The population of Johnson county is estimated at 146,633. In 2017 there were 1,821 births and 761 deaths in Johnson county. Johnson county has 23,138 housing units that are owned with a mortgage or a loan, 8,161 that are owned free and clear and 21,416 that are renter occupied.

  The gracious residents of Johnson County filed 64,720 federal tax returns in 2017. This amount represents 4.5% of all Iowa filings and 0.043% of the entire nation. Johnson had a combined total federal tax liability of $770,907,000 on earned income of $4,742,216,000. Other notable statistics from Johnson County were 2,220 unemployment claims which collected a total of $8,799,000 and 19,490 charitable contributions valued at $91,494,000. 22,230 filings from Johnson County paid a combined total of $106,974,000 in property taxes and 18,250 filings paid $121,647,000 on mortgage interest costs.

  In 2010 Johnson county had 110 religious congregations with an estimated 46,278 members.
52.7% of the Johnson population has a college level Bachelors degree or higher. 4.9% have less than a highschool diploma level education.

Approximately 52% of Johnson County voted in the presidential election of 2016. This represents an increase from the 2012 election by 709 votes.
At $61,395 the median income is 104.6% of the Iowa average. An estimated 2,112 people claimed to be unemployed last year in Johnson, the equivalant of around 2.5% of the county population. This represents a decrease in the level of unemployment from the previous year's value of 2.6%.

Top 15 Industries in Johnson County.
Total # Employed	Industry Job Type
15,739	Health care and social assistance
9,707	General medical and surgical hospitals
8,743	Retail trade
6,315	Food services and drinking places
5,658	Restaurants and other eating places
4,983	Manufacturing
3,669	Transportation and warehousing
3,414	Full-service restaurants
3,151	Truck transportation
3,017	General freight trucking
2,883	General freight trucking, long-distance
2,883	General freight trucking, long-distance, truckload
2,671	Administrative and support and waste management and remediation services
2,651	Administrative and support services
2,406	Ambulatory health care services

In 2018 the average price reduction was 2.21% in Johnson County (averaging across 3 zip codes; 52240, 52241 and 52317).

In 2018 9.31% of listings in Johnson County (averaging across 5 zip codes; 52245, 52317, 52240, 52241 and 52246) dropped their price.

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