The population of Lake county is estimated at 704,935 where 474,523 speak English exclusively and 3,291 speak primarily in another language. In 2017 there were 7,588 births and 4,579 deaths in Lake county. Lake county has 146,185 housing units that are owned with a mortgage or a loan, 39,028 that are owned free and clear and 56,499 that are renter occupied.

  The gracious residents of Lake County filed 342,650 federal tax returns in 2017. This amount represents 5.6% of all Illinois filings and 0.230% of the entire nation. Lake had an incredible combined total federal tax liability of $8,307,967,000 on earned income of $38,389,460,000. Other notable statistics from Lake County were 14,270 unemployment claims which collected a total of $85,459,000 and 125,230 charitable contributions valued at $898,745,000. 134,380 filings from Lake County paid a combined total of $1,375,725,000 in property taxes and 110,480 filings paid $974,061,000 on mortgage interest costs.

  In 2010 Lake county had 402 religious congregations with an estimated 379,104 members.
44.2% of the Lake population has a college level Bachelors degree or higher. 9.7% have less than a highschool diploma level education.

Approximately 42% of Lake County voted in the presidential election of 2016. This represents an increase from the 2012 election by 9,542 votes.
At $86,242 the median income is 136.8% of the Illinois average. An estimated 16,350 people claimed to be unemployed last year in Lake, the equivalant of around 4.4% 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 Lake County.
Total # Employed	Industry Job Type
37,702	Retail trade
35,174	Manufacturing
33,669	Health care and social assistance
30,675	Administrative and support and waste management and remediation services
30,010	Administrative and support services
27,371	Wholesale trade
26,120	Professional, scientific, and technical services
24,702	Accommodation and food services
22,404	Food services and drinking places
19,380	Restaurants and other eating places
18,876	Merchant wholesalers, durable goods
13,839	Finance and insurance
12,262	Employment services
11,629	Services to buildings and dwellings
11,371	Ambulatory health care services

In 2018 the average price reduction was 2.69% in Lake County (averaging across 22 zip codes a sample of which are; 60048, 60015, 60047, 60085 and 60031).

In 2018 16.44% of listings in Lake County (averaging across 23 zip codes a sample of which are; 60096, 60087, 60045, 60030 and 60061) dropped their price.

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