Extreme Benchmark Hunting
Center of Population Monuments

1960 Census National Center of Population
 PID: JB1836     Geocaching details     NGS datasheet
Designation: CENTER OF POPULATION 1961
Date: 1961
Type: DS = TRIANGULATION STATION DISK
State and county: IL/CLINTON
Position: 38° 35' 58.2" (N)    089° 12' 35.3" (W)    Topozone
Altitude: 143. (meters)    469.16 (feet)
Last report: 1970 GOOD LOCENG
 
1970 Census National Center of Population
 PID: JB1913     Geocaching details     NGS datasheet
Designation: CENSUS CTR OF POPULATION
Date: 1971
Type: DS = TRIANGULATION STATION DISK
State and county: IL/ST CLAIR
Position: 38° 27' 47.2" (N)    089° 42' 22.3" (W)    Topozone
Altitude: 123.6 (meters)    405.51 (feet)
Last report: 2001 GOOD NGS
 
1980 Census National Center of Population
 PID: JC1679     Geocaching details     NGS datasheet
Designation: CENSUS
Date: 1980
Type: DD = SURVEY DISK
State and county: MO/JEFFERSON
Position: 38° 08' 13.2" (N)    090° 34' 26.5" (W)    Topozone
Altitude: 193. (meters)    633.20 (feet)
Last report: 1982 GOOD NGS
 
1990 Census National Center of Population
 PID: HC1137     Geocaching details     NGS datasheet
Designation: POPULATION CENTER
Date: 1991
Type: DD = SURVEY DISK
State and county: MO/CRAWFORD
Position: 37° 58' 27.1" (N)    091° 20' 15.0" (W)    Topozone
Altitude: 223.0 (meters)    731.63 (feet)
Last report: 2005 GOOD MODNR
 
2000 Census National Center of Population
 PID: AJ3110     Geocaching details     NGS datasheet
Designation: CENSUS 2000
Date: 2001
Type: DV = VERTICAL CONTROL DISK
State and county: MO/PHELPS
Position: 37° 42' 29.0" (N)    091° 52' 03.7" (W)    Topozone
Altitude: 368.675 (meters)    1209.56 (feet)
Last report: 2005 GOOD INDIV
 
2000 Census State Centers of Population
After the 2000 census, the NOAA National Ocean Service (NOS), the Census Bureau, and the American Congress on Surveying and Mapping (ACSM) sponsored a project to monument each state's center of population. To date, 21 of these state monuments have been accepted into the NGS National Spatial Reference System database. Information on the locations of 18 additional state monuments has been obtained from various sources.
 
Alabama
No information was found.
 
Alaska
The station was unveiled Aug 20, 2005 at the South Palmer Station on the Glenn Highway, the commuter rail terminal at the Alaska State Fair. Its approximate location is 61°34'41.6" N  149°08'19.9" W.
 
Arizona
This station was dedicated Feb 25, 2004 but has not yet been accepted into the NGS database. It is located at McQueen Park, 510 N. Horne Ave, Gilbert, Arizona. Its approximate location is 33°21'21.8" N  111°48'59.4" W.
 
Arkansas
In June 2002, the US Army Corps of Engineers assisted Arkansas in setting this station near Toad Suck Park, 1.5 miles west of Toad Suck, Arkansas. The work was expected to be completed in August 2002, but has not been accepted into the NGS database. Its approximate location is 35°04'37.2" N  92°32'38.6" W.
 
California
 PID: DH6647     Geocaching details     NGS datasheet
Designation: CA 2000 CPOP
Date: July 1, 2004
Type: DO = NOT SPECIFIED OR SEE DESCRIPTION
State and county: CA/KERN
Position: 35° 25' 03.3" (N)    119° 25' 27.9" (W)    Topozone
Altitude: 91.6(meters)    300.5 (feet)
Last report: 2004 MONUMENTED CADT
 
Colorado
 PID: DH7070     Geocaching details     NGS datasheet
Designation: SAMPSON MTN
Date: 2000
Type: DD = SURVEY DISK
State and county: CO/JEFFERSON
Position: 39° 32' 35.4" (N)    105° 09' 07.3" (W)    Topozone
Altitude: 1856.3 (meters)    6090 (feet)
Last report: 2000 MONUMENTED NGS
 
Connecticut
 PID: DG5871     Geocaching details     NGS datasheet
Designation: CENTROID
Date: November 12, 2003
Type: DD = SURVEY DISK
State and county: CT/NEW HAVEN
Position: 41° 30' 39.6" (N)    072° 52' 59.9" (W)    Topozone
Altitude: 69.6 (meters)    228.35 (feet)
Last report: 2005 GOOD CTGS
 
Delaware
The monument was set in 2003 but has not yet been accepted into the NGS database. It is located on the north side of Rt 9 (Flemings Landing Road) at the roadside edge of the grounds of the old school house near Cedar Swamp Road. It is a Berntsen commemorative disk stamped 2000 Delaware Population Center Marker, CEDAR SWAMP, and its coordinates are 39° 24' 19.90589 (N), 75° 35' 19.08456 (W).
 
