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The county was named for Hugh Mercer, Revolutionary War officer who died at the Battle of Princeton
The county is in the Trenton metro area.The estimated population in 2004 was 365,271. This was an increase of 4.14% from the 2000 census.
In 2002, the per capita personal income in Mercer County was $40,711. This was an increase of 24.2% from 1997. The 2002 figure was 132% of the national per capita income, which was $30,906.

11% of Mercer County residents report German ancestry, and 12% report Irish. For more info on local ancestry groups, see the Mercer County ancestry & family history guide.
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Cemeteries in Mercer County include Cedar Hill Cemetery, East Windsor Cemetery, Ewing Cemetery, Fountain Lawn Memorial Park Cemetery, Greenwood Cemetery, Highland Cemetery, Lawrenceville Cemetery, Mercer Cemetery, Princeton Cemetery, Riverview Cemetery ... View cemeteries
Communities in Mercer County include East Windsor, Ewing, Hamilton, Hightstown, Hillcrest, Hopewell, Hopewell, Lawrence, Lawrenceville, Mercerville ... View communities
Colleges in Mercer County include College of New Jersey, Princeton Theological Seminary, Princeton University, Rider University, Thomas Edison State College ... View colleges
School districts in Mercer County include East Windsor Regional, Ewing Township, Hamilton Township, Hopewell Valley Regional, Lawrence Township, Princeton Regional, Trenton, Washington Township, West Windsor-Plainsboro R ... View school districts
To see school district boundaries, wait for the map to load in the new window, then select 'Legend.' Choose 'school districts' and update map.
To see school district boundaries, wait for the map to load in the new window, then select 'Legend.' Choose 'school districts' and update map.
Libraries in Mercer County include Briggs Branch, Cadwalader Branch, East Trenton Branch, Ewing Branch Library, Hamilton Twp Free Public Library, Hickory Corner Road Branch, Hightstown Memorial Library, Hollowbrook Branch Library, Hopewell Branch Library, Hopewell Public Library ... View libraries
Newspapers in Mercer County include Hopewell Valley News, Lawrence Ledger, Princeton Packet, Princeton Town Topics, Trenton Times, Trentonian, Windsor-Hights Herald ... View newspapers
Mercer County supported John Kerry in the 2004 presidential election. For more information, see our Mercer County political report.
Airports in Mercer County include Trenton Mercer
Hotels in Mercer County include Amerisuites, Chauncey Conference Center, Clarion Hotel Palmer Inn, Courtyard Ewing Hopewell, Courtyard Princeton, Days Inn of East Windsor, Doral Forrestal, Extended Stay America, Holiday Inn Hotels, Hyatt Regency Princeton ... More hotels
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