Post Island is a roughly 40-house private community wedged between Houghs Neck and Adams Shore, set apart by the surrounding salt marsh. Real-estate records describe its beach as owned by a neighborhood association, so despite appearing on some public open-space inventories, it functions as private waterfront rather than a beach the public can walk onto.
What to expect
Hours
Not applicable, private beach association property
Season
Effectively private; not open to the general public
Dogs
Not applicable, no public access
Getting in
Parking
Paid lot
Costn/a
None public
Details unconfirmed
None public
Costn/aSpaces0
Residents-only community; no public parking identified.
Tides & weather
Tide and sun: NOAA astronomy · forecast: NWS, up to 7 days
Common questions
Is Post Island Beach in Quincy open today?
open to the public; water quality here is not monitored by MA DPH (updated 2026-09-13). MA DPH is the authority. Check the status the morning you go.
Can the public visit Post Island Beach?
No, this stretch of shoreline belongs to a private neighborhood beach association serving the small Post Island community, not the city at large.
Is there parking at Post Island Beach, and what does it cost?
Paid lot (n/a). None public
Can you swim at Post Island Beach?
No. Post Island Beach's own access rules say swimming is not permitted here.
Are dogs allowed at Post Island Beach?
Not applicable, no public access