Pea Gravel vs River Rock: 2026 Comparison
Side by side on size, drainage, compaction, look, and cost. No fluff, just the numbers and the trade-offs.
Quick take
Pea Gravel is a decorative material in the 1/4 – 3/8″ range, most often spec’d for patio gravel. River Rock sits in the same category but runs 1 – 3″, and it shows up more on decorative gravel work.
How the two differ in practice
Size is the first split: 1/4 – 3/8″ for Pea Gravel versus 1 – 3″ for River Rock. On compaction, expect stays loose, rolls underfoot from Pea Gravel, while River Rock delivers stays loose. Density is 2800 lb/yd³ next to 2700 lb/yd³, which moves the cost-per-ton math by a small margin. Delivered cost is $45-$95/ton for Pea Gravel and $70-$180/ton for River Rock.
When Pea Gravel is the right call
Pick Pea Gravel when the job is patio gravel and walkway gravel. The smooth, rounded, tan / mixed grade and the way it stays loose, rolls underfoot make it a fit for that application. On a full-truck order the per-ton cost falls roughly 15 to 20 percent under partial-load pricing, which is the cleanest way to land in the $45-$95/ton band.
When River Rock is the better fit
Switch to River Rock if the project leans toward decorative gravel and drainage gravel. The rounded mixed natural grade matches that job better. Plan for $70-$180/ton delivered, same full-load break point as Pea Gravel.
Side by side comparison
| Attribute | Pea Gravel | River Rock |
|---|---|---|
| Category | Decorative | Decorative |
| Particle size | 1/4 - 3/8" | 1 - 3" |
| Color & look | Smooth, rounded, tan / mixed | Rounded mixed natural |
| Density | 2800 lb/yd³ | 2700 lb/yd³ |
| Sold by | Ton | Ton |
| Price range | $45-$95/ton | $70-$180/ton |
| Drainage | Very fast | Very fast |
| Compaction | Stays loose, rolls underfoot | Stays loose |
| Maintenance | Re-dress yearly | Re-dress every 2-3 years |
| Best for | patio gravel, walkway gravel, and pool deck gravel | decorative gravel, drainage gravel, and pool deck gravel |
Verdict
If your project is patio gravel, go with Pea Gravel. If it leans toward decorative gravel, River Rock is the cleaner pick. Cost-wise the gap is small, so the deciding factor is the surface and traffic, not the price.
Bottom line: Project-dependent
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Is Pea Gravel or River Rock cheaper?
Per-ton pricing is usually within $10. The main cost driver is freight from the nearest quarry, not the material itself.
Which one drains better?
Larger, more angular stones drain faster. Compare the two products' size grades to pick by drainage need.
Can I mix Pea Gravel and River Rock?
Yes - many installers use the coarser grade as base and the finer as a top dressing. Layer base first, then top.
How long does each last?
Both materials last 10+ years with periodic top-up. UV breaks down nothing because they're rock.
Which has more aesthetic appeal?
Subjective. Pull a sample from your supplier before ordering 10 tons.
Are both available delivered?
Yes - both ship via tandem dump truck (4-25 tons) or bag drop (1-3 tons). Same lead times in most metros.