# List of places in Pennsylvania: La–Ll

This list of cities, towns, unincorporated communities, counties, and other recognized places in the U.S. state of Pennsylvania also includes information on the number and names of counties in which the place lies, and its lower and upper Zip Code bounds, if applicable.
| Name of place | Number of counties | Principal county | Lower zip code | Upper zip code |
| La Anna | 1 | Pike County | 18326 | |
| La Belle | 1 | Fayette County | 15450 | |
| La Gonda | 1 | Washington County | 15301 | |
| La Jose | 1 | Clearfield County | 15753 | |
| La Mont | 1 | Elk County | | |
| La Mott | 1 | Montgomery County | 19117 | |
| La Plume | 1 | Lackawanna County | 18440 | |
| La Plume Township | 1 | Lackawanna County | | |
| La Trappe | 1 | Bucks County | | |
| Laboratory | 1 | Washington County | 15301 | |
| Laborde | 1 | Clearfield County | | |
| Labott | 1 | York County | 17364 | |
| Lacey Park | 1 | Bucks County | 18974 | |
| Laceyville | 1 | Wyoming County | 18623 | |
| Lack Township | 1 | Juniata County | | |
| Lackawannock Township | 1 | Mercer County | | |
| Lackawaxen | 1 | Pike County | 18435 | |
| Lackawaxen Township | 1 | Pike County | | |
| Laddsburg | 1 | Bradford County | 18833 | |
| Ladona | 1 | Potter County | 16915 | |
| Lafayette | 1 | McKean County | 16738 | |
| Lafayette Hill | 1 | Montgomery County | 19444 | |
| Lafayette Park | 1 | Montgomery County | 19444 | |
| Lafayette Township | 1 | McKean County | | |
| Lafayetteville | 1 | Bedford County | | |
| Lafferty Hill | 1 | Allegheny County | 15227 | |
| Laflin | 1 | Luzerne County | 18702 | |
| Lahaska | 1 | Bucks County | 18931 | 18938 |
| Laidig | 1 | Fulton County | | |
| Laings Garden | 1 | Bucks County | 19007 | |
| Laird | 1 | Armstrong County | 16262 | |
| Lairdsville | 1 | Lycoming County | 17742 | |
| Lake Ariel | 1 | Wayne County | 18436 | |
| Lake Carey | 1 | Wyoming County | 18657 | |
| Lake City | 1 | Elk County | | |
| Lake City | 1 | Erie County | 16423 | |
| Lake Como | 1 | Wayne County | 18437 | |
| Lake Denise | 1 | Westmoreland County | | |
| Lake Harmony | 1 | Carbon County | 18624 | |
| Lake Hauto | 2 | Carbon County | 18240 | |
| Lake Hauto | 2 | Schuylkill County | | |
| Lake Heritage | 1 | Adams County | | |
| Lake Lynn | 1 | Fayette County | 15451 | |
| Lake Meade | 1 | Adams County | | |
| Lake Naomi Estates | 1 | Monroe County | | |
| Lake Pleasant | 1 | Erie County | 16438 | |
| Lake Sheridan | 2 | Lackawanna County | 18446 | |
| Lake Sheridan | 2 | Wyoming County | 18446 | |
| Lake Township | 1 | Luzerne County | | |
| Lake Township | 1 | Mercer County | | |
| Lake Township | 1 | Wayne County | | |
| Lake Winola | 1 | Wyoming County | 18625 | |
| Lake Wynonah | 1 | Schuylkill County | | |
| Lakemont | 1 | Blair County | 16602 | |
| Lakeside | 1 | Bucks County | | |
| Lakeside | 1 | Susquehanna County | 18834 | |
| Laketon | 1 | Luzerne County | 18618 | |
| Laketon Heights | 1 | Allegheny County | 15235 | |
| Lakeview | 1 | Susquehanna County | 18847 | |
| Lakeview Heights | 1 | Dauphin County | 17111 | |
| Lakeville | 1 | Wayne County | 18438 | |
| Lakewood | 1 | Erie County | 16505 | |
| Lakewood | 1 | Wayne County | 18439 | |
| Lamar | 1 | Clinton County | 16848 | |
