Longmont, Colorado Population 2021

98,711
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Longmont is a city located in Boulder County and Weld County Colorado. With a 2020 population of 98,711, it is the 13th largest city in Colorado and the 332nd largest city in the United States . Longmont is currently growing at a rate of 0.74% annually and its population has increased by 14.42% since the most recent census, which recorded a population of 86,270 in 2010. Longmont reached it's highest population of 98,711 in 2021. Spanning over 30 miles, Longmont has a population density of 3,435 people per square mile.

The average household income in Longmont is $91,611 with a poverty rate of 9.59%. The median rental costs in recent years comes to $1,340 per month, and the median house value is $362,500. The median age in Longmont is 38.1 years, 37.2 years for males, and 39.5 years for females.

Population Growth in Longmont

The city of Longmont has seen continuous growth throughout its history, with recent estimates reflecting a 7.6% population increase since the last census taken in 2010. The educational and employment opportunities, as well as its reputation as one of the safest cities in the state of Colorado, are sure to help drive further population growth in Longmont.

Longmont Demographics

According to the most recent ACS, the racial composition of Longmont was:

  • White: 89.28%
  • Asian: 3.12%
  • Other race: 2.89%
  • Two or more races: 2.64%
  • Black or African American: 1.14%
  • Native American: 0.85%
  • Native Hawaiian or Pacific Islander: 0.08%
The current population of Longmont, Colorado is 98,711 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 96,536.The last official US Census in 2010 recorded the population at 86,270.

Longmont, Colorado Population 2021

Population by Race

Race Population Percentage
White84,32089.28%
Asian2,9483.12%
Some Other Race2,7292.89%
Two or More Races2,4962.64%
Black or African American1,0761.14%
American Indian and Alaska Native8000.85%
Native Hawaiian and Other Pacific Islander760.08%
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Longmont Population by Race

Longmont Population Pyramid $2021

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Longmont Median Age

38.1


Total

37.2


Male

39.5


Female

Longmont Adults

There are 71,968 adults, (13,722 of whom are seniors) in Longmont.

Longmont Age Dependency

62.1

Age Dependency Ratio

23.6

Old Age Dependency Ratio

38.6

Child Dependency Ratio

Longmont Sex Ratio

Female

48,510

51.36%

Male

45,935

48.64%

Longmont Population by Age

Longmont Renter vs Owner Occupied by Household Type

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Longmont Household Types

Type Owner Renter
Married76%24%
All60.7%39.3%
Male49.6%50.4%
Non Family48%52%
Female39.7%60.3%

60.7%

Rate of Home Ownership

Longmont Households and Families

Type Count Average Size Owned
All36,7842.5560.7
Married17,8533.1776
Non Family12,8901.2748
Female4,4253.539.7
Male1,6163.3549.6

3.14

Average Family Size

2.55

Average Household Size

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Longmont Households by Type

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Education Attained Count Percentage
Less Than 9th Grade2,5033.90%
9th to 12th Grade3,7815.89%
High School Graduate12,08318.81%
Some College12,98220.21%
Associates Degree5,3288.29%
Bachelors Degree17,32526.97%
Graduate Degree10,24015.94%
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Longmont Educational Attainment by Sex (over 25)

Longmont Educational Attainment by Race

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Race Total High School Bachelors
White47,85146,49423,489
Hispanic12,3387,7561,975
Asian2,1001,9541,376
Other Race1,584948197
2+ Races1,124987494
Black837685224
Native American48843156
Islander565616

The highest rate of high school graduation is among islander people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 65.52%.

Longmont Educational Attainment by Race

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Name Average Male Female
Overall$43,363$52,706$35,467
Less Than 9th Grade$28,877$31,529$25,183
High School Graduate$32,141$38,036$24,630
Some College$38,259$45,910$33,468
Bachelors Degree$56,810$73,859$43,831
Graduate Degree$67,980$95,877$51,132

$43,363

Average Earnings

$52,706

Average Male

$35,467

Average Female

Longmont Earnings by Educational Attainment

Longmont Language by Age

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Longmont Language

79.44% of Longmont residents speak only English, while 20.56% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 16.17% of the population.

Longmont Language

Longmont Poverty by Race

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Name Total In Poverty Poverty Rate
White63,8334,3706.85%
Hispanic23,5304,21717.92%
Other2,72944316.23%
Black1,07618517.19%
Multiple2,4801676.73%
Native80013016.25%
Asian2,931872.97%

9.59%

Overall Poverty Rate

8.83%

Male Poverty Rate

10.31%

Female Poverty Rate

Poverty in Longmont

The race most likely to be in poverty in Longmont is Hispanic, with 17.92% below the poverty level.

The race least likely to be in poverty in Longmont is Asian, with 2.97% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.01%. Among those working part-time, it was 11.23%, and for those that did not work, the poverty rate was 16.64%.

Longmont Poverty

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Name Poverty
Less Than 9th Grade19.94%
High School11.56%
Some College7.89%
Bachelors or Greater3.11%

Longmont Poverty Rate by Education

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Rate Poverty
Female Unemployed23.62%
Male Unemployed21.98%
Female Employed4.93%
Male Employed3.63%

Longmont Poverty Rate by Employment Status and Sex

Longmont Income by Household Type

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Name Median Mean
Households$74,242$91,611
Families$90,173$105,849
Married Families$105,263$120,890
Non Families$45,284$60,722
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Income by Household Type

Longmont Marital Status

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Marriage Rates

50.1%

Overall Marriage Rate

51.5%

Male Marriage Rate

48.9%

Female Marriage Rate

Longmont Married by Age and Sex

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Longmont Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.

Longmont Marital Status by Race

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Longmont Marital Status

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5,051

Number of Veterans

4,560

Male Veterans

491

Female Veterans

War Veterans
Vietnam1,829
First Gulf War903
Second Gulf War645
Korea430
World War II188

Longmont Veterans by War

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Age Group Veterans
65 to 741,347
75+1,300
35 to 541,166
55 to 64921
18 to 34317

Longmont Veterans by Age

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Name Veterans % of Total
White4,6517.18%
Hispanic4422.97%
Black12414.19%
2+ Races1188.23%
Asian622.74%
Other Race603.17%
Native American365.59%

Longmont Veterans by Race

Longmont Veterans by Education

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7.25%

Veteran Poverty Rate

24.84%

Veteran Disability Rate

Longmont Veterans by Education

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69.8%

Labor Force Participation

66.4%

Employment Rate

5%

Unemployment Rate

Longmont Employment by Age

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Longmont Employment by Race

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Longmont Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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36.58%

Born in Longmont

88.29%

Native Born

11.71%

Foreign Born

6.95%

Non Citizen

4.77%

Naturalized

Place of Birth

88.29% of Longmont residents were born in the United States, with 36.58% having been born in Colorado. 6.95% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Longmont Place of Birth

Year Population Growth Annual Growth Rate
202198,7117250.74%
202097,9867250.75%
201997,2617250.75%
201896,5361,8992.01%
201794,6371,3681.47%
201693,2699891.07%
201592,2801,6571.83%
201490,6234020.45%
201390,2211,3181.48%
201288,9031,2121.38%
201187,6911,2511.45%
201086,44015,3471.97%
200071,09319,5383.27%
199051,5558,6131.84%
198042,94219,7336.35%
197023,20911,7207.28%
196011,4893,3903.56%
19508,0996930.90%
19407,4061,3772.08%
19306,0291810.31%
19205,8481,5923.23%
19104,2562,0566.82%
19002,2000.00%

Longmont Population by Year