Quick Answer: Buy a trampoline if upfront cost, footprint, and near-zero annual upkeep matter most — a budget model runs $300-650 with no ongoing chemical or electricity cost. Buy a pool — above-ground for a comparable $700-$1,350 budget, or inground starting around $35,000 — if swimming itself is the point, not just backyard play. On safety, the honest picture is two different risks, not one “safer” answer: trampolines send far more people to the ER each year (~100,000, CPSC), but pools are responsible for far more child deaths (drowning is the CDC’s leading cause of death for kids ages 1-4), so which one worries you more depends on whether you weigh frequency or severity.
Both sit at the top of the “big backyard purchase” list, but a trampoline and a pool solve different problems and carry genuinely different tradeoffs — not just a bigger or smaller version of the same risk. Here’s how they actually compare on cost, upkeep, and the safety data most comparison blogs oversimplify in one direction or the other.
At a glance
| Trampoline | Pool | |
|---|---|---|
| Typical price | $300 (12ft budget) to $2,500+ (premium/in-ground) | $700-1,350 (above-ground) to $35,000-120,000+ (inground) |
| Annual upkeep cost | ~$0, plus occasional spring/pad/net/mat swaps | $500-1,500 (above-ground) to $1,000-6,000 (inground) |
| Setup time | Hours to a day (DIY) | A weekend (above-ground, DIY) to weeks (inground, contractor) |
| Est. annual U.S. injuries | ~100,000 ER visits/year, all ages (CPSC) | ~5,900 nonfatal ED-treated drowning injuries/year, under 15 (CPSC) |
| Est. annual U.S. child deaths | Rare; not separately tracked by CPSC as a leading fatality category | ~376/year under 15, ~80% under age 5 (CPSC, 2021-2023 avg) |
| Usable season | 3 seasons in most U.S. climates (year-round if covered/enclosed) | 4-5 months without heating |
| Insurance treatment | "Attractive nuisance" — rider or exclusion common | "Attractive nuisance" — usually raises premiums more |
By the numbers
- The Consumer Product Safety Commission attributes roughly 100,000 trampoline-related ER visits a year in the U.S. — a figure that covers all ages and injury types, and is almost entirely nonfatal, per our trampoline safety guide.
- CPSC’s own 2021-2023 data counts an average of 376 children under 15 fatally drowning in pool- or spa-related incidents each year, with nearly 80% of victims under age 5 and over 70% of those drownings happening in a residential setting — a much smaller incident count than the trampoline ER figure, but a fatality rather than an injury statistic, which is a different kind of risk, not a smaller version of the same one.
- The 2024 Adult Compendium of Physical Activities lists recreational trampoline jumping at 3.5 METs versus 6.0 METs for general leisurely swimming — casual swimming burns more calories per minute than casual bouncing, the reverse of a claim (“trampolines burn more calories than swimming”) that shows up uncited on several trampoline-vs-pool comparison sites.
- An inground pool averages $35,000-$66,000 to install with a typical range of $44,500-$87,500, per 2026 cost data from Forbes Home, Angi, and NerdWallet — before $1,000-$6,000 a year in ongoing chemicals, electricity, water, and seasonal opening/closing.
Trampoline: the lower-cost, lower-upkeep pick
Zupapa 15ft Round Trampoline with Safety Enclosure
- 425 lb per-jumper weight rating and a no-gap enclosure net.
- 10-year frame warranty, no chemicals, electricity, or plumbing required after setup.
- Not recommended for children under 6 per AAP/AAOS guidance — see our trampoline safety guide before buying.
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A trampoline wins on both ends of the cost equation: the lowest realistic entry price and the lowest ongoing spend, since there’s no water, no chemicals, and no electricity bill once it’s assembled. The real limiting factor isn’t cost — it’s the AAP’s recommended age-6 floor for full-size models, which rules it out as the only backyard feature if a toddler is in the house. For the complete lineup by size and budget, see our best trampoline guide.
Pool: the swimming pick, above-ground or inground
Intex Ultra XTR Frame Above Ground Pool, 16ft Round
- Includes a sand filter pump; galvanized steel frame with a 2-year warranty on liner, frame, and pump.
- Installs in a weekend without a contractor — the realistic budget alternative to a $35,000+ inground build.
- Still needs $500-1,500 a year in chemicals, electricity and water (HomeGuide 2026 data) — a recurring cost a trampoline doesn't carry.
If swimming itself — not just backyard play — is the point, no trampoline substitutes for it. An above-ground pool like the Intex Ultra XTR is the fair cost comparison against a trampoline; a contractor-built inground pool is a different purchase entirely, closer in scale to a home addition than a backyard toy. Either way, pool ownership carries the higher fatality risk per incident and the higher ongoing cost — the tradeoff a family is actually making isn’t “safer vs. riskier,” it’s frequent-and-usually-minor versus rare-and-more-severe.
Which one should you actually buy?
- Budget and low upkeep matter most: a trampoline — lowest entry price, near-zero annual cost, and no seasonal open/close routine.
- Swimming is the actual goal, budget is tight: an above-ground pool — the realistic cost-comparable alternative to a trampoline, not an inground build.
- Swimming is the goal and budget allows it: an inground pool, understanding it’s a $35,000+ contractor project with real annual upkeep, not a weekend purchase.
- A toddler is in the household: neither is automatically appropriate — full-size trampolines carry an AAP age-6 floor, and pools require constant supervision regardless of age given the drowning data above; see our trampoline insurance guide for how insurers treat both as an “attractive nuisance.”
- Weighing the safety data specifically: decide which risk profile worries you more — a trampoline injures more often but rarely fatally, a pool injures less often but with a much higher chance the outcome is fatal for a young child.
Whichever you choose, call your homeowners insurer before it’s in the yard — both categories are commonly underwritten as an “attractive nuisance,” and an undisclosed pool or trampoline can jeopardize a claim later. Comparing against other backyard structures instead? Our trampoline vs. swing set comparison and trampoline vs. bounce house comparison cover the other two items on the same shortlist.