- La Cañada Flintridge
- La Crosse
- La Fayette
- La Grange
- La Habra
- La Mesa
- La Mirada
- La Palma
- La Plata
- La Porte
- La Puente
- La Quinta
- La Vale
- La Vergne
- La Verne
- La Vista
- Lacey
- Lacey Township
- Lackawanna
- Laconia
- Ladera Ranch
- Lafayette
- Lafayette Hill
- Lafayette Township
- Lagos
- LaGrange
- Laguna
- Laguna Beach
- Laguna Hills
- Laguna Niguel
- Laguna Woods
- Lake Alfred
- Lake Arbor
- Lake Barrington
- Lake Bluff
- Lake Buena Vista
- Lake Charles
- Lake City
- Lake Crystal
- Lake Dallas
- Lake Elmo
- Lake Elsinore
- Lake Forest
- Lake Forest Park
- Lake Geneva
- Lake Havasu City
- Lake in the Hills
- Lake Jackson
- Lake Lillian
- Lake Lure
- Lake Mary
- Lake Mills
- Lake Oswego
- Lake Placid
- Lake Ridge
- Lake Saint Louis
- Lake Shore
- Lake Success
- Lake Wales
- Lake Winola
- Lake Worth
- Lake Wylie
- Lake Zurich
- Lakehurst
- Lakeland
- Lakemont
- Lakeside Park
- Lakeville
- Lakeway
- Lakewood
- Lakewood Ranch
- Lakewood Township
- Lamar
- Lambertville
- Lamesa
- Lampasas
- Lancaster
- Land O' Lakes
- Landenberg
- Lander
- Landisburg
- Landover Hills
- Langhorne
- Langley
- Langley Park
- Lanham
- Lansdale
- Lansdowne
- Lansing
- Lantana
- Lapeer
- Lapel
- LaPlace
- Lappeenranta
- Laramie
- Larchmont
- Laredo
- Largo
- Larkspur
- Larksville
- Las Cruces
- Las Vegas
- Latham
- Lathrop
- Lathrup Village
- Latrobe
- Latta
- Lauderdale Lakes
- Lauderdale-by-the-Sea
- Lauderhill
- Laurel
- Laurel Springs
- Laureldale
- Laurens
- Lausanne 18
- Lavallette
- Laverock
- Lawndale
- Lawrence
- Lawrence Township
- Lawrenceburg
- Lawrenceville
- Lawton
- Layton
- Laytonsville
- Le Center
- Le Roy
- Leacock-Leola-Bareville
- League City
- Leander
- Leavenworth
- Leawood
- Lebanon
- Lee
- Lee's Summit
- Leeds
- Leesburg
- Leesport
- Leetsdale
- Lehi
- Lehigh Acres
- Lehighton
- Leicester
- Leipsic
- Leitchfield
- Leland
- Lemont
- Lemont Furnace
- Lemoyne
- Lenexa
- Lenoir
- Lenoir City
- Lenox
- Leominster
- Leon
- Leonardtown
- Leonia
- Lester Prairie
- Letohatchee
- Levittown
- Lewes
- Lewis Center
- Lewisberry
- Lewisburg
- Lewiston
- Lewiston Woodville
- Lewistown
- Lewisville
- Lexington
- Lexington Park
- Liberty
- Liberty Lake
- Libertytown
- Libertyville
- Lido Beach
- Lighthouse Point
- Ligonier
- Lilburn
- Lima
- Limerick
- Lincoln
- Lincoln Park
- Lincoln University
- Lincolndale
- Lincolnia
- Lincolnshire
- Lincolnton
- Lincolnwood
- Lindale
- Linden
- Lindenhurst
- Lindenwold
- Lindon
- Lineboro
- Linesville
- Linkwood
- Lino Lakes
- Linthicum Heights
- Linwood
- Lisbon
- Lisle
- Litchfield
- Lithia Springs
- Lithonia
- Lititz
- Little Canada
- Little Chute
- Little Creek
- Little Egg Harbor Township
- Little Elm
- Little Falls
- Little Ferry
- Little Orleans
- Little River
- Little Rock
- Little Silver
- Littlestown
- Littleton
- Livermore
- Livermore Falls
- Liverpool
- Livingston
- Livonia
- Lloyd Harbor
- Loch Lynn Heights
- Lochearn
- Lock Haven
- Lockport
- Locust
- Locust Grove
- Locust Valley
- Lodi
- Logan
- Logan Township
- Logansport
- Loganville
- Lombard
- Lomita
- Lompoc
- Lonaconing
- London
- Londonderry
- Lone Tree
- Long Beach
- Long Beach Township
- Long Branch
- Long Green
- Long Grove
- Long Hill
- Long Neck
- Long Pond
- Longboat Key
- Longmeadow
- Longmont
- Longport
- Longs
- Longview
- Longwood
- Lonoke
- Lonsdale
- Lookout Mountain
- Loomis
- Lorain
- Loretto
- Lorton
- Los Alamitos
- Los Altos
- Los Angeles
- Los Banos
- Los Gatos
- Los Ranchos de Albuquerque
- Lost City
- Lothian
- Loudon
- Loudonville
- Louisa
- Louisburg
- Louisville
- Loveland
- Lovell
- Loves Park
- Lovettsville
- Loveville
- Lovingston
- Lowell
- Lowellville
- Loxahatchee
- Loxley
- Loyalhanna
- Loysville
- Lubbock
- Ludlow
- Lufkin
- Luke
- Luling
- Lumberton
- Lumberville
- Lunenburg
- Luray
- Lusby
- Lutcher
- Luthersburg
- Lutherville-Timonium
- Lutz
- Luzerne
- Lyme
- Lynbrook
- Lynchburg
- Lynden
- Lyndhurst
- Lynn
- Lynnfield
- Lynnwood
- Lynwood
- Lyons