The population of Arlington county is estimated at 231,610 where 143,798 speak English exclusively and 5,938 speak primarily in another language. In 2017 there were 3,074 births and 1,063 deaths in Arlington county. Arlington county has 34,525 housing units that are owned with a mortgage or a loan, 7,932 that are owned free and clear and 55,593 that are renter occupied.

  The good residents of Arlington County filed 123,520 federal tax returns in 2017. This amount represents 3.2% of all Virginia filings and 0.083% of the entire nation. Arlington had an impressive combined total federal tax liability of $2,989,722,000 on earned income of $14,710,827,000. Other notable statistics from Arlington County were 1,700 unemployment claims which collected a total of $7,337,000 and 44,280 charitable contributions valued at $268,173,000. 39,270 filings from Arlington County paid a combined total of $273,449,000 in property taxes and 33,400 filings paid $456,434,000 on mortgage interest costs.

  In 2010 Arlington county had 113 religious congregations with an estimated 64,834 members.
74.1% of the Arlington population has a college level Bachelors degree or higher. 6.1% have less than a highschool diploma level education.

Approximately 52% of Arlington County voted in the presidential election of 2016. This represents an increase from the 2012 election by 2,065 votes.
At $114,705 the median income is 160.4% of the Virginia average. An estimated 3,723 people claimed to be unemployed last year in Arlington, 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 Arlington County.
Total # Employed	Industry Job Type
42,070	Professional, scientific, and technical services
17,342	Accommodation and food services
15,134	Management, scientific, and technical consulting services
14,988	Computer systems design and related services
13,483	Management consulting services
13,064	Food services and drinking places
11,756	Administrative management and general management consulting services
11,225	Restaurants and other eating places
10,355	Other services (except public administration)
9,610	Retail trade
9,361	Administrative and support and waste management and remediation services
8,987	Health care and social assistance
8,200	Computer systems design services
7,696	Religious, grantmaking, civic, professional, and similar organizations
7,220	Full-service restaurants

In 2018 the average price reduction was 2.45% in Arlington County (averaging across 5 zip codes; 22207, 22203, 22201, 22204 and 22206).

In 2018 10.76% of listings in Arlington County (averaging across 7 zip codes a sample of which are; 22202, 22203, 22207, 22204 and 22206) dropped their price.

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