Longmont Flag

Longmont

County:
Boulder County
County Seat:
No
Area (mi²):
29.038
State:
Colorado

Longmont is a city located in Boulder County, Colorado. Longmont has a 2025 population of 99,971 . Longmont is currently growing at a rate of 0.15% annually and its population has increased by 0.77% since the most recent census, which recorded a population of 99,206 in 2020.

The average household income in Longmont is $112,684 with a poverty rate of 8.56%. The median age in Longmont is 40.1 years: 38.9 years for males, and 41.8 years for females. For every 100 females there are 98.4 males.

100K
Total Population
3,443
Density (mi²)
153 0.15%
Growth

Longmont Population

Longmont Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Longmont includes 76.67% White, 5.19% other race, and smaller percentages for Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White (76.67%)

Two or more races (13.63%)

Other race (5.19%)

Asian (2.98%)

Black or African American (1.01%)

Native American (0.43%)

Native Hawaiian or Pacific Islander (0.09%)

Race
Population
Percentage (of total)
White75,86776.67%
Two or more races13,48413.63%
Other race5,1365.19%
Asian2,9532.98%
Black or African American1,0031.01%
Native American4260.43%
Native Hawaiian or Pacific Islander890.09%

Longmont Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Longmont's average per capita income is $55,018. Household income levels show a median of $89,724. The poverty rate stands at 8.56%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$128,451$151,221
Families$114,168$134,850
Households$89,724$112,684
Non Families$55,325$74,318

$55,018

Average Income

$89,724

Median Household Income

8.56%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)