Editing Marietta, Pennsylvania (section)

==Geography==
Marietta is located in western Lancaster County at {{coord|40|3|26|N|76|33|21|W|type:city}} (40.057169, -76.555955).<ref name="GR1">{{cite web|url=https://www.census.gov/geographies/reference-files/time-series/geo/gazetteer-files.html|publisher=[[United States Census Bureau]]|access-date=2011-04-23|date=2011-02-12|title=US Gazetteer files: 2010, 2000, and 1990}}</ref> It is bordered to the north, east, and west by [[East Donegal Township, Pennsylvania|East Donegal Township]], and to the south, across the Susquehanna River, by [[Hellam Township, Pennsylvania|Hellam Township]] in [[York County, Pennsylvania|York County]].

According to the [[United States Census Bureau|U.S. Census Bureau]], the borough has a total area of {{convert|0.75|sqmi|km2}}, of which {{convert|0.007|sqmi|3}}, or 0.93%, are water.<ref name="CenPopGazetteer2019">{{cite web|title=2019 U.S. Gazetteer Files|url=https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2019_Gazetteer/2019_gaz_place_42.txt|publisher=United States Census Bureau|access-date=July 28, 2020}}</ref>

Market Street runs the whole length of the town. The east/west divider is Waterford Avenue. [[Pennsylvania Route 441]] passes just north of the borough and forms part of its northeastern border; the highway leads southeast {{convert|3.5|mi}} to Columbia and northwest (upriver) {{convert|15|mi}} to [[Middletown, Dauphin County, Pennsylvania|Middletown]].