---
title: "20 Oz Styrofoam Cups — $320K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/20-oz-styrofoam-cups"
last_updated: "2026-08-09T12:02:26.550Z"
locale: en
meta:
description: "Niche score 58/100 · $320K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 58/100 · $320K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "20 Oz Styrofoam Cups — $320K/yr Amazon US Niche (2026) - Flapen"
---
# **20 oz styrofoam cups**
**Worth a look**
Shows low returns (0.5%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 52Growth 37Conversion 88Competition 38Returns 98Price range 92Avg price 95Brand share 22Review moat 74Quality gap 52
**Returns**
**Incredible****0.5%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$32.17**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$12.97–$66.26**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****10.3%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****530.89**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Good****$320K**
$320K/yr · 96K searches
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****62%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Okay****+9.3%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****91%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, 20 oz styrofoam cups is a $320K/yr Amazon United States market (96K searches/yr). The top 5 brands hold 91% of demand. Verdict: Worth a look — 58/100.
Data updated Jul 13, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **20 oz styrofoam cups market data**
- **Units sold / yr**
- **10K–13K**
- avg 500–750/product
- **Revenue / yr**
- **$322K–$402K**
- units × avg price
- **Conversion rate**
- **10.3%**
- **Avg BSR**
- **#1,166**
- **Page quality**
- **0%**
- **Prime**
- **72%**
- **Sponsored**
- **67%**
- **Out of stock**
- **3.2%**
- **Avg brand age**
- **55 months**
- **Avg seller age**
- **164 days**
## **Competition & brand share**
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **▲rising
**Sellers**
**124**
**Top-5 brand share**
**91%**
Top 20: 100%
**Top-5 click share**
**62%**
Top 20: 100%
**Open market**
**7%**
- Mr Miracle31% - DART23% - Shop Square16% - Concession Essentials14% - Wincup7% - Genuine Joe2% - Open — no brand owns it (5 brands, 7%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +9.3% search growth over the last 90 days.
2K2KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/health-household/20-oz-styrofoam-cups/trend)
## **Top 20 oz styrofoam cups search terms**
- **20 oz styrofoam cups**23K/yr+10.3%12.7% conv. - **styrofoam cups 20 oz**16K/yr+16.1%9.8% conv. - **20oz styrofoam cups**9K/yr+24.1%10.7% conv. - **large styrofoam cups**10K/yr+0.7%4.0% conv. - **foam cups 20 oz**9K/yr+14.1%8.9% conv. - **20 oz foam cups**8K/yr+2.5%10.6% conv. - **20oz foam cups**5K/yr+12.9%7.6% conv. - **20 oz styrofoam cups with lids**4K/yr+27.3%7.8% conv. - **20 ounce styrofoam cups**4K/yr-5.0%13.7% conv. - **lean cup**5K/yr-0.5%0.1% conv. [**All search terms **](https://flapen.com/research/us/health-household/20-oz-styrofoam-cups/search-terms)
## **Top 20 oz styrofoam cups 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%5%$16K10%$32K15%$48K20%$64K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**DART 20J16 3.7 Top and 2.4 Bottom Diameter 6.1 Height 20 Oz Big Drink Foam Cup (Case of 500) White**DART**$48.26**4.7★4,813 rev](https://www.amazon.com/dp/B004NG8AAY) [2**Concession Essentials 20 oz Foam Cups 100 Count Pack Insulated Disposable Cups for Hot & Cold Beverages Durable Lightweight Perfect for Coffee Soda & Events**Concession Essentials**$28.68**4.4★772 rev](https://www.amazon.com/dp/B0GQD8M8X5) [3**20 OZ Foam Cups With Lids for Hot & Cold Drinks USA-Made 25-Pack. Ideal Styrofoam Coffee Cups Insulating To-Go Cups for Soda Tea Juice - Sturdy Disposable & comparable to Industry standard 20J20**Mr Miracle**$19.83**4.5★798 rev](https://www.amazon.com/dp/B0CXWFVP89) [4**Shop Square 20 Oz Disposable Foam Cups (50 Pack) White Foam Insulates Hot & Cold Beverages Made in the USA To-Go Cups - for Coffee Tea Hot Cocoa Soup Broth Smoothie Soda Juice**Shop Square**$25.54**4.6★505 rev](https://www.amazon.com/dp/B099P18SBH) [5**Mr Miracle 20 oz Styrofoam Cups Disposable Foam Cups (25 Pack) Insulated White Styrofoam Coffee Cups for Hot & Cold Drinks Comparable to Industry 20J16 Standard Foam Cups Made in USA**Mr Miracle**$17.00**4.6★68 rev](https://www.amazon.com/dp/B0GD31464T)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Concession