Jefferson County, CO Demographics

Population - Employment - Households - Income / Financial - Housing - Education - Marital Status - Means of Transport to Work - Median Income by Zipcode

What is the population of Jefferson County?

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There are 741,402 residents in Jefferson County, with a median age of 39.9. Of this, 50.05% are males and 49.95% are females. US-born citizens make up 91.71% of the resident pool in Jefferson County, while non-US-born citizens account for 5.21%. Additionally, 3.08% of the population is represented by non-citizens.
A total of 621,143 people in Jefferson County currently live in the same house as they did last year.
Y-o-Y Change
Total Population 741,402 0.5%
Male Population 371,073 1.1%
Female Population 370,329 -0.1%
Male population 50.05%
Female population 49.95%
Y-o-Y Change
Median Age 39.9 -0.2%
Citizen US Born 679,961 0.6%
Citizen not US Born 38,611 2.1%
Not Citizen 22,830 -4.0%
Citizen US Born 91.71%
Citizen not US Born 5.21%
Not Citizen 3.08%
Y-o-Y Change
Moved from Abroad 2,921 -6.2%
Moved from Same County 42,462 -1.7%
Moved from Same State 45,645 -0.7%
Moved from Different State 21,770 -4.9%
Same House as Last Year 621,143 1.0%
Moved from Abroad 0.4%
Moved from Same County 5.79%
Moved from Same State 6.22%
Moved from Different State 2.97%
Same House as Last Year 84.63%

What are the employment statistics in Jefferson County?

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White-collar workers make up 84.54% of the working population in Jefferson County, while blue-collar employees account for 15.46%. There are also 47,485 entrepreneurs in Jefferson County (11.52% of the workforce); 277,410 workers employed in private companies (67.27%); and 54,841 people working in governmental institutions (13.3%).
Y-o-Y Change
White Collar 348,605 1.3%
Blue Collar 63,762 -1.4%
White Collar 84.54%
Blue Collar 15.46%
Y-o-Y Change
Self Employees 47,485 -0.5%
Private Companies 277,410 -0.1%
Governmental Workers 54,841 3.1%
Not for Profit Companies 32,631 8.2%
Self Employees 11.52%
Private Companies 67.27%
Governmental Workers 13.3%
Not for Profit Companies 7.91%

How many households are there in Jefferson County?

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There are a total of 304,825 households in Jefferson County, each made up of around 2 members. Family establishments represent 62.91% of these Jefferson County households, while non-family units account for the remaining 37.09%. Additionally, 27.05% of households have children and 72.95% of households are without children.
Y-o-Y Change
Total Households 304,825 4.0%
Average People Per Household 2 -2.5%
Family Households 191,779 3.2%
Non-family Households 113,046 5.6%
Family Households 62.91%
Non-family Households 37.09%
Y-o-Y Change
Households with Children 82,467 2.5%
Households without Children 222,358 4.6%
Households with Children 27.05%
Households without Children 72.95%

What are the median and average incomes in Jefferson County?

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The average annual household income in Jefferson County is $122,581, while the median household income sits at $100,373 per year. Residents aged 25 to 44 earn $107,898, while those between 45 and 64 years old have a median wage of $116,475. In contrast, people younger than 25 and those older than 65 earn less, at $52,215 and $67,975, respectively.
Y-o-Y Change
Average Household Income $122,581 3.5%
Median Household Income $100,373 9.9%
People below Poverty Level 49,047 0.6%
People above Poverty Level 675,638 0.6%

How many homeowners and renters are there in Jefferson County?

