Jefferson County, Colorado's estimated 2024 population is 576,921 with a growth rate of 0.1% in the past year according to the most recent United States census data. Jefferson County, Colorado is the 4th largest county in Colorado. The 2010 population was 535,567 and has seen a growth of 7.72% since that time.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 579,696 | 555 | 0.1% |
| 2028 | 579,141 | 555 | 0.1% |
| 2027 | 578,586 | 555 | 0.1% |
| 2026 | 578,031 | 555 | 0.1% |
| 2025 | 577,476 | 555 | 0.1% |
| 2024 | 576,921 | 555 | 0.1% |
| 2023 | 576,366 | 555 | 0.1% |
| 2022 | 575,811 | -4,892 | -0.84% |
| 2021 | 580,703 | -2,378 | -0.41% |
| 2020 | 583,081 | 281 | 0.05% |
| 2019 | 582,800 | 2,773 | 0.48% |
| 2018 | 580,027 | 3,986 | 0.69% |
| 2017 | 576,041 | 4,218 | 0.74% |
| 2016 | 571,823 | 6,583 | 1.16% |
| 2015 | 565,240 | 6,141 | 1.1% |
| 2014 | 559,099 | 6,857 | 1.24% |
| 2013 | 552,242 | 5,506 | 1.01% |
| 2012 | 546,736 | 6,154 | 1.14% |
| 2011 | 540,582 | 5,015 | 0.94% |
| 2010 | 535,567 | 0 | 0% |
| 1990 | 438,430 | 66,677 | 17.94% |
| 1980 | 371,753 | 138,722 | 59.53% |
| 1970 | 233,031 | 105,511 | 82.74% |
| 1960 | 127,520 | 71,833 | 128.99% |
| 1950 | 55,687 | 24,962 | 81.24% |
| 1940 | 30,725 | 8,915 | 40.88% |
| 1930 | 21,810 | 7,410 | 51.46% |
| 1920 | 14,400 | 169 | 1.19% |
| 1910 | 14,231 | 4,925 | 52.92% |
| 1900 | 9,306 | 856 | 10.13% |
| 1890 | 8,450 | 1,646 | 24.19% |
| 1880 | 6,804 | 4,414 | 184.69% |
| 1870 | 2,390 | -577,306 | -99.59% |
White
Two or more races
Asian
Other race
Black or African American
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 238,372 | 2.4 | 70.6 | 29.4 |
| Married | 120,938 | 2.97 | 86 | 14 |
| Non Family | 87,156 | 1.34 | 53.9 | 46.1 |
| Female | 19,167 | 3.17 | 57 | 43 |
| Male | 11,111 | 3.1 | 57.1 | 42.9 |
2.94
Average Family Size
2.4
Average Household Size
70.6%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among islander people with a rate of 98.26%.
The highest rate of bachelors degrees is among asian people with a rate of 53.25%.
All
Male
Female
$61,450
Average Earnings
$71,686
Average Male
$52,569
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
90.03% of Jefferson County, Colorado residents speak only English, while 9.97% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 5.81% of the population.
rate
6.67%
Overall Poverty Rate
6.16%
Male Poverty Rate
7.19%
Female Poverty Rate
The race most likely to be in poverty in Jefferson County, Colorado is Black, with 19.75% below the poverty level.
The race least likely to be in poverty in Jefferson County, Colorado is Islander, with 5.19% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.22%. Among those working part-time, it was 10.1%, and for those that did not work, the poverty rate was 13.39%.
Married
Widowed
Divorced
Separated
NeverMarried
52.0%
Overall Marriage Rate
52.5%
Male Marriage Rate
51.5%
Female Marriage Rate
male
female
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.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
5.42%
Veteran Poverty Rate
24.3%
Veteran Disability Rate
LaborForceParticipation
69.4%
Labor Force Participation
66.6%
Employment Rate
3.9%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
45.6%
Born in Jefferson County, Colorado
93.84%
Native Born
6.16%
Foreign Born
2.63%
Non Citizen
3.53%
Naturalized
93.84% of Jefferson County, Colorado residents were born in the United States, with 45.6% having been born in Colorado. 2.63% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.