---
title: "Mailbox Lock — $278K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/mailbox-lock"
last_updated: "2026-08-09T00:48:23.113Z"
locale: en
meta:
description: "Niche score 41/100 · $278K/yr market · 243K searches/yr · $10.59 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 41/100 · $278K/yr market · 243K searches/yr · $10.59 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Mailbox Lock — $278K/yr Amazon US Niche (2026) - Flapen"
---
# **mailbox lock**
**Skip it**
A concentrated shelf (top 5 take 86% of clicks) — this niche doesn't clear our bar today.
Market size 50Growth 23Conversion 90Competition 12Returns 58Price range 34Avg price 38Brand share 27Review moat 63Quality gap 42
**Conversion**
**Great****10.8%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****999.44**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Good****2.7%**
return rate — above 5% kills the launch gate
**Market size**
**Good****$278K**
$278K/yr · 243K searches
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Okay****$10.59**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****$6.89–$19.19**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****89%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-3.9%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****86%**
top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, mailbox lock is a $278K/yr Amazon United States market (243K searches/yr). The top 5 brands hold 89% of demand. Verdict: Skip it — 41/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mailbox lock market data**
- **Units sold / yr**
- **30K–40K**
- avg 2,500–3,000/product
- **Revenue / yr**
- **$318K–$424K**
- units × avg price
- **Conversion rate**
- **10.8%**
- **Avg BSR**
- **#17**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **89%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **42 months**
- **Avg seller age**
- **156 days**
## **Competition & brand share**
The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▼falling
**Sellers**
**58**
**Top-5 brand share**
**89%**
Top 20: 100%
**Top-5 click share**
**86%**
Top 20: 100%
**Open market**
**5%**
- VIXAVI48% - PRIME-LINE12% - QBXMY711% - COMPX NATIONAL10% - Yandino7% - CYMGJHNSDE6% - Open — no brand owns it (2 brands, 5%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -3.9% search growth over the last 90 days.
5K3K seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.2×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/mailbox-lock/trend)
## **Top mailbox lock search terms**
- **mailbox lock**79K/yr-24.4%7.3% conv. - **mailbox lock replacement**22K/yr+127.3%11.4% conv. - **mail box lock and key**26K/yr+3.0%3.4% conv. - **mailbox locks**19K/yr+19.3%4.5% conv. - **mailbox locks with keys replacement**25K/yr-52.4%7.8% conv. - **mailbox key**11K/yr+6.3%3.6% conv. - **mailbox key lock replacement**8K/yr+15.6%10.6% conv. - **mail box lock**9K/yr+5.1%8.2% conv. - **mailbox locks with keys**10K/yr-16.9%6.4% conv. - **usps mailbox lock replacement**5K/yr-0.4%7.2% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/mailbox-lock/search-terms)
## **Top mailbox lock 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%15%$42K30%$84K45%$125K60%$167K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Mailbox Lock Replacement - Universal Mailbox Locks with 4 Keys - Easy to Install Mail Box Lock and Key Set - Durable and Secure Lock Replacement with 4 Keys for Almost All Locking Mail Boxes**VIXAVI**$9.80**4.5★526 rev](https://www.amazon.com/dp/B0D9H49H4H) [2**Mailbox Lock 16 mm Comes with 4 Different Lock Plates**QBXMY7**$6.89**4.6★176 rev](https://www.amazon.com/dp/B0D59SGYCX) [3**COMPX NATIONAL USPS-L-1172C National Mailbox Lock C9100 (Lock with 3-Keys)**COMPX NATIONAL**$19.19**4.6★1,380 rev](https://www.amazon.com/dp/B01CEUXCQC) [4**Prime-Line S 4140 Mailbox Lock Replacement Multipurpose Lock for Several Brands ILCO 1003M Keyway Opens Counter-Clockwise with 90 Rotation Nickel Finish (1 Set)**PRIME-LINE**$9.38**4.4★3,939 rev](https://www.amazon.com/dp/B000B4N0PC) [5**Mailbox Lock Replacement with 4 Keys - Multipurpose Mail Box Locks Compatible with Almost All Brands - Universal Lock Pick Set - File Cabinet Lock - Durable and Secure**Yandino**$7.99**4.4★159 rev](https://www.amazon.com/dp/B0F5HJ4XQD)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Mailbox Lock(2 Pack) Universal Front Door & Curbside Mailbox Locks with