| Lamar Township | 1 | Clinton County | | |
| Lamartine | 1 | Clarion County | 16375 | |
| Lambert | 1 | Fayette County | 15458 | |
| Lamberton | 1 | Fayette County | 15458 | |
| Lambertsville | 1 | Somerset County | 15563 | |
| Lambs Creek | 1 | Tioga County | 16933 | |
| Lamokin Street | 1 | Delaware County | | |
| Lamokin Village | 1 | Delaware County | 19013 | |
| Lamonaville | 1 | Forest County | | |
| Lamonts Corners | 1 | Mercer County | | |
| Lampeter | 1 | Lancaster County | 17537 | |
| Lanark | 1 | Lehigh County | 18034 | |
| Lancaster | 1 | Lancaster County | 17601 | 08 |
| Lancaster Junction | 1 | Lancaster County | 17545 | |
| Lancaster Township | 1 | Butler County | | |
| Lancaster Township | 1 | Lancaster County | | |
| Lancasterville | 1 | Montgomery County | | |
| Landenberg | 1 | Chester County | 19350 | |
| Lander | 1 | Warren County | 16345 | |
| Landingville | 1 | Schuylkill County | 17942 | |
| Landis Farms | 1 | Lancaster County | 17601 | |
| Landis Store | 1 | Berks County | 19512 | |
| Landis Valley | 1 | Lancaster County | 17604 | |
| Landisburg | 1 | Perry County | 17040 | |
| Landisville | 1 | Bucks County | | |
| Landisville | 1 | Lancaster County | 17538 | |
| Landon Station | 1 | Fayette County | | |
| Landreth Manor | 1 | Bucks County | 19007 | |
| Landrus | 1 | Tioga County | | |
| Landstreet | 1 | Somerset County | 15935 | |
| Lane | 1 | Armstrong County | 16229 | |
| Lanes Mills | 1 | Jefferson County | 15824 | |
| Lanesboro | 1 | Susquehanna County | 18827 | |
| Laneville | 1 | Armstrong County | | |
| Langdon | 1 | Erie County | | |
| Langdon | 1 | Luzerne County | | |
| Langdon | 1 | Lycoming County | 17763 | |
| Langdondale | 1 | Bedford County | 16650 | |
| Langeloth | 1 | Washington County | 15054 | |
| Langford Hills | 1 | Delaware County | 19008 | |
| Langhorne | 1 | Bucks County | 19047 | |
| Langhorne Gables | 1 | Bucks County | 19047 | |
| Langhorne Gardens | 1 | Bucks County | 19047 | |
| Langhorne Manor | 1 | Bucks County | 19047 | |
| Langhorne Terrace | 1 | Bucks County | 19047 | |
| Langville | 1 | Jefferson County | | |
| Lansdale | 1 | Montgomery County | 19446 | |
| Lansdowne | 1 | Delaware County | 19050 | |
| Lansdowne Park Gardens | 1 | Delaware County | 19023 | |
| Lanse | 1 | Clearfield County | 16849 | |
| Lansford | 1 | Carbon County | 18232 | |
| Lantz | 1 | Northumberland County | | |
| Lantz Corners | 1 | McKean County | 16740 | |
| Lapark | 1 | Lancaster County | 17562 | |
| Lapidea Hills | 1 | Delaware County | 19086 | |
| Laporte | 1 | Sullivan County | 18626 | |
| Laporte Township | 1 | Sullivan County | | |
| Laquin | 1 | Bradford County | | |
| Larabee | 1 | McKean County | 16731 | |
| Larchmont | 1 | Delaware County | 19073 | |
| Larchmont Square | 1 | Delaware County | 19073 | |
| Lardintown | 1 | Butler County | 16055 | |
| Large | 1 | Allegheny County | 15025 | |
| Larimer | 1 | Westmoreland County | 15647 | |
| Larimer Township | 1 | Somerset County | | |
| Larke | 1 | Blair County | | |
| Larkin Corner | 1 | Delaware County | 19062 | |
| Larkin Knoll | 1 | Delaware County | 19061 | |
| Larkins Corner | 1 | Delaware County | 19061 | |
| Larksville | 1 | Luzerne County | 18704 | |
| Larrys Creek | 1 | Lycoming County | 17740 | |
