Flag and seal of Lehigh County, Pennsylvania
| Use | County of Lehigh |
|---|---|
| Adopted | December 28, 1944 |
| Design | County seal on a blue field |
| Seal of Lehigh County | |
|---|---|
| Adopted | December 28, 1944 |
| Crest | Flag of the United States and the Flag of Pennsylvania crossed |
| Torse | A heart with outline of Lehigh County surmounted by an oil lamp |
| Shield | Old Lehigh County Courthouse surmounted on a golden cross, a Bison, and the Liberty Bell |
| Supporters | Farms and factories |
The flag of Lehigh County in Pennsylvania features the county's seal atop a blue field.
The county seal of features the Old Lehigh County Courthouse surmounted on a golden cross, representing Lehigh County's first Christian settlers. On the cross's right is a bison, representing the Trexler Nature Preserve, where the animals graze. On the cross's left is the Liberty Bell, which was hidden in Allentown, the county seat of Lehigh County, for nine months in 1777 following the fall of Philadelphia during the Revolutionary War.
Supporting the seal, to the right, are factories, and, to the left, are farms; both represent historical economic foundations of Lehigh County. Above the seal is the flag of the United States and the flag of Pennsylvania crossed and surmounted by the red heart of Allentown, which includes an outline of Lehigh County surmounted by an oil lamp, an Allentown symbol.