The population of Mercer county is estimated at 21,393. In 2017 there were 238 births and 268 deaths in Mercer county. Mercer county has 4,111 housing units that are owned with a mortgage or a loan, 2,288 that are owned free and clear and 2,283 that are renter occupied.

  The residents of Mercer County filed 9,710 federal tax returns in 2017. This amount represents 0.5% of all Kentucky filings and 0.007% of the entire nation. Mercer had a combined total federal tax liability of $62,027,000 on earned income of $456,396,000. Other notable statistics from Mercer County were 370 unemployment claims which collected a total of $1,352,000 and 1,850 charitable contributions valued at $8,576,000. 2,130 filings from Mercer County paid a combined total of $4,216,000 in property taxes and 1,850 filings paid $10,676,000 on mortgage interest costs.

  In 2010 Mercer county had 59 religious congregations with an estimated 16,785 members.
17.0% of the Mercer population has a college level Bachelors degree or higher. 15.4% have less than a highschool diploma level education.

Approximately 49% of Mercer County voted in the presidential election of 2016. This represents an increase from the 2012 election by 643 votes.
At $47,611 the median income is 98.5% of the Kentucky average. An estimated 492 people claimed to be unemployed last year in Mercer, the equivalant of around 4.9% of the county population. This represents an increase in the level of unemployment from the previous year's value of 4.8%.

Top 15 Industries in Mercer County.
Total # Employed	Industry Job Type
2,096	Manufacturing
705	Retail trade
696	Health care and social assistance
411	Food services and drinking places
393	Restaurants and other eating places
267	Limited-service restaurants
167	Offices of physicians
165	Arts, entertainment, and recreation
119	Finance and insurance
83	Motor vehicle and parts dealers
81	Gasoline stations
81	Commercial banking
77	Social assistance
70	Other services (except public administration)
58	Professional, scientific, and technical services

In 2018 the average price reduction was 4.37% in Mercer County.

In 2018 8.50% of listings in Mercer County.

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