Editing Mercer County, Pennsylvania (section)

==Communities==
[[File:Map of Mercer County Pennsylvania With Municipal and Township Labels.png|right|thumb|275px|Map of Mercer County, Pennsylvania with Municipal Labels showing Cities and Boroughs (red) and Townships (white)]]

Under Pennsylvania law, there are four types of incorporated municipalities: [[List of cities in Pennsylvania|cities]], [[List of towns and boroughs in Pennsylvania|boroughs]], [[List of townships in Pennsylvania|townships]], and, in one case, [[List of towns and boroughs in Pennsylvania#Towns|towns]]. The following cities, boroughs and townships are located in Mercer County:

===Cities===
*[[Farrell, Pennsylvania|Farrell]]
*[[Hermitage, Pennsylvania|Hermitage]] (largest city in Mercer County)
*[[Sharon, Pennsylvania|Sharon]]

===Boroughs===
{{div col|colwidth=22em}}
*[[Clark, Pennsylvania|Clark]]
*[[Fredonia, Pennsylvania|Fredonia]]
*[[Greenville, Pennsylvania|Greenville]]
*[[Grove City, Pennsylvania|Grove City]]
*[[Jackson Center, Pennsylvania|Jackson Center]]
*[[Jamestown, Pennsylvania|Jamestown]]
*[[Mercer, Pennsylvania|Mercer]] (county seat)
*[[New Lebanon, Pennsylvania|New Lebanon]]
*[[Sandy Lake, Pennsylvania|Sandy Lake]]
*[[Sharpsville, Pennsylvania|Sharpsville]]
*[[Sheakleyville, Pennsylvania|Sheakleyville]]
*[[Stoneboro, Pennsylvania|Stoneboro]]
*[[West Middlesex, Pennsylvania|West Middlesex]]
{{div col end}}

===Townships===
{{div col|colwidth=12em}}
*[[Coolspring Township, Mercer County, Pennsylvania|Coolspring]]
*[[Deer Creek Township, Mercer County, Pennsylvania|Deer Creek]]
*[[Delaware Township, Mercer County, Pennsylvania|Delaware]]
*[[East Lackawannock Township, Mercer County, Pennsylvania|East Lackawannock]]
*[[Fairview Township, Mercer County, Pennsylvania|Fairview]]
*[[Findley Township, Mercer County, Pennsylvania|Findley]]
*[[French Creek Township, Mercer County, Pennsylvania|French Creek]]
*[[Greene Township, Mercer County, Pennsylvania|Greene]]
*[[Hempfield Township, Mercer County, Pennsylvania|Hempfield]]
*[[Jackson Township, Mercer County, Pennsylvania|Jackson]]
*[[Jefferson Township, Mercer County, Pennsylvania|Jefferson]]
*[[Lackawannock Township, Mercer County, Pennsylvania|Lackawannock]]
*[[Lake Township, Mercer County, Pennsylvania|Lake]]
*[[Liberty Township, Mercer County, Pennsylvania|Liberty]]
*[[Mill Creek Township, Mercer County, Pennsylvania|Mill Creek]]
*[[New Vernon Township, Pennsylvania|New Vernon]]
*[[Otter Creek Township, Pennsylvania|Otter Creek]]
*[[Perry Township, Mercer County, Pennsylvania|Perry]]
*[[Pine Township, Mercer County, Pennsylvania|Pine]]
*[[Pymatuning Township, Pennsylvania|Pymatuning]]
*[[Salem Township, Mercer County, Pennsylvania|Salem]]
*[[Sandy Creek Township, Mercer County, Pennsylvania|Sandy Creek]]
*[[Sandy Lake Township, Mercer County, Pennsylvania|Sandy Lake]]
*[[Shenango Township, Mercer County, Pennsylvania|Shenango]]
*[[South Pymatuning Township, Pennsylvania|South Pymatuning]]
*[[Springfield Township, Mercer County, Pennsylvania|Springfield]]
*[[Sugar Grove Township, Mercer County, Pennsylvania|Sugar Grove]]
*[[West Salem Township, Pennsylvania|West Salem]]
*[[Wilmington Township, Mercer County, Pennsylvania|Wilmington]]
*[[Wolf Creek Township, Pennsylvania|Wolf Creek]]
*[[Worth Township, Mercer County, Pennsylvania|Worth]]
{{div col end}}

===Census-designated places===
*[[Lake Latonka, Pennsylvania|Lake Latonka]]
*[[Reynolds Heights, Pennsylvania|Reynolds Heights]]

===Unincorporated communities===
*Blacktown
*[[Briscoe Springs, Pennsylvania|Briscoe Springs]]
*[[Carlton, Pennsylvania|Carlton]]
* Charleston
*[[Clarks Mills, Pennsylvania|Clarks Mills]]
* Delaware Grove
*[[Fairview (village)]]
*[[Hadley, Pennsylvania|Hadley]]
*[[Kennard, Pennsylvania|Kennard]]
*Kremis
*London
*Maysville
*[[Milledgeville, Pennsylvania|Milledgeville]]
* New Vernon
* North Liberty
* Oniontown
*[[Osgood, Pennsylvania|Osgood]]
*[[Petersburg, Mercer County, Pennsylvania|Petersburg]]
*[[Shenango (village)]]
*[[Transfer, Pennsylvania|Transfer]]
*[[Williams Corners]]

