Laundromats in Williamstown, NJ
2 laundromats in and around Williamstown, New Jersey — check the last-wash time before you set out — most attended stores stop new loads 60–90 minutes before closing, and card-only stores keep no change machine on site.
Monroe Speed Wash Open 24 hoursLarge machines
128 Poplar St, Williamstown, NJ 08094
🕒 Open 24 hours
Tip: weekday mornings are the quiet hours — evenings and Sunday afternoons are when every machine is taken. If you have a comforter or sleeping bag, look for a store with 40–80 lb front loaders; a home-size washer will not clean it.