District of Columbia
No information was found.
 
Florida
 PID: DK4252     Geocaching details     NGS datasheet
Designation: FLORIDA 2000 CENTER OF POPULAT
Date: September 26, 2003
Type: DD = SURVEY DISK
State and county: FL/POLK
Position: 27° 45' 07.3" (N)    081° 48' 06.4" (W)    Topozone
Altitude: 41.86 (meters)    137.3 (feet)
Last report: 2003 MONUMENTED PICKET
 
Georgia
 PID: DF6671     Geocaching details     NGS datasheet
Designation: GEORGIA CENTER OF POPULATION
Date: March 06, 2003
Type: DD = SURVEY DISK
State and county: GA/BUTTS
Position: 33° 19' 15.1" (N)    083° 50' 38.0" (W)    Topozone
Altitude: 164.0 (meters)    538.06 (feet)
Last report: 2005 GOOD GADT
 
Hawaii
No monument has been set. The calculated Census 2000 center of population falls in the ocean and no alternate location has been selected.
 
Idaho
This station was set May 21, 2004 and dedicated September 25, 2004, but has not yet been accepted into the NGS database. It is located approximately 7 miles west of Stanley, Idaho, at the Park Creek Overlook on Idaho Highway 21. The position is at approximately 44°16'56.5" N 115°01'39.0" W, at a distance of 5.92 miles N62°22'10"E from the state's Census 2000 center of population located at 44°14'33.4" N 115°08'00.0" W.
 
Illinois
This station was dedicated July 10, 2004 but has not yet been accepted into the NGS database. It is located at the edge of Centennial Park in Mazon, Illinois. Its approximate location is 41°14'37.9" N 88°25'22.6" W.
 
Indiana
A monument has not yet been set.
 
Iowa
No information was found.
 
Kansas
A monument marking the state's center of population is located at the commuter parking lot and scenic overlook on Highway 63, just north of Westphalia near Route 133. It is unclear whether this is the official monument of the Center of Population project. [Update: on Nov 18, 2005, the Kansas Society of Land Surveyors replied that Kansas had not yet set a monument.]
 
Kentucky
 PID: DG7974     Geocaching details     NGS datasheet
Designation: CENTER OF POPULATION
Date: November 12, 2002
Type: DO = NOT SPECIFIED OR SEE DESCRIPTION
State and county: KY/WASHINGTON
Position: 37° 45' 39.6" (N)    085° 12' 53.1" (W)    Topozone
Altitude: 219.2 (meters)    719.16 (feet)
Last report: 2002 MONUMENTED KYTC
 
Louisiana
 PID: DE5745     Geocaching details     NGS datasheet
Designation: LOUISIANA POPULATION CENTER
Date: April 16, 2001
Type: DO = NOT SPECIFIED OR SEE DESCRIPTION
State and county: LA/POINTE COUPEE
Position: 30° 41' 55.1" (N)    091° 27' 27.4" (W)    Topozone
Altitude: 8. (meters)    26.25 (feet)
Last report: 2001 MONUMENTED LASPS
 
Maine
No information was found.
 
Maryland
 PID: DF8458     Geocaching details     NGS datasheet
Designation: MARYLAND CENTER OF POPULATION
Date: August 05, 2003
Type: DD = SURVEY DISK
State and county: MD/HOWARD
Position: 39° 08' 21.3" (N)    076° 49' 42.2" (W)    Topozone
Altitude: 78.9 (meters)    258.86 (feet)
Last report: 2007 GOOD JMT
 
Massachusetts
This station was dedicated June 2, 2004 but has not yet been accepted into the NGS database. It is located on the grounds of the Natick High School athletic complex in Natick, Mass. Its location is approximately N 42° 16' 18.7" W 71° 21' 48.4"
 
Michigan
 PID: DF8446     Geocaching details     NGS datasheet
Designation: MICHIGAN CENTER OF POPULATION
Date: August 18, 2003
Type: Z = SEE DESCRIPTION
State and county: MI/SHIAWASSEE
Position: 42° 48' 42.6" (N)    084° 18' 25.4" (W)    Topozone
Altitude: 270.1 (meters)    886.15 (feet)
Last report: 2007 GOOD WOOLPT
 
Minnesota
No information was found.
 
