The population of Johnson county is estimated at 17,777. In 2017 there were 151 births and 224 deaths in Johnson county. Johnson county has 2,607 housing units that are owned with a mortgage or a loan, 2,868 that are owned free and clear and 1,720 that are renter occupied.

  The gracious residents of Johnson County filed 6,210 federal tax returns in 2017. This amount represents 0.2% of all Tennessee filings and 0.004% of the entire nation. Johnson had a combined total federal tax liability of $35,423,000 on earned income of $251,502,000. Other notable statistics from Johnson County were 260 unemployment claims which collected a total of $653,000 and 610 charitable contributions valued at $4,859,000. 660 filings from Johnson County paid a combined total of $1,190,000 in property taxes and 540 filings paid $4,082,000 on mortgage interest costs.

  In 2010 Johnson county had 54 religious congregations with an estimated 9,063 members.
10.9% of the Johnson population has a college level Bachelors degree or higher. 22.8% have less than a highschool diploma level education.

About 37% of Johnson County voted in the presidential election of 2016. This represents an increase from the 2012 election by 362 votes.
At $36,331 the median income is 70.8% of the Tennessee average. An estimated 300 people claimed to be unemployed last year in Johnson, the equivalant of around 3.9% of the county population. This represents a decrease in the level of unemployment from the previous year's value of 4.8%.

Top 15 Industries in Johnson County.
Total # Employed	Industry Job Type
758	Manufacturing
575	Health care and social assistance
453	Retail trade
418	Transportation and warehousing
254	Accommodation and food services
229	Food services and drinking places
229	Restaurants and other eating places
179	Ambulatory health care services
147	Limited-service restaurants
130	Food and beverage stores
130	Grocery stores
111	Depository credit intermediation
94	Outpatient care centers
90	Wood product manufacturing
82	Full-service restaurants

In 2018 5.84% of listings in Johnson County (averaging across 2 zip codes; 37640 and 37683) dropped their price.

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