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Historical Markers in Acton
Lowell and Cambridge are both the county seat for Middlesex County
Acton is in Middlesex County
ADJACENT TO MIDDLESEX COUNTY Hillsborough County, New Hampshire (96) ►
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| On Carlisle Road 0.6 miles north of Main Street (Massachusetts Route 27), on the left when traveling east. |
| On Alcott Street 0.2 miles south of Concord Road. |
| On High Street (Massachusetts Route 27) close to Main Street (Local Route .01), on the right. |
Nov. 11, 2026