Mississippi
The Mississippi Association of Professional Surveyors decided not to participate in the project.
 
Missouri
 PID: DE6442     Geocaching details     NGS datasheet
Designation: MISSOURI CENTER OF POPULATION
Date: May 20, 2002
Type: DO = NOT SPECIFIED OR SEE DESCRIPTION
State and county: MO/OSAGE
Position: 38° 27' 15.0" (N)    092° 00' 36.1" (W)    Topozone
Altitude: 242.0 (meters)    793.96 (feet)
Last report: 2005 GOOD INDIV
 
Montana
 PID: DH4417     Geocaching details     NGS datasheet
Designation: MONTANA CENTER OF POPULATION
Date: Aug 18, 2002
Type: DD = SURVEY DISK
State and county: MT/MEAGHER
Position: 46° 48' 07.7" (N)    111° 10' 51.2" (W)    Topozone
Altitude: 1343.4 (meters)    4407 (feet)
Last report: 2002 MONUMENTED PROFLN
 
Nebraska
No information was found.
 
Nevada
 PID: DG4047     Geocaching details     NGS datasheet
Designation: BEATTY HIGH SCHOOL CENTER OF POPULATION
Date: 2003
Type: DD = SURVEY DISK
State and county: NV/NYE
Position: 36° 54' 03.7" (N)    116° 45' 25.4" (W)    Topozone
Altitude: 1000.5 (meters)    3282.47 (feet)
Last report: 2003 MONUMENTED NGS
 
New Hampshire
This station was dedicated Nov 21, 2003 but has not yet been accepted into the NGS database. It is located at the Pembroke Public Library, Pembroke, New Hampshire. Its approximate location is N 43° 09' 0.6" W 071° 27' 38.0" [thanks to king.hubi for the coordinates]
 
New Jersey
 PID: DE6224     Geocaching details     NGS datasheet
Designation: NEW JERSEY POPULATION CENTER
Date: December 08, 2001
Type: DO = NOT SPECIFIED OR SEE DESCRIPTION
State and county: NJ/MIDDLESEX
Position: 40° 27' 09.0" (N)    074° 26' 08.5" (W)    Topozone
Altitude: 8.5 (meters)    27.89 (feet)
Last report: 2007 GOOD AASCO
 
New Mexico
This monument is located in the campground of the Manzano Mountains State Park, near the flagpole. Its approximate location is N 34° 36' 11.5" W 106° 21' 40.7"
 
New York
 PID: DG9708     Geocaching details     NGS datasheet
Designation: NY CENTER OF POPULATION
Date: November 16, 2003
Type: DD = SURVEY DISK
State and county: NY/ORANGE
Position: 41° 27' 33.2" (N)    074° 36' 05.4" (W)    Topozone
Altitude: 153.1 (meters)    502. (feet)
Last report: 2003 MONUMENTED DELHUD
 
North Carolina
 PID: DI0243     Geocaching details     NGS datasheet
Designation: CENTER OF POPULATION
Date: 2003
Type: DD = SURVEY DISK
State and county: NC/RANDOLPH
Position: 35°33' 36.9" (N)    079° 39' 33.9" (W)    Topozone
Altitude: 162.15 (meters)    532.0 (feet)
Last report: 2005 GOOD NCGS
 
North Dakota
 PID: DH4421     Geocaching details     NGS datasheet
Designation: NORTH DAKOTA POPULATION CENTER
Date: Sep. 2003
Type: DO = NOT SPECIFIED OR SEE DESCRIPTION
State and county: ND/WELLS
Position: 47° 38' 40.8" (N)    099° 37' 42.8" (W)    Topozone
Altitude: 490.8 (meters)    1610 (feet)
Last report: 2004 GOOD NDSPLS
 
Ohio
 PID: DF5566     Geocaching details     NGS datasheet
Designation: OHIO CENTER OF POPULATION
Date: 2002
Type: DD = SURVEY DISK
State and county: OH/MORROW
Position: 40° 32' 56.7" (N)    082° 49' 36.4" (W)    Topozone
Altitude: 349.5 (meters)    1146.65 (feet)
Last report: 2006 GOOD INDIV
 
Oklahoma
No information was found.
 
Oregon
Oregon has not set a monument.
 
