---
title: "Kirkland Diapers — $36K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/baby-products/kirkland-diapers"
last_updated: "2026-08-09T20:01:12.313Z"
locale: en
meta:
description: "Niche score 34/100 · $36K/yr market · 70K searches/yr · $39.00 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 34/100 · $36K/yr market · 70K searches/yr · $39.00 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Kirkland Diapers — $36K/yr Amazon US Niche (2026) - Flapen"
---
# **kirkland diapers**
**Skip it**
A deep review moat (41,894 avg reviews) — this niche doesn't clear our bar today.
Market size 9Growth 21Conversion 16Competition 22Returns 89Price range 95Avg price 95Brand share 16Review moat 4Quality gap 38
**Avg price**
**Incredible****$39.00**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$27.63–$62.54**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Great****1.3%**
return rate — above 5% kills the launch gate
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****74%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-7.4%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****1.3%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Bad****93%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****$36K**
$36K/yr · 70K searches
**Review moat**
**Bad****41,894**
avg incumbent reviews — the moat a new listing must climb
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, kirkland diapers is a $36K/yr Amazon United States market (70K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Jul–Aug. Verdict: Skip it — 34/100.
Data updated Jul 12, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **kirkland diapers market data**
- **Units sold / yr**
- **750–1K**
- avg 0–100/product
- **Revenue / yr**
- **$29K–$39K**
- units × avg price
- **Conversion rate**
- **1.3%**
- **Avg BSR**
- **#88**
- **Page quality**
- **0%**
- **Prime**
- **85%**
- **Sponsored**
- **62%**
- **Out of stock**
- **7.0%**
- **Avg brand age**
- **59 months**
- **Avg seller age**
- **141 days**
## **Competition & brand share**
The top 5 products capture 74% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**6 **—flat
**Sellers**
**54**
**Top-5 brand share**
**93%**
Top 20: 100%
**Top-5 click share**
**74%**
Top 20: 100%
**Open market**
**0%**
- HAO33% - The Honest Company20% - KIRKLAND18% - Pampers12% - HUGGIES11% - Mama Bear7%
## **Demand & seasonality**
Weekly Amazon search volume, last 101 weeks — -7.4% search growth over the last 90 days.
4K3KPrime Day '25Spike '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Jul, Aug · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/us/baby-products/kirkland-diapers/trend)
## **Top kirkland diapers search terms**
- **kirkland diapers**53K/yr-7.6%0.1% conv. - **kirkland diapers size 3**7K/yr-5.7%1.4% conv. - **costco diapers**3K/yr-4.6%0.1% conv. - **kirkland baby diapers**2K/yr-17.0%0.0% conv. - **kirkland signature diapers**2K/yr-3.3%0.0% conv. - **kirkland diaper**1K/yr-7.7%0.0% conv. - **kirkland size 3 diapers**1K/yr+1.3%3.0% conv. [**All search terms **](https://flapen.com/research/us/baby-products/kirkland-diapers/search-terms)
## **Top kirkland diapers products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$4K20%$7K30%$11K40%$14K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Kirkland Signature Diapers Size 3 (16 lbs - 28 lbs) 198 Count W/ Exclusive Health and Outdoors Wipes**HAO**$62.54**4.6★244 rev](https://www.amazon.com/dp/B08FPJHGR9) [2**Kirkland Signature Supreme Diapers Size 3 Total Counts 210**KIRKLAND**$59.87**4.7★6 rev](https://www.amazon.com/dp/B0089Y1EBI) [3**The Honest Company Comfort Dry Disposable Daytime Diapers for Sensitive Skin Hypoallergenic All the Alpacas + Turtle Time Club Box Size 1 (8-14 lbs) 78 Count**The Honest Company**$27.87**4.2★2,613 rev](https://www.amazon.com/dp/B0CKV2ZL1Y) [4**Pampers Diapers - Baby Dry - Size 3 104 Count Absorbent Disposable Infant Diaper (Packaging May Vary)**Pampers**$28.61**4.7★97,820 rev](https://www.amazon.com/dp/B00FMWX5GW) [5**Huggies Size 3 Diapers Little Movers Baby Diapers Size 3 (16-28 lbs) 168 Count (6 Packs of 28) Packaging May Vary**HUGGIES**$50.62**4.8★46,925 rev](https://www.amazon.com/dp/B0DKYP6V7Y)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Huggies Size 3 Diapers Little Movers Baby Diapers Size 3 (16-28 lbs) 168 Count (6 Packs of 28) Packaging May Vary**HUGGIES**$50.62**46,925 rev1y ago](https://www.amazon.com/dp/B0DKYP6V7Y) [**Huggies Size Newborn Diapers Little Snugglers Baby Diapers Size Newborn (up to 10 lbs) 144 Count Packaging May Vary**HUGGIES**$42.41**87,869 rev2y ago](https://www.amazon.com/dp/B0CM4H9CSB) [**The Honest Company Comfort Dry Disposable Daytime Diapers for Sensitive Skin Hypoallergenic