The population of De Kalb county is estimated at 104,447. In 2017 there were 1,178 births and 707 deaths in De Kalb county. De Kalb county has 17,851 housing units that are owned with a mortgage or a loan, 5,696 that are owned free and clear and 14,937 that are renter occupied.

  The good residents of De Kalb County filed 45,760 federal tax returns in 2017. This amount represents 0.8% of all Illinois filings and 0.031% of the entire nation. De Kalb had a combined total federal tax liability of $374,532,000 on earned income of $2,609,971,000. Other notable statistics from De Kalb County were 2,170 unemployment claims which collected a total of $10,832,000 and 11,320 charitable contributions valued at $40,011,000. 13,350 filings from De Kalb County paid a combined total of $77,992,000 in property taxes and 11,330 filings paid $68,939,000 on mortgage interest costs.

  In 2010 De Kalb county had 106 religious congregations with an estimated 48,858 members.
30.6% of the De Kalb population has a college level Bachelors degree or higher. 7.3% have less than a highschool diploma level education.

Approximately 41% of DeKalb County voted in the presidential election of 2016. This represents an increase from the 2012 election by 1,585 votes.
At $60,856 the median income is 96.5% of the Illinois average. An estimated 2,471 people claimed to be unemployed last year in De Kalb, the equivalant of around 4.5% of the county population. This represents a decrease in the level of unemployment from the previous year's value of 5.3%.

Top 15 Industries in De Kalb County.
Total # Employed	Industry Job Type
4,786	Health care and social assistance
4,404	Retail trade
3,499	Manufacturing
3,161	Accommodation and food services
2,958	Food services and drinking places
2,618	Restaurants and other eating places
2,274	Transportation and warehousing
1,368	Ambulatory health care services
1,346	Limited-service restaurants
1,126	Full-service restaurants
994	Other services (except public administration)
986	General merchandise stores
978	Administrative and support and waste management and remediation services
966	Food and beverage stores
828	Grocery stores

In 2018 the average price reduction was 2.44% in DeKalb County (averaging across 3 zip codes; 60115, 60548 and 60178).

In 2018 14.51% of listings in De Kalb County (averaging across 3 zip codes; 60178, 60548 and 60115) dropped their price.

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