- COORDINATES: 39.9631644, -75.2497659 (approximate coordinates where original is believed to have been)
- COUNTY: Delaware
- DISTANCE TO NEXT: West Chester - 20 (This is an unusually long distance for this well developed area of PA. There were probably other markers between Millbourne and West Chester - Newtown Square for one.)
- EXPLANATION OF NAME: Named For Millbourne Mills Built In 1757 (Original marker said "Named From")
- FOUNDED: Says "Incorporated" 1909, rather than a "Founded" date. Original said 1907, with which town folk disagreed thus the different date on this replica.
- MANUFACTURER: Undetermined. Perhaps made locally.
- STATUS: This is a replica marker, as the fate of the original is unknown.

November 2021 photo by Ben Kranefeld

November 2021 photo by Ben Kranefeld
PA Route 3 (Market Street near Park Ave.)