Grassy Key RV Park & Resort

Private park in Marathon, FL

Grassy Key RV Park & Resort has full hookups and allows up to 2 pets. RV sites cost $105–$285 a night. Monthly stays from $2,140.

Nightly: $105–$285 a night
Monthly: Yes: $2,140–$5,940 a month
Longest rig: Not checked yet
Pets: Allowed, max 2

Ready to book?

Check dates and the current rate for your rig on the park's booking page.

Park website

Stays and rates

Nightly rate: $105–$285 a night
Weekly rate: From $680
Monthly stays: Yes: $2,140–$5,940 a month
Electric on monthly stays: Metered
Minimum stay: Not checked yet
Maximum stay: Not stated by the park
Season: Open all year

Rates as published by the park, checked Oct 31, 2026. Park rate sheet 2026-27 (updated 4/1/26): summer Apr 15-Dec 14 daily $105-$205, weekly $680-$1,360, monthly $2,140-$4,275; winter Dec 15-Apr 14 daily $170-$285, weekly $1,120-$1,885, monthly $3,520-$5,940; 4 people, 1 RV, 1 vehicle; plus 12.5% site tax Confirm the current rate with the park.

Pets

Pets: Allowed, max 2
Breed restrictions: Not stated by the park
Pet fee: Not checked yet
Dog area: Yes

On site

Tent sites: Not checked yet
Cabins: Not checked yet
Wi-Fi: Yes
Laundry: Yes

In short

Gulfside RV resort at MM 58.7 on Grassy Key near Marathon with full-hookup waterfront, premium and standard sites (30/50 amp, cable), boat dockage and a pool, open all year. It publishes daily, weekly, monthly and multi-month rates by season and allows two pets per site.