| Larryville | 1 | Lycoming County | 17740 | |
| Larue | 1 | York County | 17327 | |
| Lash | 1 | Westmoreland County | | |
| Lashley | 1 | Fulton County | 17267 | |
| Lathrop Township | 1 | Susquehanna County | | |
| Latimore | 1 | Adams County | 17372 | |
| Latimore Township | 1 | Adams County | | |
| Latrobe | 1 | Westmoreland County | 15650 | |
| Latta Grove | 1 | Huntingdon County | | |
| Lattimer | 1 | Luzerne County | | |
| Lattimer Mines | 1 | Luzerne County | 18234 | |
| Laubachs | 1 | Columbia County | 17814 | |
| Lauffer | 1 | Westmoreland County | | |
| Laughlin Corner | 1 | Beaver County | 15043 | |
| Laughlin Junction | 1 | Allegheny County | | |
| Laughlintown | 1 | Westmoreland County | 15655 | |
| Laurel | 1 | Chester County | | |
| Laurel | 1 | Cumberland County | 17324 | |
| Laurel | 1 | York County | 17322 | |
| Laurel Bend | 1 | Bucks County | 19007 | |
| Laurel Falls | 1 | Somerset County | | |
| Laurel Gardens | 1 | Allegheny County | 15229 | |
| Laurel Gardens | 1 | Luzerne County | 18201 | |
| Laurel Grove | 1 | Franklin County | | |
| Laurel Hill | 1 | Fayette County | 15431 | |
| Laurel Hill | 1 | Lancaster County | | |
| Laurel Hill | 1 | Philadelphia County | | |
| Laurel Hill | 1 | Washington County | 15057 | |
| Laurel Junction | 1 | Schuylkill County | | |
| Laurel Lake | 1 | Susquehanna County | 18812 | |
| Laurel Mount Boro | 1 | Westmoreland County | 15601 | |
| Laurel Mountain | 1 | Westmoreland County | 15655 | |
| Laurel Mountain Village | 1 | Somerset County | | |
| Laurel Park | 1 | Union County | 17845 | |
| Laurel Run | 1 | Luzerne County | 18702 | |
| Laurel Summit | 1 | Somerset County | | |
| Laureldale | 1 | Berks County | 19605 | |
| Laurella | 1 | Wayne County | | |
| Laurelton | 1 | Union County | 17835 | |
| Laurelville | 1 | Fayette County | 15666 | |
| Laurelville | 1 | Lancaster County | 17557 | |
| Laurys Station | 1 | Lehigh County | 18059 | |
| Lausanne Township | 1 | Carbon County | | |
| Lavansville | 1 | Somerset County | 15501 | |
| Lavelle | 1 | Schuylkill County | 17943 | |
| Laverock | 1 | Montgomery County | 19118 | |
| Lavery | 1 | Erie County | | |
| Lawn | 1 | Lebanon County | 17041 | |
| Lawndale | 1 | Philadelphia County | 19111 | |
| Lawnton | 1 | Dauphin County | 17111 | |
| Lawrence | 1 | Washington County | 15055 | |
| Lawrence Corners | 1 | Tioga County | | |
| Lawrence Junction | 1 | Lawrence County | | |
| Lawrence Park | 1 | Delaware County | 19008 | |
| Lawrence Park | 1 | Erie County | 16511 | |
| Lawrence Park Township | 1 | Erie County | | |
| Lawrence Township | 1 | Clearfield County | | |
| Lawrence Township | 1 | Tioga County | | |
| Lawrenceville | 1 | Allegheny County | | |
| Lawrenceville | 1 | Lackawanna County | 18642 | |
| Lawrenceville | 1 | Tioga County | 16929 | |
| Lawson Heights | 1 | Westmoreland County | 15650 | |
| Lawsonham | 1 | Clarion County | 16248 | |
| Lawsville Center | 1 | Susquehanna County | 18801 | |
| Lawton | 1 | Susquehanna County | 18828 | |
| Layfield | 1 | Montgomery County | 19525 | |
| Layton | 1 | Fayette County | 15473 | |
| Le Boeuf Gardens | 1 | Erie County | 16441 | |
| Le Raysville | 1 | Bradford County | 18829 | |
| Leacock | 1 | Lancaster County | 17540 | |