All the Alpacas + Turtle Time Club Box Size 1 (8-14 lbs) 78 Count**The Honest Company**$27.87**2,613 rev2y ago](https://www.amazon.com/dp/B0CKV2ZL1Y) [**The Honest Company Comfort Dry Disposable Daytime Diapers for Sensitive Skin Hypoallergenic Above It All + All the Alpacas Club Box Size Newborn 72 Count**The Honest Company**$27.63**2,613 rev2y ago](https://www.amazon.com/dp/B0CKV2VGX1) [**The Honest Company Comfort Dry Disposable Daytime Diapers for Sensitive Skin Hypoallergenic All the Alpacas + Turtle Time Super Club Box Size 1 (814 lbs) 136 Count**The Honest Company**$46.70**1,762 rev2y ago](https://www.amazon.com/dp/B0CKV234ZW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**The Honest Company Comfort Dry Disposable Daytime Diapers for Sensitive Skin Hypoallergenic All the Alpacas + Turtle Time Super Club Box Size 1 (814 lbs) 136 Count**The Honest Company**$46.70**4.0★**▲ 315%**](https://www.amazon.com/dp/B0CKV234ZW) [**Amazon Brand - Mama Bear Gentle Touch Baby Diapers Formulated without Fragrance Size 4 148 Count (4 packs of 37) with Skin Protection and Leak Protection**Mama Bear**$31.22**4.2★**▲ 230%**](https://www.amazon.com/dp/B07SV3XWZ7) [**Huggies Size 5 Diapers Little Movers Baby Diapers Size 5 (27+ lbs) 104 Count Packaging May Vary**HUGGIES**$40.51**4.8★**▲ 105%**](https://www.amazon.com/dp/B07W1J2FLC) [**The Honest Company Comfort Dry Disposable Daytime Diapers for Sensitive Skin Hypoallergenic Above It All + All the Alpacas Club Box Size Newborn 72 Count**The Honest Company**$27.63**4.2★**▲ 104%**](https://www.amazon.com/dp/B0CKV2VGX1) [**Kirkland Signature Supreme Diapers Size 3 Total Counts 210**KIRKLAND**$59.87**4.7★**▲ 66%**](https://www.amazon.com/dp/B0089Y1EBI)
**~~View all trending →~~**
## **What buyers say about kirkland diapers**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**11%
*“Fits well”*
**Leak-Proof**10%
*“some leaks not as much”*
**Value For Money**8%
*“Great value for money”*
**Soft Feel**8%
*“its so soft on the skin”*
**Absorbency**7%
*“very absorbent”*
**Quality-Overall**7%
*“I like the quality”*
**Allergies**4%
*“dont cause any irritation”*
**Comfort-Overall**4%
*“These are comfortable”*
**Moist/Dry**3%
*“Diapers keep baby dry enough”*
**Design-Overall**3%
*“Design is cute”*
### **What buyers complain about **
**Leak-Proof**21%
*“Leaks”*
**Quality-Overall**11%
*“they are extremely low quality”*
**Size-Overall**9%
*“Too big”*
**Allergies**7%
*“irritation after using these diapers”*
**Value For Money**4%
*“Waste of money”*
**Absorbency**4%
*“Terrible absorbency”*
**Smell**4%
*“it had a very strong chemical smell”*
**Thickness**3%
*“thin”*
**Hard Feel**3%
*“These diapers arent very soft”*
**Moist/Dry**2%
*“These diapers do not hold wetness”*
### **Top return reasons **
**Size-Overall**75%
**Age Suitability**8%
**Leak-Proof**5%
**Advertised Vs Actual Product**2%
**Value For Money**2%
**Absorbency**2%
**Quality-Overall**1%
**Functionality-Overall**1%
**Smell**1%
**Thin**1%
## **Common questions**
- **Is kirkland diapers profitable to sell on Amazon United States?**
- The niche generates $36K/yr across 13 tracked products. 90-day search growth is -7.4%. Flapen's verdict: Skip it (34/100).
- **How competitive is the kirkland diapers niche?**
- 6 brands and 54 sellers compete. The top 5 products take 74% of clicks and top 5 brands hold 93% of demand.
- **What do buyers complain about in kirkland diapers?**
- Top complaints mined from reviews: Leak-Proof, Quality-Overall, Size-Overall. The return rate is 1.3%.
- **When does demand for kirkland diapers peak?**
- Demand peaks in Jul–Aug; the busiest month runs 1.9× the quietest.
- **What does it cost to enter the kirkland diapers niche?**
- Listings span $27.63–$62.54; the average listing price is $39.00 (sweet spot $15–$100). The average incumbent carries 41,894 reviews — the moat a new listing must climb.
## **Related niches in Baby Products**
- 65 [**baby car seat fan**](https://flapen.com/research/us/baby-products/baby-car-seat-fan)$31K/yr+151.9%**Worth a look**- 65 [**tummy time toys**](https://flapen.com/research/us/baby-products/tummy-time-toys)$11.8M/yr-9.5%**Worth a look**- 65 [**sunscreen brush**](https://flapen.com/research/us/baby-products/sunscreen-brush)$615K/yr+314.7%**Worth a look**- 65 [**toddler step stool**](https://flapen.com/research/us/baby-products/toddler-step-stool)$4.1M/yr-7.9%**Worth a look**- 65 [**training diapers 2t-3t**](https://flapen.com/research/us/baby-products/training-diapers-2t-3t)$6.1M/yr+8.7%**Launch it**- 65 [**water baby carrier**](https://flapen.com/research/us/baby-products/water-baby-carrier)$431K/yr+176.5%**Worth a look**[**All Baby Products niches **](https://flapen.com/research/us/baby-products)