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Mercer County, New Jersey

Historic newspapers, landmarks, and county history layers for genealogists and local historians.

—newspaper titles

—digitized titles

117historic places

—earliest paper

1838formed

387,340pop. 2020

21cemeteries

—CW battlefields

At a glance

Summary

The National Register of Historic Places includes 117 listed properties in the county, first listed in 1966; 15 are also National Historic Landmarks. Most listings are in or near Trenton, Princeton, Pennington.

Summary generated automatically from the source data on this page.

Newspapers

Library of Congress

Newspaper directory data for New Jersey is not yet loaded on this site. Browse Mercer titles at the Library of Congress.

National Register of Historic Places

NPS NRHP

59 of 117 listings mapped; some locations are restricted by NPS to protect sensitive sites.

117 listed properties

Property	City	Type	Listed
Abbott Farm Archeological Site NHL	Trenton	Site	1976
Abbott, John II, House	Trenton	Building	1976
Abbott-Decou House	Trenton	Building	1976
Adams and Sickles Building	Trenton	Building	1980
American Cigar Company Building	Trenton	Building	2011
Anderson-Capner House	Lawrence	Building	1973
Archeological Site No. 1-18th Century Vessel (28ME196)	Trenton	Site	1986
Baker-Brearley House	Lawrenceville	Building	1979
Bear Tavern Road-Jacob's Creek Crossing Rural Historic District	Somerset	District	2011
Bellevue Avenue Colored School	Trenton	Building	1997
Berkeley Square Historic District	Trenton	District	1980
Bow Hill	Trenton	Building	1973
Brearley, Charles, House	Trenton	Building	1995
Broad Street National Bank	Trenton	Building	2008
Camden and Amboy Railroad Right of Way Site	Hightstown Borough	Site	2016
Carver Center	Trenton	Building	2022
Clay, Henry and Bock and Company Cigar Factory	Trenton	Building	1979
Cleveland, Grover, Home NHL	Princeton	Building	1966
Dickinson, Gen. Philemon, House	Trenton	Building	1974
Douglass House	Trenton	Building	1970
Downtown Trenton Commercial Historic District	Trenton	District	2025
Drake Farmstead-Brookdale Farm (Additional Documentation)	Hopewell Township	District	2024
Drumthwacket	Princeton	Building	1975
East Trenton Public Library	Trenton	Building	2008
Einstein, Albert, House NHL	Princeton	Building	1976
First Presbyterian Church	Trenton	Building	2005
First Presbyterian Church of Pennington	Pennington	Building	2011
Golden Swan-True American	Trenton	Building	2008
Green, William, House	Ewing	Building	1973
Green-Reading House	Ewing Township	Building	1998
Harbourton Historic District	Harbourton	District	1974
Hart, John D., House	Pennington	Building	1972
Hart-Hoch House	Pennington	Building	1973
Henry, Joseph, House NHL	Princeton	Building	1966
Herring, Donald Grant, Estate	Rocky Hill	Building	1992
Higbee Street School	Trenton	Building	1995
Hog Island Cranes	Trenton	Object	1980
Hopewell Station	Hopewell	Building	1984
House at 379 West State Street	Trenton	Building	1980
Hunt Farmstead	Rosedale	Building	1988
In and Out Social Club	Trenton	Building	1987
Jugtown Historic District	Princeton Borough	District	1987
Kingston Mill Historic District	Princeton	District	1986
Kuser, Rudolph V., Estate	Trenton	Building	1979
Lake Carnegie Historic District	Princeton	District	1990
Lawrence Township Historic District	Lawrenceville	District	1972
Lawrenceville School NHL	Lawrenceville	District	1986
Leigh, Ichabod, House	Hopewell	Building	1975
Maddock's, Thomas, Sons Company	East Trenton Heights	Building	2008
Mansion House	Trenton	Building	1973
Maybury Hill NHL	Princeton	Building	1971
Mercer Street Friends Center	Trenton	Building	1971
Mill Hill Historic District	Trenton	District	1977
Morven NHL	Princeton	Building	1971
Mott School and Second Street School	Trenton	Building	1986
Mount Rose Distillery	Hopewell	Site	1996
Mountain Avenue Historic District	Princeton	District	1995
Nassau Hall, Princeton University NHL	Princeton	Building	1966
New Jersey Division of Motor Vehicles Building	Trenton	Building	2023
Old Barracks NHL	Trenton	Building	1971
Old Eagle Tavern	Trenton	Building	1972
Old Ryan Farm	Trenton	Building	1971
Pearson, Isaac, House	Hamilton Township	Building	2006
Pennington Railroad Station	Pennington	Building	1974
Penns Neck Baptist Church	Penns Neck	Building	1989
Pennsylvania Railroad Bridge	Trenton	Structure	1979
Philadelphia and Reading Railroad Freight Station	Trenton	Building	1979
Phillips, Joseph, Farm	Titusville	District	1977
Pleasant Valley Historic District	Lambertville	District	1991
President's House NHL	Princeton	Building	1971
Princeton Battlefield NHL	Princeton	Site	1966
Princeton Battlefield -Stony Brook Village Historic District (Boundary Increase) NHL	Princeton	District	1989
Princeton Battlefield-Stony Brook Village Historic District (Boundary Increase II) NHL	Princeton	District	2019
Princeton Historic District	Princeton	District	1975
Princeton Historic District (Boundary Increase)	Princeton	District	2017
Princeton Ice Company	Princeton	Site	2007
Prospect NHL	Princeton	Building	1985
Riverview Cemetery	Trenton	District	2017
Roebling Machine Shop	Trenton	Building	1997
Roebling's, John A., Sons Company, Trenton N.J., Block 3	Trenton	District	2012
Rogers, John, House	Princeton	Building	1978
Sacred Heart Church	Trenton	Building	2002
Sloan, Samuel, House	Hightstown	Building	1974
Smith-Ribsam House	Eldridge Park	Building	1988
Somerset Roller Mills	Titusville	Building	1974
St. Michael's Episcopal Church	Trenton	Building	1982
State House District	Trenton	District	1976
State House Historic District (Boundary Increase)	Trenton	District	1992
Stevens, Israel, House	Lawrence	Building	2005
Stockton Street Historic District	Hightstown	District	2005
Stokely-Van Camp Industrial Complex	Trenton	Building	1983
Stout, Joseph, House	Hopewell	Building	1974
The Old School Baptist Church and Cemetery of Hopewell	Hopewell Borough	District	2024
Titusville Historic District	Titusville	District	1983
Trent, William, House NHL	Trenton	Building	1970
Trenton Battle Monument	Trenton	Object	1977
Trenton Central Office of the Bell Telephone Company	Trenton	Building	2017
Trenton City Hall	Trenton	Building	1978
Trenton Ferry Historic District	Trenton	District	2013
Trenton Friends Meeting House	Trenton	Building	2008
Trenton Jewish Community Center Bath House and Day Camp	Ewing	Building	1984
Trenton Watch Company Building-Circle F Manufacturing Company Building	Trenton	Building	2017
Trenton and Mercer County War Memorial-Soldiers' and Sailors' Memorial Building	Trenton	Building	1986
Tusculum	Princeton	Building	1978
U.S. Post Office and Courthouse	Trenton	Building	2012
University Cottage Club	Princeton Borough	Building	1999
V. Henry Rothschild-F.A. Straus and Co.-Atlantic Products Corporation Mill Complex	Hamilton Township	Building	2020
Van Cleve, Col. John, Homestead	Pennington	Building	1983
Vandyke, Jeremiah, House	Hopewell	Building	1978
Washington Road Elm Allee	West Windsor	Site	1999
Watson, Isaac, House	Trenton	Building	1974
Welling, John, House	Pennington	Building	1973
West Trenton Station	West Trenton	Building	1984
White, John, House	Lawrenceville	Building	1973
Windsor Historic District	Windsor	District	1992
Witherspoon Street School for Colored Children	Princeton	Building	2005
Woolsey, Jeremiah, House	Pennington	Building	1975