Pennsylvania
A monument was set March 15, 2002 in Veterans Memorial Park in Newport, Pennsylvania. The monument was an Eagle Scout project undertaken by Jonathan Rose of Altoona. [Thanks go to Shari Taylor of the Pennsylvania Society of Land Surveyors for this information.] The disk is located just outside the left field fence line of the park's baseball field. Its location is approximately N 40 28' 50.9" W 77 08' 00.4" [thanks to Ernmark for the coordinates.]
 
Rhode Island
On July 7, 2005 the Board of Directors of the Rhode Island Professional Land Surveyors chose a location for the monument. The location is a ledge outcrop along the median of Route 2 in Cranston, just south of the Pastore Building.
 
South Carolina
 PID: DG7240     Geocaching details     NGS datasheet
Designation: SOUTH CAROLINA POPULATION CTR
Date: 2004
Type: DO = NOT SPECIFIED OR SEE DESCRIPTION
State and county: SC/RICHLAND
Position: 33° 59' 59.1" (N)    081° 01' 58.3" (W)    Topozone
Altitude: 95.30 (meters)    312.66 (feet)
Last report: 2004 MONUMENTED SCGS
 
South Dakota
 PID: DF6326     Geocaching details     NGS datasheet
Designation: GANN VALLEY
Date: September 26, 2002
Type: DO = NOT SPECIFIED OR SEE DESCRIPTION
State and county: SD/BUFFALO
Position: 44° 01' 56.8" (N)    098° 59' 15.7" (W)    Topozone
Altitude: 520.2 (meters)    1707 (feet)
Last report: 2002 MONUMENTED SDDT
 
Tennesse
 PID: DG7704     Geocaching details     NGS datasheet
Designation: CENTER OF POPULATION
Date: October 10, 2003
Type: DD = SURVEY DISK
State and county: TN/RUTHERFORD
Position: 35° 47' 02.5" (N)    086° 24' 54.0" (W)    Topozone
Altitude: 191.9 (meters)    629.59 (feet)
Last report: 2007 GOOD TVA
 
Texas
This station was dedicated in 2002 but has not yet been accepted into the NGS database. It is located at Holland in Bell County, Texas at the First National Bank. Its location is approximately 30°52'46.1" N  97°24'19.4" W.
 
Utah
This station was set February 17, 2003, but has not yet been accepted into the NGS database. The monument is designated THANKSGIVING POINT at the Thanksgiving Point development in Lehi, Utah. Its location is approximately 40°25'33.9" N  111°53'13.9" W
 
Vermont
This station was dedicated in July 2002, but has not yet been accepted into the NGS database. It is located at approximately 44°05'21" (N) 072°29'14" (W) on Fuller Road in Warren, Vermont, approximately 0.64 miles NE of the state's Census 2002 center of population which is located at 44°04'52.05" N 72°48'51.51" W.      directions
 
Virginia
 PID: DF8080     Geocaching details     NGS datasheet
Designation: VIRGINIA CENTER OF POPULATION
Date: April 08, 2002
Type: DO = NOT SPECIFIED OR SEE DESCRIPTION
State and county: VA/GOOCHLAND
Position: 37° 43' 22.8" (N)    077° 49' 44.2" (W)    Topozone
Altitude: 92.4 (meters)    303.15 (feet)
Last report: 2006 GOOD USPSQD
 
Washington
 PID: DE6225     Geocaching details     NGS datasheet
Designation: WASHINGTON POPULATION CENTER
Date: April 2002
Type: DO = NOT SPECIFIED OR SEE DESCRIPTION
State and county: WA/KING
Position: 47° 19' 15.6" (N)    121° 54' 28.2" (W)    Topozone
Altitude: 230.8 (meters)    757.22 (feet)
Last report: 2002 GOOD NGS
 
West Virginia
The station has been set and was scheduled to be dedicated in the Spring or Summer of 2005. The GPS data has been submitted to the NGS, but the station is not yet listed in the NSRS database. The monument is located along Hwy 4 near I-79 exit 67 in Braxton County, West Virgina at approximately 38° 42' 04.4" N 80° 39' 45.9 W.
 
Wisconsin
 PID: DH5705     Geocaching details     NGS datasheet
Designation: WISCONSIN CENTER OF POPULATION
Date: 2000
Type: DD = SURVEY DISK
State and county: WI/GREEN LAKE
Position: 43° 43' 39.9" (N)    081° 00' 03.7" (W)    Topozone
Last report: 2007 GOOD WIDT
 
Wyoming
As of September 2002, work was underway to find a location for the station and set the monument. No other information was found.
 


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