The population of Washington county is estimated at 22,109. In 2017 there were 299 births and 225 deaths in Washington county. Washington county has 4,205 housing units that are owned with a mortgage or a loan, 2,334 that are owned free and clear and 2,202 that are renter occupied.

  The residents of Washington County filed 10,490 federal tax returns in 2017. This amount represents 0.7% of all Iowa filings and 0.007% of the entire nation. Washington had a combined total federal tax liability of $77,870,000 on earned income of $586,008,000. Other notable statistics from Washington County were 500 unemployment claims which collected a total of $1,923,000 and 2,520 charitable contributions valued at $12,336,000. 2,770 filings from Washington County paid a combined total of $8,223,000 in property taxes and 2,050 filings paid $11,362,000 on mortgage interest costs.

  In 2010 Washington county had 57 religious congregations with an estimated 12,465 members.
21.1% of the Washington population has a college level Bachelors degree or higher. 8.6% have less than a highschool diploma level education.

Approximately 49% of Washington County voted in the presidential election of 2016. This represents a decrease from the 2012 election by 56 votes.
At $59,903 the median income is 102.0% of the Iowa average. An estimated 360 people claimed to be unemployed last year in Washington, the equivalant of around 2.9% of the county population. This represents an increase in the level of unemployment from the previous year's value of 2.9%.

Top 15 Industries in Washington County.
Total # Employed	Industry Job Type
1,252	Health care and social assistance
1,091	Retail trade
1,078	Manufacturing
414	Food services and drinking places
366	Restaurants and other eating places
306	Wholesale trade
301	Continuing care retirement communities and assisted living facilities for the elderly
301	Continuing care retirement communities
241	Supermarkets and other grocery (except convenience) stores
241	Grocery stores
223	Finance and insurance
223	Ambulatory health care services
221	Gasoline stations
207	Full-service restaurants
165	Merchant wholesalers, nondurable goods

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