The population of Grundy county is estimated at 50,269. In 2017 there were 601 births and 396 deaths in Grundy county. Grundy county has 10,204 housing units that are owned with a mortgage or a loan, 3,726 that are owned free and clear and 4,616 that are renter occupied.

  The residents of Grundy County filed 25,000 federal tax returns in 2017. This amount represents 0.4% of all Illinois filings and 0.017% of the entire nation. Grundy had a combined total federal tax liability of $258,266,000 on earned income of $1,683,670,000. Other notable statistics from Grundy County were 1,650 unemployment claims which collected a total of $10,115,000 and 7,240 charitable contributions valued at $21,046,000. 8,060 filings from Grundy County paid a combined total of $39,199,000 in property taxes and 7,080 filings paid $46,991,000 on mortgage interest costs.

  In 2010 Grundy county had 43 religious congregations with an estimated 20,613 members.
22.6% of the Grundy population has a college level Bachelors degree or higher. 6.7% have less than a highschool diploma level education.

Approximately 46% of Grundy County voted in the presidential election of 2016. This represents an increase from the 2012 election by 1,935 votes.
At $76,214 the median income is 120.9% of the Illinois average. An estimated 1,522 people claimed to be unemployed last year in Grundy, the equivalant of around 5.9% of the county population. This represents a decrease in the level of unemployment from the previous year's value of 6.7%.

Top 15 Industries in Grundy County.
Total # Employed	Industry Job Type
2,236	Transportation and warehousing
1,744	Retail trade
1,380	Accommodation and food services
1,306	Manufacturing
1,302	Food services and drinking places
1,163	Truck transportation
1,126	Restaurants and other eating places
952	Specialized freight trucking
800	Chemical manufacturing
781	Professional, scientific, and technical services
735	Ambulatory health care services
678	Limited-service restaurants
490	Wholesale trade
487	Other services (except public administration)
477	Architectural, engineering, and related services

In 2018 the average price reduction was 3.59% in Grundy County (averaging across 2 zip codes; 60447 and 60450).

In 2018 14.16% of listings in Grundy County (averaging across 3 zip codes; 60450, 60416 and 60447) dropped their price.

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