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There are 317,873 housing units in Jefferson County, and the median year in which these properties were built is 1979. Of the 304,825 occupied housing units in Jefferson County, 69.77% are owner-occupied, while 30.23% have renters living in them.
Meanwhile, properties bought with mortgages account for 71.75% of the units, and the median value of a home with a mortgage is $454,200. In general, housing costs reach $1,635 per month in Jefferson County.
Y-o-Y Change
Housing Units 317,873 4.4%
Median Year Built 1979 0.0%
Built in 1939 or Earlier 11,297 3.4%
Built between 1940 and 1949 6,096 2.8%
Built between 1950 and 1959 27,663 6.6%
Built between 1960 and 1969 38,301 3.5%
Built between 1970 and 1979 78,181 1.1%
Built between 1980 and 1989 50,898 4.2%
Built between 1990 and 1999 48,621 1.4%
Built between 2000 and 2009 32,573 4.1%
Built between 2010 and 2019 23,618 N/A
Built in 2020 or Later 625 N/A
Y-o-Y Change
Occupied Housing Units 304,825 4.0%
Owner Occupied 212,675 2.8%
Renter Occupied 92,150 7.1%
Owner Occupied 69.77%
Renter Occupied 30.23%
Y-o-Y Change
With Mortgage 152,585 2.7%
Without Mortgage 60,090 3.1%
Median Value with Mortgage $454,200 6.8%
Median Value without Mortgage $464,350 8.2%
Median Housing Costs per Month $1,635 2.8%
With Mortgage 71.75%
Without Mortgage 28.25%

What is the level of education in Jefferson County?

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Approximately 23.58% of the population in Jefferson County holds a high school degree (that's 146,022 residents), while 23.87% have attained a college certificate (147,815 locals) and 28.16% have a bachelor's degree (174,397 people).
Y-o-Y Change
No High School 9,389 -6.5%
Some High School 146,022 -1.3%
Some College 147,815 -2.4%
Associate Degree 44,296 1.4%
Bachelor's Degree 174,397 3.4%
Graduate Degree 97,406 6.3%
No High School 1.52%
Some High School 23.58%
Some College 23.87%
Associate Degree 7.15%
Bachelor's Degree 28.16%
Graduate Degree 15.73%

What is the marital status of Jefferson County residents?

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A total of 190,220 people in Jefferson County have never been married (which represents 30.23% of the total population), while 329,640 of them are wedded (52.38%). Separated and divorced residents are in smaller numbers, at 6,690 (1.06%) and 74,867 (11.9%), respectively.
Y-o-Y Change
Never Married 190,220 0.3%
Married 329,640 2.2%
Separated 6,690 -0.3%
Widowed 27,917 -4.8%
Divorced 74,867 -2.5%
Never Married 30.23%
Married 52.38%
Separated 1.06%
Widowed 4.44%
Divorced 11.9%

What are the most common means of transportation in Jefferson County?

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The top three means of transportation people in Jefferson County use to get to work are: car, bus or trolley bus and walking. A total of 318,745 residents commute by car, 7,236 prefer going to work by bus or trolley bus and 5,116 by walking.
Y-o-Y Change
Car 318,745 -3.2%
Bus or TrolleyBus 7,236 -18.1%
Railroad 1,489 0.7%
Ferryboat 139 531.8%
Bicycle 2,431 5.7%
Motorcycle 459 9.8%
TaxiCab 308 3.0%
Walk 5,116 -8.8%

What is the median and average household income in Jefferson County by zipcode?

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ZipCode Population Number of Households Median Income Average Income
80002 19,724 9,168 $77,893.00 $90,546.00
80003 36,790 14,298 $73,045.00 $91,183.00
80004 35,608 14,691 $86,144.00 $102,883.00
80005 28,909 11,210 $122,225.00 $139,002.00
80007 17,132 6,074 $146,796.00 $174,083.00
80020 53,210 20,733 $103,204.00 $123,572.00
80021 35,337 15,839 $86,665.00 $103,647.00
80031 36,835 14,219 $90,313.00 $114,168.00
80033 27,499 12,488 $72,621.00 $93,829.00
80123 46,816 19,186 $97,163.00 $127,328.00

Methodology & Disclaimers


Demographic data shown in this section was gathered from the latest U.S. Census Bureau release, the 2021 American Community Survey. The information is updated yearly, as soon as new data is made available by the US Census Bureau.
No representation, guarantee or warranty is made as to the accuracy or completeness of information modified or aggregated for specific neighborhoods and/or zip codes.

Zip codes included in this demographic data: 80002 80003 80004 80005 80007 80020 80021 80031 80033 80123 80127 80128 80135 80212 80214 80215 80226 80227 80228 80232 80235 80401 80403 80419 80425 80433 80439 80453 80454 80457 80465 80470