Source: National Park Service, National Register of Historic Places. Property links open NRHP nomination files at the National Archives.

County formation

Newberry AHCB

Mercer was formed in 1838 (1838-02-22) from Burlington, Hunterdon, Middlesex.

MERCER created from BURLINGTON, HUNTERDON, and MIDDLESEX.

Source: Newberry Library, Atlas of Historical County Boundaries.

Population by decade

Census

Mercer County population from 1840 to 2020 (Census historical series).

1840	1860	1880	1900	1920	1940	1950	1960	1980	2000	2020
21,502	37,419	58,061	95,365	159,881	197,318	229,781	266,392	307,863	350,761	387,340

Sources: U.S. Census Bureau historical county population (Forstall 1790–1990) and public-domain / CC0 county population series through 2020.

Cemeteries & historical places

USGS GNIS

21 cemeteries and 0 historical populated places (ghost towns / former settlements) recorded in USGS GNIS for this county.

Cemeteries — 21 of 21 listed

Name	Lat	Lon
Cedar Hill Cemetery	40.26567	-74.53094
Colonial Memorial Park	40.18823	-74.70835
Crosswicks Cemetery	40.16252	-74.64662
Dutch Neck Cemetery	40.28278	-74.614
East Windsor Cemetery	40.23249	-74.52341
Ewing Church Cemetery	40.27073	-74.80325
Fountain Lawn Memorial Park	40.26996	-74.75732
Greenwood Cemetery	40.22889	-74.71888
Highland Cemetery	40.39596	-74.76644
Lawrenceville Cemetery	40.30732	-74.72183
Mercer Cemetery	40.21955	-74.75599
Morris Hall Cemetery	40.28689	-74.73615
Princeton Cemetery	40.3547	-74.66019
Princeton Memorial Park	40.21145	-74.57875
Riverview Cemetery	40.1951	-74.75488
Saint Hedwigs Cemetery	40.27248	-74.75786
Saint John's Cemetery	40.19747	-74.74709
Saint Mary's Cemetery	40.20958	-74.72243
Saint Paul's Cemetery	40.3529	-74.65431
State Cemetery	40.26879	-74.79556
Stoutsburg Cemetery	40.40472	-74.74632

Source: USGS Geographic Names Information System (public domain). Cemeteries from the 2021 NationalFile archive; historical places from GNIS HistoricalFeatures topical extract.

Historical markers

HMdb link

Marker text and photos from the Historical Marker Database (HMdb) are not embedded here. HMdb allows non-commercial reuse with attribution, but commercial/compensated use needs written permission; this is a commercial site, so we only link out.

Search HMdb for Mercer County, New Jersey

Terms: hmdb.org/copyright.asp. Linking is encouraged by HMdb.