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Historical Markers in Irwin, Pennsylvania
Greensburg is the county seat for Westmoreland County
Irwin is in Westmoreland County
Westmoreland County (172) ►ADJACENT TO WESTMORELAND COUNTY Allegheny County (679) ► Armstrong County (23) ► Cambria County (98) ► Fayette County (289) ► Indiana County (36) ► Somerset County (158) ► Washington County (377) ►
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| On Clay Pike at Robbins Station Road on Clay Pike. |
| On Reservoir Road, 0.8 miles west of Clay Pike, on the left when traveling south. |
| On Pennsylvania Avenue, 0.2 miles west of Rocky Road, on the right when traveling east. |
| On Main Street at Pennsylvania Avenue (Old Route 30), on the right when traveling south on Main Street. |
| Near Pennsylvania Avenue (Old Route 30) at Main Street. |
May. 19, 2024