Costley Mill Park Beach
Swimming hole in Conyers, Georgia · Lake
Costley Mill Park Beach in Conyers, Georgia is a Rockdale County lifeguarded millpond swim beach with timed summer blocks and a capacity cap — about $4 for ages 4–59. Swim only when lifeguards are on duty; it is a developed park beach, not a remote hole.
Typical season: Memorial Day through Labor Day, typically Friday–Sunday noon–6 p
About Costley Mill Park Beach
**Costley Mill Park Beach** in Conyers is a **Rockdale County** lifeguarded swim beach on a millpond. ticketed, capacity-limited, and open **Memorial Day, Labor Day** only when guards are on duty. Typical admission is about **$4 for ages 4, 59** (3 & under and 60+ often free). This is a developed Atlanta-metro park beach, not a wild swimming hole. Glass, food, and pets are banned on the sand. Confirm daily beach status before you drive. capacity caps and weather closures are real.
Key facts
Structured details for trip planning — verify access and fees with the land manager before you visit.
- Address
- 2455 Costley Mill Road, Conyers, GA 30013
- Water type
- Lake
- Water body
- Costley Mill millpond
- Fee
- Paid beach — about $4 ages 4–59; 3 & under and 60+ free (confirm Rockdale County schedule)
- Nearest town
- Conyers
- State
- Georgia
- Coordinates
- 33.70730, -83.93020
- Best season
- Memorial Day through Labor Day, typically Friday–Sunday noon–6 p.m. when lifeguards staff the beach.
- Access difficulty
- Easy developed park access at 2455 Costley Mill Road, Conyers.
- Parking
- Roadside / pull-off
- Restrooms
- Yes
- Lifeguard
- Present (seasonal — confirm on arrival)
- Dogs allowed
- Yes
- Camping
- None — day-use park.
- Activities
- Swimming (lifeguarded hours only), picnicking, short trails
- Facilities
- Restrooms, pavilions, playground, trails, welcome center. Beach rules ban glass, food, and pets on the sand.
- Listing last updated
- September 30, 2026
The experience
- Best time to visitMemorial Day through Labor Day, typically Friday, Sunday noon, 6 p.m. when lifeguards staff the beach.
- AccessEasy developed park access at 2455 Costley Mill Road, Conyers.
- FacilitiesRestrooms, pavilions, playground, trails, welcome center. Beach rules ban glass, food, and pets on the sand.
- Camping nearbyNone. day-use park.
Highlights & features
- Rockdale County swim beach
- Lifeguarded summer hours
- Atlanta day trip
- Rockdale County lifeguarded millpond beach
- Timed summer swim blocks with capacity caps
- About $4 ages 4–59 (confirm county schedule)
How to get there
2455 Costley Mill Road, Conyers, GA 30013.
1. From Atlanta, take I-20 east toward Conyers and follow local routes to Costley Mill Road.
2. Park in park lots; do not invent roadside overflow.
3. Pay beach admission when the swim is staffed; keep the rest of the park for trails/pavilions if the beach is at capacity.
4. Swim only during posted lifeguard blocks. Check costleymillpark.com / Rockdale County notices the morning of your visit.
Plan your visit
Expect Friday, Sunday noon, 6 p.m. style blocks in season (confirm annually). Bring cash/card for admission, towels, and shade for the picnic side of the park. Pair with Conyers errands. this is a family park stop, not a wilderness outing.
Access & fees
Swim only when lifeguards are present. Dogs banned on the beach. No climbing on rocks per park rules. Day-use park. no camping.
Frequently asked questions
Can you swim at Costley Mill anytime?
No. Swimming is only Memorial Day–Labor Day when lifeguards staff the beach, usually in timed afternoon blocks.
How much is Costley Mill beach admission?
About $4 for ages 4–59; ages 3 and under and 60+ are typically free. Confirm the current Rockdale County schedule.
Are dogs allowed on Costley Mill Beach?
No on the beach. Leashed dogs may be allowed elsewhere in the park.
Is Costley Mill a natural swimming hole?
It is a developed county park beach on a millpond — not a remote creek or waterfall hole.
Can you swim at Costley Mill anytime the park is open?
No. Swimming is only allowed Memorial Day–Labor Day when lifeguards are on duty, usually in timed blocks with a capacity cap.
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