New Hope has roughly 9,114 households, sitting inside a wider service area of 291,693 households and 151,285 owner-occupied houses. Median household income here runs about $73,698, noticeably under the $112,220 median across that broader area. That income gap tends to track with what we see on the hardware side: more owners here are keeping an original spring system or opener running longer rather than replacing it on a fixed schedule, which isn't unreasonable - a working door doesn't need replacing just because it's old - but it does mean more wear accumulates on parts that were never designed to last sixty years.
The climate doesn't help. This is a cold-climate zone with severe winter conditions, and a door built around 1969 has been through roughly five decades of freeze-thaw cycles on its springs, hinges, and weatherseal. Steel fatigues differently in repeated cold snaps than it does in a milder climate, and on older doors that haven't had hardware replaced, that fatigue tends to show up as a spring that finally lets go on a January morning rather than a slow decline you'd notice coming.