The population of Jefferson county is estimated at 570,839. In 2017 there were 6,073 births and 4,418 deaths in Jefferson county. Jefferson county has 120,887 housing units that are owned with a mortgage or a loan, 33,254 that are owned free and clear and 64,019 that are renter occupied.

  The gracious residents of Jefferson County filed 293,820 federal tax returns in 2017. This amount represents 11.1% of all Colorado filings and 0.197% of the entire nation. Jefferson had an impressive combined total federal tax liability of $3,834,891,000 on earned income of $23,856,589,000. Other notable statistics from Jefferson County were 8,240 unemployment claims which collected a total of $44,652,000 and 97,130 charitable contributions valued at $416,232,000. 105,670 filings from Jefferson County paid a combined total of $318,606,000 in property taxes and 96,020 filings paid $900,144,000 on mortgage interest costs.

  In 2010 Jefferson county had 335 religious congregations with an estimated 190,765 members.
43.1% of the Jefferson population has a college level Bachelors degree or higher. 5.7% have less than a highschool diploma level education.

About 54% of Jefferson County voted in the presidential election of 2016. This is an increase from the 2012 election by 9,378 votes.
At $80,562 the median income is 116.6% of the Colorado average. An estimated 8,551 people claimed to be unemployed last year in Jefferson, the equivalant of around 2.6% of the county population. This represents a decrease in the level of unemployment from the previous year's value of 2.9%.

Top 15 Industries in Jefferson County.
Total # Employed	Industry Job Type
28,060	Retail trade
24,678	Health care and social assistance
23,587	Professional, scientific, and technical services
20,616	Accommodation and food services
19,328	Food services and drinking places
17,879	Restaurants and other eating places
15,844	Administrative and support and waste management and remediation services
15,436	Administrative and support services
12,913	Manufacturing
11,654	Ambulatory health care services
10,169	Full-service restaurants
8,839	Finance and insurance
6,197	Computer systems design and related services
6,073	Other services (except public administration)
6,037	Limited-service restaurants

In 2018 the average price reduction was 2.20% in Jefferson County (averaging across 14 zip codes a sample of which are; 80007, 80227, 80005, 80215 and 80401).

In 2018 19.68% of listings in Jefferson County (averaging across 19 zip codes a sample of which are; 80465, 80127, 80226, 80128 and 80215) dropped their price.

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