| Leacock-Leola-Bareville | 1 | Lancaster County | | |
| Leacock Township | 1 | Lancaster County | | |
| Leaders Heights | 1 | York County | 17403 | |
| Leaf Park | 1 | Lancaster County | 17603 | |
| League Island | 1 | Philadelphia County | | |
| Leak Run | 1 | Allegheny County | 15146 | |
| Leaman Place | 1 | Lancaster County | 17562 | |
| Leaman Place Junction | 1 | Lancaster County | | |
| Leamersville | 1 | Blair County | 16635 | |
| Learn Settlement | 1 | Indiana County | | |
| Leasuresville | 1 | Butler County | 16055 | |
| Leather Corner Post | 1 | Lehigh County | 18069 | |
| Leatherwood | 1 | Clarion County | 16242 | |
| Lebanon | 1 | Lebanon County | 17042 | |
| Lebanon Church | 1 | Allegheny County | 15122 | |
| Lebanon South | 1 | Lebanon County | 17042 | |
| Lebanon Township | 1 | Wayne County | | |
| Lebo | 1 | Perry County | 17040 | |
| Le Boeuf Township | 1 | Erie County | | |
| Lebo Vista | 1 | Lycoming County | | |
| Leck Kill | 1 | Northumberland County | 17836 | |
| Leckrone | 1 | Fayette County | 15454 | |
| Lecontes Mills | 1 | Clearfield County | 16850 | |
| Lederach | 1 | Montgomery County | 19450 | |
| Ledgedale | 1 | Wayne County | 18463 | |
| Ledger | 1 | Lancaster County | | |
| Ledy | 1 | Franklin County | | |
| Lee | 1 | Luzerne County | 18617 | |
| Lee Mine | 1 | Luzerne County | 18634 | |
| Lee Park | 1 | Luzerne County | 18702 | |
| Leechburg | 1 | Allegheny County | | |
| Leechburg | 1 | Armstrong County | 15656 | |
| Leechs Corners | 1 | Mercer County | | |
| Leedon Estates | 1 | Delaware County | 19078 | |
| Leedon Gardens | 1 | Delaware County | 19078 | |
| Leeper | 1 | Clarion County | 16233 | |
| Lees Cross Roads | 1 | Cumberland County | 17257 | |
| Lees Mill | 1 | Chester County | | |
| Leesburg | 1 | Mercer County | 16156 | |
| Leesburg Station | 1 | Mercer County | | |
| Leesport | 1 | Berks County | 19533 | |
| Leet Township | 1 | Allegheny County | | |
| Leetonia | 1 | Tioga County | 17727 | |
| Leetsdale | 1 | Allegheny County | 15056 | |
| Lehigh | 1 | Lackawanna County | 18424 | |
| Lehigh Furnace | 1 | Lehigh County | 18080 | |
| Lehigh Gap | 1 | Carbon County | | |
| Lehigh Gap | 1 | Lehigh County | 18080 | |
| Lehigh Tannery | 1 | Carbon County | | |
| Lehigh Township | 1 | Carbon County | | |
| Lehigh Township | 1 | Lackawanna County | | |
| Lehigh Township | 1 | Northampton County | | |
| Lehigh Township | 1 | Wayne County | | |
| Lehigh University | 1 | Northampton County | 18015 | |
| Lehigh Valley | 1 | Lehigh County | 18001 | |
| Lehigh Valley Facility | 1 | Lehigh County | 18001 | |
| Lehighton | 1 | Carbon County | 18235 | |
| Lehman | 1 | Luzerne County | 18627 | |
| Lehman | 1 | York County | 17362 | |
| Lehman Township | 1 | Luzerne County | | |
| Lehman Township | 1 | Pike County | | |
| Lehmasters | 1 | Franklin County | | |
| Leibeyville | 1 | Schuylkill County | 17960 | |
| Leidighs | 1 | Cumberland County | | |
| Leidy | 1 | Clinton County | 17764 | |
| Leidy Township | 1 | Clinton County | | |
| Leidytown | 1 | Bucks County | | |
| Leinbachs | 1 | Berks County | 19605 | |
| Leiperville | 1 | Delaware County | | |
| Leiphart Mill | 1 | York County | | |
| Leisenring | 1 | Fayette County | 15455 | |
| Leisenring Number 3 | 1 | Fayette County | | |
