are married, 79% speak English and 17% speak Spanish. 40% of Longmont residents were born in Colorado, 47% were born out of state, 1% were born outside of the United States and 12% were foreign born.
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Did you know?

  • The population density in Longmont is 6519% higher than Colorado.
  • The median age in Longmont is 1% higher than Colorado.
  • In Longmont 86.89% of the population is White.
  • In Longmont 1.26% of the population is Black or African American.
  • In Longmont 2.68% of the population is Asian.

Compare Longmont, CO Demographics To Other Cities

Longmont population breakdown by race

Black or African American1.26%4.09%12.63%
American Indian1.24%0.94%0.82%
Native Hawaiian0.11%0.14%0.18%
Mixed race2.68%3.43%3.06%
Other race5.13%4.18%4.75%
In Longmont, 25.9% of people are of Hispanic or Latino origin.
Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

Languages spoken

Place of birth by citizenship

Household income distribution

Source of income

Longmont age breakdown

Marital status

Age of children in married couples

Source: The Longmont, CO demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).
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