Tri-State Marker

Tri-State Marker is a historic site in Delaware, at a recorded elevation of 78 m. Gap Hill stands 252 m to the north-northwest, 21 miles off. The nearest named place is Carpenter Recreation Area, a park 0.7 miles away. Mason and Dixon Byway passes 1.8 miles off. 29 named summits stand within 25 miles.
M. D. P. Corner No 2 1935
The story
The Delaware–Maryland–Pennsylvania Tri-State Point is the meeting of the northwestern corner of Delaware, the northeastern corner of Maryland, and the southern edge of Pennsylvania. A wooden marker was placed in 1765, by Charles Mason and Jeremiah Dixon, and was replaced with a stone marker in 1849. The tripoint site contributes to the Delaware Boundary Markers historic district, listed on the National Register of Historic Places in 1975. A trail to the marker was made in 2014–2015.
From Wikipedia, CC BY-SA 4.0.
Dates from 1849.
Wikidata Q48799760, referenced by the OpenStreetMap record.
What the record says
- Elevation
- 78 m
- Inscription
- Top: U.S. COAST & GEODETIC SURVEY REFERENCE MARK / FOR INFORMATION WRITE TO THE DIRECTOR, WASHINGTON, D.C. / $2500 FINE OR IMPRISONMENT FOR DISTURBING THIS MARK. / MD P CORNER NO 2 1935 Side 1: M Side 2: M Side 3: P 1849 Side 4: D
How to reach it
- 1.8 mi off the Mason and Dixon Byway
- 8.5 mi off the Red Clay Valley Scenic Byway
- 11.5 mi off the Brandywine Valley Scenic Byway, National
- 13.4 mi off the Chesapeake Country Scenic Byway, National
Overlooks nearby
- Hawk Point · 12 mi
Named places within 25 miles
- Carpenter Recreation Area: 0.7 mi
- Nichols Park: 1.7 mi
- Fishing Bench and Pier: 1.7 mi
- Fairfield Park: 2.1 mi
- Fairfield Crest Park: 2.3 mi
- Arc Corner Monument: 0.8 mi
- Minguannan Indian Town Marker: 1.8 mi
- Alexander Ruins: 2.1 mi
- Alexander Ruins: 2.1 mi
- McCloskey Ruins: 2.6 mi
- Chambers House Nature Center: 1.1 mi
- William M. Redd, Jr. Park: 2.8 mi
- Kershaw Park: 3.1 mi
- Peacedale Preserve: 3.3 mi
- Middle Run Natural Area: 3.5 mi
- Historical Society of Cecil County: 8.1 mi
- Israel Marshall House: 8.3 mi
- Bellanca Airfield Museum: 11.4 mi
- Winterthur Museum: 11.5 mi
- Henry Clay Factory: 11.8 mi
- Worrilow Garden: 4.3 mi
- Clark Garden: 4.4 mi
- Native Garden: 4.4 mi
- Herbaceous Garden: 4.4 mi
- Lepidoptera Trail, & Successional Woods: 4.5 mi
- Rudolph and Arthur Covered Bridge: 5.2 mi
- Wilmington & Western Railroad: 8.4 mi
- Sundial: 11.7 mi
- Sycamore with Cement Core: 11.8 mi
- Historic Pump Room & Gallery: 11.8 mi
- Drummond Hill: 4.2 mi
- Chestnut Hill: 5.0 mi
- Grays Hill: 6.0 mi
- Iron Hill: 6.1 mi
- Egg Hill: 7.3 mi
- Wings of Thought: 3.5 mi
- Chloe & Lucinda (Nubian Goats): 3.7 mi
- The Student: 3.9 mi
- Hammering Heart: 8.1 mi
- Admiral Francis Dupont Statue: 11.7 mi
- Picnic Area: 11.6 mi
- Deer Creek Picnic Area: 20.9 mi
- Ridley Creek State Park - Area 12 Picnic Site: 23.4 mi
- Ridley Creek State Park - Area 13 Picnic Site: 23.5 mi
- Ridley Creek State Park - Area 15 Picnic Site: 23.5 mi
- Glenville: 7.9 mi
- Frenchtown: 10.2 mi
- Lapidum: 20.0 mi
- Darling: 21.0 mi
- Milford Mills: 23.9 mi
- Deemer's Beach: 11.9 mi
- Roachs Shore: 15.7 mi
- Oakwood Beach: 18.4 mi
- Garrett Island Beach: 19.1 mi
- North East Beach Area: 19.1 mi
- The Eye: 19.0 mi
- White Banks: 20.0 mi
- Wildcat Point: 23.1 mi
- Black Rock Spring: 19.8 mi
- Black Barren Spring: 21.3 mi
- Bethel Bridge Lighthouse (replica): 13.5 mi
- Deepwater Rest Area: 16.8 mi
Summits around it
The highest named summits within 25 miles of Tri-State Marker. Elevation from each summit’s own record; bearing measured between the two coordinates.
| Summit | Bearing | Elevation | Distance |
|---|---|---|---|
| Gap Hill | NNW 328° | 252 m | 21.4 mi |
| Harmony Hill | NNE 18° | 146 m | 18.9 mi |
| Mount Felix | WSW 240° | 142 m | 21.0 mi |
| Ebright Azimuth | ENE 61° | 137 m | 16.3 mi |
| Goat Hill | W 270° | 135 m | 15.9 mi |
| Mount Ararat | WSW 241° | 134 m | 18.1 mi |
| Egg Hill | SW 234° | 125 m | 7.3 mi |
| Hunting Hill | NE 47° | 125 m | 24.3 mi |
When to go
Light through the year
| Date | Sunrise | Golden hour | Sunset |
|---|---|---|---|
| March equinox | 07:08 | 18:40 | 19:15 |
| June solstice | 05:36 | 19:55 | 20:35 |
| September equinox | 06:51 | 18:26 | 19:02 |
| December solstice | 07:21 | 16:00 | 16:43 |
Local time (America/New_York).
Climate normals
Months averaging 50–80 °F: Apr–Oct.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °F | 34 | 36 | 44 | 55 | 64 | 73 | 78 | 76 | 69 | 58 | 46 | 38 |
| Precip in | 3.4 | 2.9 | 4.3 | 3.7 | 3.6 | 3.9 | 4.8 | 3.9 | 4.9 | 4.0 | 3.4 | 4.0 |
1991–2020 U.S. Climate Normals, NOAA NCEI — Newark AG Farm, 4 mi away.
Where this comes from
Location and category confirmed against OpenStreetMap.
OpenStreetMapWikipediaWikidataOpenStreetMap element node/75390099
Day trips start here
- Newark · 3 mi
- Hockessin · 7 mi
- West Grove · 7 mi
- Kennett Square · 9 mi
- Oxford · 11 mi
- Chesapeake City · 13 mi
Take the scenic way to Tri-State Marker.
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