| Leith | 1 | Fayette County | 15401 | |
| Leith-Hatfield | 1 | Fayette County | | |
| Leithsville | 1 | Northampton County | 18055 | |
| Lemasters | 1 | Franklin County | 17231 | |
| Lemon | 1 | Wyoming County | | |
| Lemon Township | 1 | Wyoming County | | |
| Lemont | 1 | Centre County | 16851 | |
| Lemont Furnace | 1 | Fayette County | 15456 | |
| Lemoyne | 1 | Cumberland County | 17043 | |
| Lemoyne-Camp Hill | 1 | Cumberland County | | |
| Lenape | 1 | Chester County | 19380 | |
| Lenape Heights | 1 | Armstrong County | 16226 | |
| Lenape Park | 1 | Armstrong County | 16226 | |
| Lenhartsville | 1 | Berks County | 19534 | |
| Lenker Manor | 1 | Dauphin County | 17111 | |
| Lenkerville | 1 | Dauphin County | 17061 | |
| Lenni | 1 | Delaware County | 19052 | |
| Lenni Heights | 1 | Delaware County | 19037 | |
| Lenni Mills | 1 | Delaware County | | |
| Lennox Park | 1 | Delaware County | 19015 | |
| Lenover | 1 | Chester County | 19365 | |
| Lenox | 1 | Susquehanna County | | |
| Lenox Township | 1 | Susquehanna County | | |
| Lenoxville | 1 | Susquehanna County | 18441 | |
| Leola | 1 | Lancaster County | 17540 | |
| Leolyn | 2 | Lycoming County | 17765 | |
| Leolyn | 2 | Tioga County | 17765 | |
| Leona | 1 | Bradford County | 16947 | |
| Leonard | 1 | Clearfield County | 16830 | |
| Leonardsville | 1 | Carbon County | | |
| Leopard | 1 | Chester County | 19312 | |
| Leopard Lakes | 1 | Chester County | 19312 | |
| Lerchs | 1 | Northampton County | | |
| Lernerville | 1 | Butler County | | |
| Leroy | 1 | Bradford County | 17743 | |
| Leroy Township | 1 | Bradford County | | |
| Leslie Run | 1 | Carbon County | | |
| Lester | 1 | Delaware County | 19029 | |
| Letort | 1 | Lancaster County | 17582 | |
| Letterkenny Army Depot | 1 | Franklin County | 17201 | |
| Letterkenny Township | 1 | Franklin County | | |
| Level Corner | 1 | Lycoming County | 17744 | |
| Level Green | 1 | Westmoreland County | 15085 | |
| Leviston | 1 | Carbon County | | |
| Levittown | 1 | Bucks County | 19053 | 59 |
| Levittown-Tullytown | 1 | Bucks County | | |
| Lewis Corners | 1 | Susquehanna County | | |
| Lewis Mills | 1 | Chester County | | |
| Lewis Run | 1 | McKean County | 16738 | |
| Lewis Run Junction | 1 | Allegheny County | | |
| Lewis Township | 1 | Lycoming County | | |
| Lewis Township | 1 | Northumberland County | | |
| Lewis Township | 1 | Union County | | |
| Lewisberry | 1 | York County | 17339 | |
| Lewisburg | 1 | Union County | 17837 | |
| Lewistown | 1 | Mifflin County | 17044 | |
| Lewistown | 1 | Schuylkill County | 18252 | |
| Lewistown Junction | 1 | Mifflin County | 17044 | |
| Lewisville | 1 | Chester County | 19351 | |
| Lewisville | 1 | Indiana County | 15725 | |
| Lewisville (Ulysses after 1968) | 1 | Potter County | | |
| Lexington | 1 | Lancaster County | 17543 | |
| Liberty | 1 | Allegheny County | 15133 | |
| Liberty | 1 | Fayette County | | |
| Liberty | 1 | McKean County | | |
| Liberty | 1 | Tioga County | 16930 | |
| Liberty Corners | 1 | Bradford County | 18848 | |
| Liberty Square | 1 | Lancaster County | 17518 | |
| Liberty Township | 1 | Adams County | | |
| Liberty Township | 1 | Bedford County | | |
| Liberty Township | 1 | Centre County | | |
