The population of Warren county is estimated at 17,307. In 2017 there were 235 births and 180 deaths in Warren county. Warren county has 2,862 housing units that are owned with a mortgage or a loan, 2,227 that are owned free and clear and 1,829 that are renter occupied.

  The residents of Warren County filed 7,850 federal tax returns in 2017. This amount represents 0.1% of all Illinois filings and 0.005% of the entire nation. Warren had a combined total federal tax liability of $50,353,000 on earned income of $386,209,000. Other notable statistics from Warren County were 310 unemployment claims which collected a total of $1,466,000 and 820 charitable contributions valued at $4,004,000. 930 filings from Warren County paid a combined total of $3,157,000 in property taxes and 650 filings paid $2,934,000 on mortgage interest costs.

  In 2010 Warren county had 43 religious congregations with an estimated 7,890 members.
24.3% of the Warren population has a college level Bachelors degree or higher. 12.1% have less than a highschool diploma level education.

Approximately 44% of Warren County voted in the presidential election of 2016. This represents an increase from the 2012 election by 224 votes.
At $54,023 the median income is 85.7% of the Illinois average. An estimated 357 people claimed to be unemployed last year in Warren, the equivalant of around 4.1% of the county population. This represents a decrease in the level of unemployment from the previous year's value of 5.2%.

Top 15 Industries in Warren County.
Total # Employed	Industry Job Type
1,803	Manufacturing
694	Health care and social assistance
552	Retail trade
481	Accommodation and food services
344	Restaurants and other eating places
240	Wholesale trade
233	Limited-service restaurants
196	Nursing and residential care facilities
146	Merchant wholesalers, nondurable goods
129	Supermarkets and other grocery (except convenience) stores
129	Grocery stores
127	General merchandise stores
117	Administrative and support and waste management and remediation services
116	Commercial banking
115	Other services (except public administration)

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