Question: What type of high population density geographical region is Palmyra , Pennsylvania a part of?

Context paragraphs:
Komboni: A komboni is a type of compound or informal housing area common to Zambia, particularly the capital city of Lusaka.  It is characterized by a low income and a high population density.  Kombonis typically began as housing for employees of a particular company, estate, or mine.  An estimated 35% of Zambians live in urban areas, and kombonis exist in many of them.  It is estimated that 80% of the population of Lusaka live and work in these areas.

Rural Canada: Rural Canada has many faces and many dimensions (social, cultural, economic, etc.) but the common element of most conceptualizations of "rural" is the spatial dimension.  Rural is primarily low population density, small population size, and distance from high population density and big size.  Not surprisingly, the prevailing definitions of “rural” (in Canada as in most countries) emphasize this spatial dimension.  Rural Canada is usually defined by measures of population density, population size and distance from major agglomerations.

Floods in India: Flooding occurs when an extreme volume of water is carried by rivers, creeks and many other geographical features into areas where the water cannot be drained adequately.  Often during times of heavy rainfall, drainage systems in residential areas are not adequate, or unchecked civil development severely impedes the functionality of an otherwise acceptable drainage system.  Floods cause extremely large numbers of fatalities in every country, but due to India's extremely high population density and often under-enforced development standards, a large amount of damages and many deaths which could be otherwise avoided, are allowed to happen.  India witnesses flood due to excessive rain which then results in overflow of rivers, lakes and dams, which adds to cause large amounts of damage to people's lives and property.  In the past, India has witnessed many of the largest, most catastrophic floods, causing irreparable damage to people's livelihood, property, and crucial infrastructure.

Rio Mayo titi: The Rio Mayo titi ("Callicebus oenanthe") is a species of titi, a type of New World monkey, endemic to Peru. The Rio Mayo titi, was thought previously to have a small range of origin in the Alto Mayo valley, but research has proven that the range extends southward and reaches the Huayamba River, as well as Bajo Mayo.  It had been classified as vulnerable but due to major habitat loss and restricted living space, it is now classified as Critically Endangered.  In October 2012, it was included in The World's 25 Most Endangered Primates list.  An increase in deforestation is leading to the decrease in available living space for this Titi monkey, forcing it to live in sympatry with another species of Callicebus.  Yet in some areas, such drastic deforestation has resulted in extremely high population density.  The Rio Mayo Titi is better adapted to moderately populated areas, thus overpopulation negatively impacts the species.  The forests the Rio Mayo Titi lives in are being destroyed for agricultural purposes, leaving little forest for the monkeys.  They were only seen a few times and featured in museums until 2003 when more research was done on them.  In order for this species to survive, their forests need to be protected to avoid overpopulation.  Different conservation groups are working to help "C. oenanthe" survive.  Neotropical Primate Conservation, Proyecto Mono Tocón and Amazónicos para la Amazonia are working in the more southern areas to protect the monkey.

Palmyra, Pennsylvania: Palmyra is a borough in Lebanon County, Pennsylvania, United States.  It is part of the Lebanon, Pennsylvania Metropolitan statistical area.  The population was 7,096 at the 2000 census.

Metropolitan statistical area: In the United States, a metropolitan statistical area (MSA) is a geographical region with a relatively high population density at its core and close economic ties throughout the area.  Such regions are neither legally incorporated as a city or town would be, nor are they legal administrative divisions like counties or separate entities such as states.  As such, the precise definition of any given metropolitan area can vary with the source.  A typical metropolitan area is centered on a single large city that wields substantial influence over the region (e.g., Chicago or Atlanta).  However, some metropolitan areas contain more than one large city with no single municipality holding a substantially dominant position (e.g., Dallas–Fort Worth metroplex, Norfolk-Virginia Beach (Hampton Roads), Riverside–San Bernardino (Inland Empire) or Minneapolis–Saint Paul).

Environment of Belgium: The environment of Belgium is generally affected by the high population density in most of the country.  However, due to consistent efforts by the various levels of government in Belgium, the state of the environment in Belgium is gradually improving.  This led to Belgium being ranked as one of the top 10 countries (9 out of 132) in terms of environmental protection trends, and to Belgium being ranked in 2012 as the 24th country out of 132 for environmental protection.  However, water quality still suffers from a relatively low, yet increasing percentage of sewage waste-water treatment, and from historical pollution accumulated in sediments.  Air quality is generally good to average, but is affected by emissions from traffic and house heating, and industrial air pollution blowing over from the neighbouring heavily industrialised Ruhr-area in Germany.  Biodiversity is lower in Flanders than in Wallonia because of population density and fragmentation of habitats, but efforts are being made to boost bio-diversity through connecting fragmented forests and national parks through wildlife crossing "ecoducts" such as in Kikbeek.

Palmyra Area High School: Palmyra Area Senior High School (typically referred to as Palmyra High School or PHS) is a midsized public high school located in Palmyra, Pennsylvania, in the United States.  It is part of the Palmyra Area School District.  The school is located at 1125 Park Drive in North Londonderry Township serves students from the western part of Lebanon County, Pennsylvania and includes: Palmyra, North Londonderry Township, South Londonderry Township, the villages of Campbelltown, Lawn and Mount Gretna.  The school was founded in 1962.

Forest dormouse: The forest dormouse ("Dryomys nitedula") is a species of rodent in the family Gliridae found in eastern Europe, the Balkans and parts of western Central Asia.  It is categorized as being of least concern in the "IUCN List of Threatened Species" due to its wide range and stable population trend.  Forest dormice have a diploid count (2n) of 48 chromosomes.  Even though this species lives in a variety of geographic locations, its greatest population density is in the forests of central Moldova, in Transcaucasia, in the mountains of Central Asia.  In most other locations, population density of this species is rather low.  Population density is dependent on many factors.  But the main features that this species depends on for choosing a location are the presence of the appropriate food sources as well as good foliage that can be used for a habitat.  The reason why the forests in central Moldova have the highest population density is they provide the largest diversity of food sources which are available throughout the year.  This location also provides the best type of foliage for the forest dormice to build their nests as well as swing from branches.  The combination of both of these aspects allows for this species to have its highest needs met.  Therefore, during mating season they produce offspring who also stay in the same general area when they mature.  It makes sense not to move from an area if it is providing for your most basic needs.

South Yorkshire Fencing: South Yorkshire Fencing (SYF) is the organizing body for the sport of fencing in South Yorkshire.  It's a not-for-profit organization designed to promote the sport of fencing in the geographical area of South Yorkshire, and in particular in the high population density areas of Barnsley, Doncaster, Rotherham and Sheffield.

Supporting paragraphs: Palmyra, Pennsylvania Metropolitan statistical area
Answer: Metropolitan statistical area