Editing Pittsburg, New Hampshire (section)

== Geography ==
Pittsburg shares an international border with [[Québec]] province, [[Canada]], to its west and north, and borders the states of [[Maine]] (to the east) and [[Vermont]] (a very small portion to the southwest). Directly to the south is [[Clarksville, New Hampshire|Clarksville]]. Pittsburg is the only New Hampshire municipality to border Canada, the only one that borders both Maine and Vermont, the only one to share a land border with Vermont, and the only town entirely north of the [[45th parallel north|45th parallel]]. Pittsburg contains the only part of New Hampshire west of the [[Connecticut River]], as that river defines the Vermont state line from Clarksville southward. The [[Pittsburg–Chartierville Border Crossing]], New Hampshire's only Canadian border crossing, is located in the town, at the northern terminus of [[U.S. Route 3]]. The western edge of Pittsburg is defined by [[Halls Stream]], being the "northwesternmost headwaters of the Connecticut River", which defined (ambiguously) the border in the [[Treaty of Paris (1783)|Treaty of Paris of 1783]].

Contained within the boundaries of Pittsburg are the [[Connecticut Lakes]], which form the beginning of the Connecticut River. Early maps (e.g. 1854) also show several grants that were incorporated into the eastern edge of Pittsburg, including ''Carlisle No. 1'', ''Webster/Carlisle No. 2'' and ''Hubbards No. 3'', all north of [[Atkinson and Gilmanton Academy Grant, New Hampshire|Atkinson and Gilmanton Academy Grant]].

According to the [[United States Census Bureau]], the town has a total area of {{convert|754.5|sqkm|order=flip}}, the largest in New Hampshire and New England of any municipality incorporated as a town. A total of {{convert|728.6|sqkm|order=flip}} of Pittsburg are land and {{convert|25.8|sqkm|order=flip}} are water, the latter comprising 3.43% of the town.<ref name="CenPopGazetteer2021"/>

The highest point in Pittsburg is the summit of Stub Hill, at {{convert|3627|ft|m}}. [[Mount Magalloway]], elevation {{convert|3383|ft|m}}, is a prominent summit reachable by hiking trail.

===Adjacent municipalities===
* [[Chartierville, Quebec]], Canada (north)
* [[Notre-Dame-des-Bois, Quebec]], Canada (northeast)
* [[North Oxford, Maine]] (east)
* [[Atkinson and Gilmanton Academy Grant, New Hampshire|Atkinson and Gilmanton Academy Grant]] (southeast)
* [[Clarksville, New Hampshire|Clarksville]] (south)
* [[Canaan, Vermont]] (southwest)
* [[East Hereford, Quebec]], Canada (west)
* [[Saint-Venant-de-Paquette, Quebec]], Canada (west)
* [[Saint-Malo, Quebec]], Canada (west)
* [[Saint-Isidore-de-Clifton, Quebec]], Canada (northwest)