Lanark is a small unincorporated village located in Upper Saucon Township in

Lehigh County, Pennsylvania Lehigh County (; Pennsylvania Dutch language, Pennsylvania Dutch: ''Lechaa Kaundi'') is a County (United States), county in the Commonwealth (U.S. state), Commonwealth of Pennsylvania. As of the 2020 United States census, 2020 census, the coun ...

. It is part of the

Lehigh Valley The Lehigh Valley () is a geography, geographic and urban area, metropolitan region formed by the Lehigh River in Lehigh County, Pennsylvania, Lehigh and Northampton County, Pennsylvania, Northampton counties in eastern Pennsylvania. It is a co ...

, the third-largest metropolitan area in

Pennsylvania Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...

. Residents of Lanark are served by the Center Valley and Coopersburg Post Offices with ZIP Code of 18034 and 18036, respectively. Lanark is located in

Southern Lehigh School District Southern Lehigh School District is a public school district located in Lehigh County, Pennsylvania. It serves the borough of Coopersburg and Lower Milford and Upper Saucon townships in the Lehigh Valley region of eastern Pennsylvania. Stude ...

, and students in grades nine through twelve attend

Southern Lehigh High School Southern Lehigh High School is a four-year public high school located in Center Valley, Pennsylvania in the Lehigh Valley region of eastern Pennsylvania. It is the only high school in the Southern Lehigh School District. As of the 2023-24 school ...

. The community was named after

Lanark Lanark ( ; ; ) is a town in South Lanarkshire, Scotland, located 20 kilometres to the south-east of Hamilton, South Lanarkshire, Hamilton. The town lies on the River Clyde, at its confluence with Mouse Water. In 2016, the town had a populatio ...

, Scotland. Located at the southeastern end of a pass over South Mountain, Lanark is a significant crossroads. Limeport Pike heads south, Vera Cruz Road heads southwest, Saucon Valley Road heads east, and Lanark Road heads southeast.

Interstate 78 Interstate 78 (I-78) is an east–west Interstate Highway in the Northeastern United States that runs from I-81 northeast of Harrisburg, Pennsylvania, through Allentown to western and North Jersey, terminating at the Holland Tunnel entra ...

approaches from the northeast,

Pennsylvania Route 309 Pennsylvania Route 309 (PA 309) is a state highway that runs for 134 miles (216 km) through eastern Pennsylvania. The route runs from an interchange between Pennsylvania Route 611, PA 611 and Cheltenham Avenue on the border of Philadelphia ...

from the southeast, and meet with

Pennsylvania Route 145 Pennsylvania Route 145 (PA 145) is a long north–south state highway in the Lehigh Valley area of eastern Pennsylvania. It connects PA 309 in Lanark, Lehigh County, north to PA 248 in Lehigh Gap, Northampton County. PA 145 is the main nor ...

in Lanark at a major interchange, all heading northwest over the mountain. This is the southern and eastern end of the I-78/PA 309 concurrency.

References

Unincorporated communities in Lehigh County, Pennsylvania Unincorporated communities in Pennsylvania {{LehighCountyPA-geo-stub