Essentials 20 oz Foam Cups 100 Count Pack Insulated Disposable Cups for Hot & Cold Beverages Durable Lightweight Perfect for Coffee Soda & Events**Concession Essentials**$28.68**772 rev4mo ago](https://www.amazon.com/dp/B0GQD8M8X5) [**Mr Miracle 20 oz Styrofoam Cups Disposable Foam Cups (25 Pack) Insulated White Styrofoam Coffee Cups for Hot & Cold Drinks Comparable to Industry 20J16 Standard Foam Cups Made in USA**Mr Miracle**$17.00**68 rev6mo ago](https://www.amazon.com/dp/B0GD31464T) [**Mr Miracle 20 oz Styrofoam Cups Disposable Foam Cups (50 Pack) Insulated White Styrofoam Coffee Cups for Hot & Cold Drinks Comparable to Industry 20J16 Standard Foam Cups Made in USA**Mr Miracle**$26.00**68 rev6mo ago](https://www.amazon.com/dp/B0GD2VRBFS) [**Kleen 20 oz 20J16 Insulated Coffee & Beverages White Foam Cups (500 Cups)**Kleen**$57.00**15 rev7mo ago](https://www.amazon.com/dp/B0F8CY2D4L) [**Acellegic 72 Pack 20 oz Disposable Foam Cups Bulk White Foam Insulated Coffee Drink Cups for Hot and Cold Soda Tea Beverage Party Supplies**Acellegic**$20.19**3 rev7mo ago](https://www.amazon.com/dp/B0G2RVRHL7)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Wincup Styrofoam Cup 16 Oz Bagged 20 Count**R3**$12.97**3.5★**▲ 258%**](https://www.amazon.com/dp/B008RF5OAG) [**Concession Essentials 20 oz Foam Cups 100 Count Pack Insulated Disposable Cups for Hot & Cold Beverages Durable Lightweight Perfect for Coffee Soda & Events**Concession Essentials**$28.68**4.4★**▲ 257%**](https://www.amazon.com/dp/B0GQD8M8X5) [**Mr Miracle 20 oz Styrofoam Cups Disposable Foam Cups (50 Pack) Insulated White Styrofoam Coffee Cups for Hot & Cold Drinks Comparable to Industry 20J16 Standard Foam Cups Made in USA**Mr Miracle**$26.00**4.6★**▲ 188%**](https://www.amazon.com/dp/B0GD2VRBFS) [**Mr Miracle 20 oz Styrofoam Cups Disposable Foam Cups (25 Pack) Insulated White Styrofoam Coffee Cups for Hot & Cold Drinks Comparable to Industry 20J16 Standard Foam Cups Made in USA**Mr Miracle**$17.00**4.6★**▲ 164%**](https://www.amazon.com/dp/B0GD31464T) [**PDTXCLS WinCup Drinking Cup 20 oz. White Styrofoam Disposable 20C18 - CASE of 500**Wincup**$56.92**4.6★**▲ 126%**](https://www.amazon.com/dp/B07XF22KXM)
**~~View all trending →~~**
## **What buyers say about 20 oz styrofoam cups**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**20%
*“Great size”*
**Quality-Overall**13%
*“Great quality”*
**Leak-Proof**13%
*“Did not leak”*
**Value For Money**9%
*“Good value”*
**Advertised Vs Actual Product**6%
*“Exactly as advertised”*
**Strength**6%
*“Super sturdy”*
**Temperature Retention**4%
*“Great insulation”*
**Durability**4%
*“Durable”*
**Thickness**3%
*“They are nice and thick, and the lids fit securely”*
**Material Quality**3%
*“Styrofoam cups are superior”*
### **What buyers complain about **
**Size-Overall**26%
*“Too small”*
**Leak-Proof**18%
*“Cups leaked”*
**Value For Money**15%
*“A little pricey”*
**Eco Friendliness**8%
*“I know its not the most eco-friendly option”*
**Quality-Overall**7%
*“Cheap Lids”*
**Strength**4%
*“They are very flimsy”*
**Thickness**3%
*“Inconsistent feel and thin”*
**Ease Of Cleaning**1%
*“you have to figure in time cost of cleaning up”*
**Durability**1%
*“liquid it almost feels like it will break”*
### **Top return reasons **
**Size-Overall**52%
**Value For Money**15%
**Advertised Vs Actual Product**7%
**Leak-Proof**4%
**Ease Of Use**4%
**Product Condition**2%
**Durability**2%
**Material Quality**2%
**Strength**2%
**Quality-Overall**2%
## **Common questions**
- **Is 20 oz styrofoam cups profitable to sell on Amazon United States?**
- The niche generates $320K/yr across 18 tracked products. 7 of 9 products launched in the last 360 days are still selling. 90-day search growth is +9.3%. Flapen's verdict: Worth a look (58/100).
- **How competitive is the 20 oz styrofoam cups niche?**
- 11 brands and 124 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 91% of demand.
- **What do buyers complain about in 20 oz styrofoam cups?**
- Top complaints mined from reviews: Size-Overall, Leak-Proof, Value For Money. The return rate is 0.5%.
- **When does demand for 20 oz styrofoam cups peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the 20 oz styrofoam cups niche?**
- Listings span $12.97–$66.26; the average listing price is $32.17 (sweet spot $15–$100). The average incumbent carries 531 reviews — the moat a new listing must climb.
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