Keys Replacement - Easy to Install Mail Box Lock with 2 Keys Set Almost All Locking Mail Boxes Durable and Secure (2)**CYMGJHNSDE**$9.78**39 rev3mo ago](https://www.amazon.com/dp/B0GMG5HNVP) [**Mailbox Lock Replacement with 4 Keys - Multipurpose Mail Box Locks Compatible with Almost All Brands - Universal Lock Pick Set - File Cabinet Lock - Durable and Secure**Yandino**$7.99**159 rev1y ago](https://www.amazon.com/dp/B0F5HJ4XQD) [**Mailbox Lock 16 mm Comes with 4 Different Lock Plates**QBXMY7**$6.89**176 rev2y ago](https://www.amazon.com/dp/B0D59SGYCX) [**Mailbox Lock Replacement - Universal Mailbox Locks with 4 Keys - Easy to Install Mail Box Lock and Key Set - Durable and Secure Lock Replacement with 4 Keys for Almost All Locking Mail Boxes**VIXAVI**$9.80**526 rev2y ago](https://www.amazon.com/dp/B0D9H49H4H) [**1 Pack Mailbox Lock with Key Mailbox Lock Replacement for L-1172C Mailbox Key Lock Nickel Finish**Ymtzfu**$16.14**111 rev2y ago](https://www.amazon.com/dp/B0D7CR1KZJ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Mailbox Lock(2 Pack) Universal Front Door & Curbside Mailbox Locks with Keys Replacement - Easy to Install Mail Box Lock with 2 Keys Set Almost All Locking Mail Boxes Durable and Secure (2)**CYMGJHNSDE**$9.78**4.5★**▲ 209%**](https://www.amazon.com/dp/B0GMG5HNVP) [**Mailbox Lock 16 mm Comes with 4 Different Lock Plates**QBXMY7**$6.89**4.6★**▲ 41%**](https://www.amazon.com/dp/B0D59SGYCX) [**Mailbox Lock Replacement - Universal Mailbox Locks with 4 Keys - Easy to Install Mail Box Lock and Key Set - Durable and Secure Lock Replacement with 4 Keys for Almost All Locking Mail Boxes**VIXAVI**$9.80**4.5★**▲ 31%**](https://www.amazon.com/dp/B0D9H49H4H) [**COMPX NATIONAL USPS-L-1172C National Mailbox Lock C9100 (Lock with 3-Keys)**COMPX NATIONAL**$19.19**4.6★**— 1%**](https://www.amazon.com/dp/B01CEUXCQC) [**Hecfu 1 Pack Cabinet Locks with Keys 5/8 Cam Lock keyed Alike Secure Drawer File Cabinet Mailbox Lock Replacement RV Storage Locks Zinc Alloy**Hecfu**$8.48**4.6★**— 1%**](https://www.amazon.com/dp/B09QD4S7BN)
**~~View all trending →~~**
## **What buyers say about mailbox lock**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Locking Mechanism**22%
*“Great lock, easy”*
**Assembly/Installation**17%
*“Installed perfect and works perfect”*
**Size-Overall**14%
*“Fit perfect”*
**Quality-Overall**9%
*“Good quality”*
**Value For Money**8%
*“Great Value”*
**Advertised Vs Actual Product**7%
*“As advertised”*
**Ease Of Use**3%
*“Easy to use”*
**Efficiency**3%
*“Works very well”*
**Strength**3%
*“The build feels solid”*
**Durability**2%
*“Seems durable”*
### **What buyers complain about **
**Locking Mechanism**26%
*“Terrible lock”*
**Size-Overall**22%
*“just a tad smaller”*
**Compatibility-Overall**8%
*“Did not fit”*
**Durability**6%
*“They break easy”*
**Ease Of Use**4%
*“become difficult to use after a period of time”*
**Instructions/User Manual/Troubleshooting**4%
*“I almost sent it back because I couldnt figure out how to get it to work”*
**Quality-Overall**3%
*“Cheap quality also needed to placed order again missing clips to hold lock”*
**Hard Feel**3%
*“The keys are a little rough”*
**Assembly/Installation**2%
*“Super hard to install”*
**Functionality-Overall**2%
*“Didn't work”*
### **Top return reasons **
**Size-Overall**56%
**Locking Mechanism**16%
**Compatibility-Overall**6%
**Advertised Vs Actual Product**6%
**Functionality-Overall**5%
**Defective Material/Parts**3%
**Mechanism Issues**3%
**Value For Money**2%
**Assembly/Installation**1%
**Quality-Overall**1%
## **Common questions**
- **Is mailbox lock profitable to sell on Amazon United States?**
- The niche generates $278K/yr across 9 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -3.9%. Flapen's verdict: Skip it (41/100).
- **How competitive is the mailbox lock niche?**
- 8 brands and 58 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in mailbox lock?**
- Top complaints mined from reviews: Locking Mechanism, Size-Overall, Compatibility-Overall. The return rate is 2.7%.
- **When does demand for mailbox lock peak?**
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- **What does it cost to enter the mailbox lock niche?**
- Listings span $6.89–$19.19; the average listing price is $10.59 (sweet spot $15–$100). The average incumbent carries 999 reviews — the moat a new listing must climb.
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