| Liberty Township | 1 | McKean County | | |
| Liberty Township | 1 | Mercer County | | |
| Liberty Township | 1 | Montour County | | |
| Liberty Township | 1 | Susquehanna County | | |
| Liberty Township | 1 | Tioga County | | |
| Library | 1 | Allegheny County | 15129 | |
| Library Junction | 1 | Washington County | | |
| Lickdale | 1 | Lebanon County | | |
| Licking Creek Township | 1 | Fulton County | | |
| Licking Township | 1 | Clarion County | | |
| Lickingville | 1 | Clarion County | 16332 | |
| Liewellyn Corners | 1 | Luzerne County | | |
| Lightner | 1 | York County | 17404 | |
| Lightstreet | 1 | Columbia County | 17839 | |
| Ligonier | 1 | Westmoreland County | 15658 | |
| Ligonier Township | 1 | Westmoreland County | | |
| Lilly | 1 | Cambria County | 15938 | |
| Lilly Run Junction | 1 | Fayette County | | |
| Lillyville | 1 | Beaver County | 16123 | |
| Lima | 1 | Delaware County | 19037 | |
| Lime Bluff | 1 | Lycoming County | | |
| Limehill | 1 | Bradford County | 18853 | |
| Limekiln | 1 | Berks County | 19535 | |
| Limeport | 1 | Lehigh County | 18060 | |
| Lime Ridge | 1 | Columbia County | 17815 | |
| Lime Valley | 1 | Lancaster County | 17584 | |
| Limerick | 1 | Montgomery County | 19468 | |
| Limerick Center | 1 | Montgomery County | | |
| Limerick Township | 1 | Montgomery County | | |
| Limerock | 1 | Lancaster County | 17543 | |
| Limestone | 1 | Clarion County | 16234 | |
| Limestone Township | 1 | Clarion County | | |
| Limestone Township | 1 | Lycoming County | | |
| Limestone Township | 1 | Montour County | | |
| Limestone Township | 1 | Union County | | |
| Limestone Township | 1 | Warren County | | |
| Limestoneville | 1 | Montour County | 17847 | |
| Limestown Township | 1 | Warren County | 16351 | |
| Limeville | 1 | Lancaster County | 17527 | |
| Lincoln | 1 | Allegheny County | 15037 | |
| Lincoln | 1 | Lancaster County | 17522 | |
| Lincoln Acres | 1 | Westmoreland County | 15642 | |
| Lincoln Colliery | 1 | Schuylkill County | 17963 | |
| Lincoln Falls | 1 | Sullivan County | | |
| Lincoln Heights | 1 | Berks County | 19508 | |
| Lincoln Heights | 1 | Westmoreland County | 15644 | |
| Lincoln Hill | 1 | Washington County | 15301 | |
| Lincoln Park | 1 | Allegheny County | 15235 | |
| Lincoln Park | 1 | Berks County | 19609 | |
| Lincoln Park | 1 | Delaware County | 19079 | |
| Lincoln Park | 1 | Northampton County | | |
| Lincoln Place | 1 | Allegheny County | | |
| Lincoln Terrace | 1 | Northampton County | 18042 | |
| Lincoln Township | 1 | Bedford County | | |
| Lincoln Township | 1 | Huntingdon County | | |
| Lincoln Township | 1 | Somerset County | | |
| Lincoln University | 1 | Chester County | 19352 | |
| Lincolnville | 1 | Crawford County | 16404 | |
| Lincolnway | 1 | York County | 17404 | |
| Linconia | 1 | Bucks County | 19047 | |
| Lindaville | 1 | Susquehanna County | 18824 | |
| Lindberg Heights | 1 | Montgomery County | | |
| Lindberg Terrace | 1 | Montgomery County | 19468 | |
| Lindbergh | 1 | Luzerne County | | |
| Linden | 1 | Lycoming County | 17744 | |
| Linden | 1 | Washington County | 15317 | |
| Linden Grove | 1 | Allegheny County | | |
| Linden Hall | 1 | Centre County | 16828 | |
| Lindenhurst | 1 | Bucks County | 19068 | |
