The population of Knox county is estimated at 50,945. In 2017 there were 539 births and 579 deaths in Knox county. Knox county has 8,632 housing units that are owned with a mortgage or a loan, 6,371 that are owned free and clear and 6,532 that are renter occupied.

  The gracious residents of Knox County filed 22,940 federal tax returns in 2017. This amount represents 0.4% of all Illinois filings and 0.015% of the entire nation. Knox had a combined total federal tax liability of $171,322,000 on earned income of $1,152,578,000. Other notable statistics from Knox County were 1,080 unemployment claims which collected a total of $5,301,000 and 2,500 charitable contributions valued at $13,605,000. 3,120 filings from Knox County paid a combined total of $12,580,000 in property taxes and 2,300 filings paid $10,988,000 on mortgage interest costs.

  In 2010 Knox county had 93 religious congregations with an estimated 18,655 members.
17.9% of the Knox population has a college level Bachelors degree or higher. 12.0% have less than a highschool diploma level education.

Approximately 43% of Knox County voted in the presidential election of 2016. This represents a decrease from the 2012 election by 553 votes.
At $44,686 the median income is 70.9% of the Illinois average. An estimated 1,144 people claimed to be unemployed last year in Knox, the equivalant of around 5.1% of the county population. This represents a decrease in the level of unemployment from the previous year's value of 6.1%.

Top 15 Industries in Knox County.
Total # Employed	Industry Job Type
3,696	Health care and social assistance
3,463	Retail trade
1,715	Accommodation and food services
1,579	Food services and drinking places
1,452	Restaurants and other eating places
1,161	Nursing and residential care facilities
782	General merchandise stores
704	Ambulatory health care services
703	Food and beverage stores
692	Nursing care facilities (skilled nursing facilities)
680	Full-service restaurants
680	Limited-service restaurants
680	Wholesale trade
596	Transportation and warehousing
562	Other services (except public administration)

In 2018 the average price reduction was 4.22% in Knox County.

In 2018 11.43% of listings in Knox County.

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