===Former community===
*[[Hickory Township, Mercer County, Pennsylvania|Hickory Township]]-became the Municipality of Hermitage in 1976, and then the City of Hermitage in 1984.<ref>{{cite web|url=http://www.rootsweb.ancestry.com/~pamercer/PA/PL/ts/Hickory/hickory.htm|title=RootsWeb.com Home Page|website=www.rootsweb.ancestry.com}}</ref>
*[[Wheatland, Pennsylvania|Wheatland]]-annexed by the City of Hermitage in 2024.<ref>{{cite web |last1=Dye |first1=David L. |title=That's a wrap: Wheatland Borough Council meets for final time |url=https://www.sharonherald.com/news/thats-a-wrap-wheatland-borough-council-meets-for-final-time/article_d5ef0c6c-994c-11ee-8466-63e9f4569e2d.html |website=[[The Herald (Sharon)|The Herald]] |access-date=2 May 2024}}</ref> 

=== Mixed Nomenclature ===

* Borough of Greenville is also interchangeably designated as Town of Greenville with exact municipal designation currently unclear.

===Population ranking===
The population ranking of the following table is based on the [[2010 United States census|2010 census]] and [[2020 United States census|2020 census]] of Mercer County.<ref>{{Cite web|url=https://www.census.gov/programs-surveys/decennial-census/decade.2010.html|title=US Census Bureau 2010 Census|last=Promotions|first=Center for New Media and|website=www.census.gov|language=EN-US|access-date=March 23, 2018}}</ref>

'''†''' ''county seat''

{| class="wikitable sortable"
|-
!Rank
!City/Town/etc.
!Municipal type
!Population <br>(2010 Census)
!Population <br>(2020 Census)
|- style="background-color:#FFFACD;"
| 1
| '''[[Hermitage, Pennsylvania|Hermitage]]'''
| City
| 16,413
| 16,231
|- style="background-color:#FFFACD;"
| 2
| '''[[Sharon, Pennsylvania|Sharon]]'''
| City
| 14,021
| 13,150
|- style="background-color:#FFF5EE;"
| 3
| '''[[Grove City, Pennsylvania|Grove City]]'''
| Borough
| 8,334
| 7,884
|- style="background-color:#FFF5EE;"
| 4
| '''[[Greenville, Pennsylvania|Greenville]]'''
| Borough
| 5,953
| 5,540
|- style="background-color:#FFFACD;"
| 5
| '''[[Farrell, Pennsylvania|Farrell]]'''
| City
| 4,953
| 4,259
|- style="background-color:#FFF5EE;"
| 6
| '''[[Sharpsville, Pennsylvania|Sharpsville]]'''
| Borough
| 4,417
| 4,252
|- style="background-color:#FFF5EE;"
| 7
| '''†''' '''[[Mercer, Pennsylvania|Mercer]]'''
| Borough
| 2,042
| 1,985
|- style="background-color:#F0FFF0;"
| 8
| '''[[Reynolds Heights, Pennsylvania|Reynolds Heights]]'''
| CDP
| 2,061
| 1,974
|- style="background-color:#F0FFF0;"
| 9
| '''[[Lake Latonka, Pennsylvania|Lake Latonka]]'''
| CDP
| 1,012
| 951
|- style="background-color:#FFF5EE;"
| 10
| '''[[Stoneboro, Pennsylvania|Stoneboro]]'''
| Borough
| 1,051
| 947
|- style="background-color:#FFF5EE;"
| 11
| '''[[West Middlesex, Pennsylvania|West Middlesex]]'''
| Borough
| 863
| 816
|- style="background-color:#FFF5EE;"
| 12
| '''[[Sandy Lake, Pennsylvania|Sandy Lake]]'''
| Borough
| 657
| 650
|- style="background-color:#FFF5EE;"
| 13
| '''[[Wheatland, Pennsylvania|Wheatland]]'''
| Borough
| 632
| 583
|- style="background-color:#FFF5EE;"
| 14
| '''[[Jamestown, Pennsylvania|Jamestown]]'''
| Borough
| 617
| 582
|- style="background-color:#FFF5EE;"
| 15
| '''[[Clark, Pennsylvania|Clark]]'''
| Borough
| 640
| 575
|- style="background-color:#FFF5EE;"
| 16
| '''[[Fredonia, Pennsylvania|Fredonia]]'''
| Borough
| 494
| 435
|- style="background-color:#FFF5EE;"
| 17
| '''[[Jackson Center, Pennsylvania|Jackson Center]]'''
| Borough
| 224
| 191
|- style="background-color:#FFF5EE;"
| 18
| '''[[New Lebanon, Pennsylvania|New Lebanon]]'''
| Borough
| 189
| 185
|- style="background-color:#FFF5EE;"
| 19
| '''[[Sheakleyville, Pennsylvania|Sheakleyville]]'''
| Borough
| 142
| 150
|}