The population of Jefferson county is estimated at 114,084. In 2017 there were 1,869 births and 936 deaths in Jefferson county. Jefferson county has 15,875 housing units that are owned with a mortgage or a loan, 9,403 that are owned free and clear and 18,173 that are renter occupied.

  The gracious residents of Jefferson County filed 50,570 federal tax returns in 2017. This amount represents 0.5% of all New York filings and 0.034% of the entire nation. Jefferson had a combined total federal tax liability of $349,857,000 on earned income of $2,495,872,000. Other notable statistics from Jefferson County were 2,760 unemployment claims which collected a total of $12,712,000 and 6,630 charitable contributions valued at $24,298,000. 8,020 filings from Jefferson County paid a combined total of $36,980,000 in property taxes and 6,910 filings paid $40,715,000 on mortgage interest costs.

  In 2010 Jefferson county had 149 religious congregations with an estimated 39,538 members.
21.4% of the Jefferson population has a college level Bachelors degree or higher. 9.7% have less than a highschool diploma level education.

Approximately 30% of Jefferson County voted in the presidential election of 2016. This is an increase from the 2012 election by 2,212 votes.
At $47,436 the median income is 73.2% of the New York average. An estimated 2,978 people claimed to be unemployed last year in Jefferson, the equivalant of around 6.6% of the county population. This represents an increase in the level of unemployment from the previous year's value of 6.2%.

Top 15 Industries in Jefferson County.
Total # Employed	Industry Job Type
6,849	Retail trade
6,183	Health care and social assistance
4,117	Accommodation and food services
3,458	Food services and drinking places
3,373	Restaurants and other eating places
2,247	Manufacturing
1,871	Full-service restaurants
1,793	Ambulatory health care services
1,538	Administrative and support and waste management and remediation services
1,507	Administrative and support services
1,407	Transportation and warehousing
1,383	General merchandise stores
1,364	Limited-service restaurants
1,291	Nursing and residential care facilities
1,092	Professional, scientific, and technical services

In 2018 the average price reduction was 4.01% in Jefferson County.

In 2018 13.25% of listings in Jefferson County (averaging across 2 zip codes; 13619 and 13601) dropped their price.

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