The population of Ada county is estimated at 444,269. In 2017 there were 5,170 births and 2,899 deaths in Ada county. Ada county has 80,467 housing units that are owned with a mortgage or a loan, 21,172 that are owned free and clear and 46,806 that are renter occupied.

  The good residents of Ada County filed 207,610 federal tax returns in 2017. This amount represents 28.1% of all Idaho filings and 0.139% of the entire nation. Ada had an impressive combined total federal tax liability of $2,219,161,000 on earned income of $15,019,526,000. Other notable statistics from Ada County were 7,460 unemployment claims which collected a total of $27,477,000 and 62,910 charitable contributions valued at $407,004,000. 69,120 filings from Ada County paid a combined total of $219,708,000 in property taxes and 61,340 filings paid $488,847,000 on mortgage interest costs.

  In 2010 Ada county had 355 religious congregations with an estimated 168,829 members.
37.6% of the Ada population has a college level Bachelors degree or higher. 5.3% have less than a highschool diploma level education.

Approximately 44% of Ada County voted in the presidential election of 2016. This represents an increase from the 2012 election by 15,226 votes.
At $61,469 the median income is 117.6% of the Idaho average. An estimated 6,469 people claimed to be unemployed last year in Ada, the equivalant of around 2.8% of the county population. This represents a decrease in the level of unemployment from the previous year's value of 3.3%.

Top 15 Industries in Ada County.
Total # Employed	Industry Job Type
29,953	Health care and social assistance
20,428	Retail trade
16,660	Accommodation and food services
16,349	Administrative and support and waste management and remediation services
14,873	Food services and drinking places
14,538	Manufacturing
13,323	Restaurants and other eating places
12,378	Professional, scientific, and technical services
12,005	General medical and surgical hospitals
10,079	Finance and insurance
8,434	Ambulatory health care services
8,141	Wholesale trade
7,183	Full-service restaurants
7,131	Employment services
6,880	Information

In 2018 the average price reduction was 2.25% in Ada County (averaging across 15 zip codes a sample of which are; 83634, 83642, 83712, 83705 and 83706).

In 2018 20.14% of listings in Ada County (averaging across 15 zip codes a sample of which are; 83705, 83634, 83713, 83616 and 83706) dropped their price.

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