The population of Delaware county is estimated at 563,995 where 465,037 speak English exclusively and 5,285 speak primarily in another language. In 2017 there were 6,473 births and 5,480 deaths in Delaware county. Delaware county has 105,711 housing units that are owned with a mortgage or a loan, 41,501 that are owned free and clear and 61,488 that are renter occupied.

  The good residents of Delaware County filed 276,360 federal tax returns in 2017. This amount represents 4.5% of all Pennsylvania filings and 0.185% of the entire nation. Delaware had an impressive combined total federal tax liability of $4,371,744,000 on earned income of $23,277,475,000. Other notable statistics from Delaware County were 11,770 unemployment claims which collected a total of $64,456,000 and 97,730 charitable contributions valued at $520,739,000. 100,470 filings from Delaware County paid a combined total of $743,264,000 in property taxes and 83,610 filings paid $644,988,000 on mortgage interest costs.

  In 2010 Delaware county had 429 religious congregations with an estimated 358,908 members.
37.7% of the Delaware population has a college level Bachelors degree or higher. 7.3% have less than a highschool diploma level education.

Approximately 51% of Delaware County voted in the presidential election of 2016. This represents an increase from the 2012 election by 11,979 votes.
At $73,637 the median income is 124.5% of the Pennsylvania average. An estimated 13,338 people claimed to be unemployed last year in Delaware, the equivalant of around 4.5% of the county population. This represents a decrease in the level of unemployment from the previous year's value of 4.9%.

Top 15 Industries in Delaware County.
Total # Employed	Industry Job Type
39,002	Health care and social assistance
24,271	Retail trade
19,991	Administrative and support and waste management and remediation services
19,222	Administrative and support services
16,283	Accommodation and food services
15,140	Food services and drinking places
13,398	Ambulatory health care services
13,347	Finance and insurance
12,929	Manufacturing
12,084	Professional, scientific, and technical services
12,071	Restaurants and other eating places
10,498	Information
9,390	Nursing and residential care facilities
8,451	Insurance carriers and related activities
7,857	Employment services

In 2018 the average price reduction was 3.29% in Delaware County (averaging across 24 zip codes a sample of which are; 19015, 19073, 19014 and 19083).

In 2018 16.88% of listings in Delaware County (averaging across 27 zip codes a sample of which are; 19082, 19032, 19026 and 19317) dropped their price.

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