| Lindner | 1 | Schuylkill County | | |
| Linds Crossing | 1 | Blair County | | |
| Lindsey | 1 | Jefferson County | 15767 | |
| Line Lexington | 1 | Bucks County | 18932 | |
| Line Mountain | 1 | Northumberland County | 17941 | |
| Linesville | 1 | Crawford County | 16424 | |
| Linfield | 1 | Montgomery County | 19468 | |
| Linglestown | 1 | Dauphin County | 17112 | |
| Linhart | 1 | Allegheny County | 15145 | |
| Link Belt | 1 | Montgomery County | | |
| Linn | 1 | Fayette County | 15442 | |
| Linntown | 1 | Union County | 17837 | |
| Linville Circle | 1 | Lancaster County | | |
| Linwood | 1 | Delaware County | 19061 | |
| Linwood Park | 1 | Delaware County | 19062 | |
| Linwood Terrace | 1 | Delaware County | 19061 | |
| Lionville | 1 | Chester County | 19353 | |
| Lionville-Marchwood | 1 | Chester County | | |
| Lippincott | 1 | Greene County | 15370 | |
| Lisbon | 1 | Venango County | | |
| Lisburn | 1 | Cumberland County | 17055 | |
| Listie | 1 | Somerset County | 15549 | |
| Listonburg | 1 | Somerset County | 15424 | |
| Litchfield | 1 | Bradford County | 18810 | |
| Litchfield Township | 1 | Bradford County | | |
| Lithia Springs | 1 | Northumberland County | 17857 | |
| Lithia Valley | 1 | Wyoming County | 18419 | |
| Lititz | 1 | Lancaster County | 17543 | |
| Little Beaver Township | 1 | Lawrence County | | |
| Little Britain | 1 | Lancaster County | 17566 | |
| Little Britain Township | 1 | Lancaster County | | |
| Little Chapel | 1 | Wayne County | 18436 | |
| Little Chicago | 1 | Greene County | 15320 | |
| Little Cooley | 1 | Crawford County | 16404 | |
| Little Corners | 1 | Crawford County | 16335 | |
| Little Gap | 1 | Carbon County | 18058 | |
| Little Germany | 1 | Perry County | 17024 | |
| Little Hickory | 1 | Forest County | | |
| Little Hope | 1 | Erie County | 16428 | |
| Little Italy | 1 | Bucks County | 18956 | |
| Little Jack Corners | 1 | Bedford County | | |
| Little Kansas | 1 | Mifflin County | 17051 | |
| Little Mahanoy Township | 1 | Northumberland County | | |
| Little Marsh | 1 | Tioga County | 16950 | |
| Little Meadows | 1 | Susquehanna County | 18830 | |
| Little Roundtop | 1 | Juniata County | | |
| Little Summit | 1 | Fayette County | | |
| Little Summit | 1 | Monroe County | | |
| Little Summit | 1 | Washington County | | |
| Littletown | 1 | Indiana County | | |
| Little Washington | 1 | Chester County | | |
| Little Washington | 1 | Cumberland County | 17241 | |
| Littles Corners | 1 | Crawford County | 16335 | |
| Littlestown | 1 | Adams County | 17340 | |
| Live Easy | 1 | Greene County | 15320 | |
| Liverpool | 1 | Perry County | 17045 | |
| Liverpool Township | 1 | Perry County | | |
| Livonia | 1 | Centre County | 16872 | |
| Lizard Creek Junction | 1 | Carbon County | | |
| Llandrilla | 1 | Montgomery County | 19004 | |
| Llanerch | 1 | Delaware County | | |
| Llanerch Manor | 1 | Delaware County | 19083 | |
| Llanfair | 1 | Cambria County | 15930 | |
| Llangelan Hills | 1 | Delaware County | 19073 | |
| Llewellyn | 1 | Schuylkill County | 17944 | |
| Llewelyn Corners | 1 | Luzerne County | | |
| Lloydell | 1 | Cambria County | 15921 | |
| Lloydsville | 1 | Westmoreland County | 15650 | |
| Lloydville | 1 | Cambria County | | |
| Llyswen | 1 | Blair County | | |