3x5 Index Cards Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
3x5 Index Cards sales on Amazon US totaled 130,950 units in July 2026 (▲ 66.3% vs. the prior month), generating an estimated $828,711 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 72.5% of unit volume and 67.7% of revenue, while a typical listing is priced at $7.71. The keyword itself pulled 88,946 Amazon queries over the same period (▲ 123.1% MoM).
Zooming out to the 12-month window ending July 2026, the 3x5 index cards Top 50 moved 1,229,250 units and $8,128,503 in cumulative sales — an average of 102,438 units and $677,375 per month. Monthly throughput topped out at 259,400 units in August 2025 and dipped to 42,500 in May 2026, leaving the latest reading 49.5% lower than August 2025.
3x5 Index Cards Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
130.9K
▲ 66.3% MoM
Monthly Revenue 2026/07
$828.7K
▲ 56.2% MoM
Top 10 Market Share 2026/07
72.5%
3x5 Index Cards Market Share & Sales Concentration on Amazon US — July 2026
The most-sold 3x5 index cards listing on Amazon US in July 2026 is ASIN B077K8JVW4 (Brand: Amazon Basics), which sold 30,000 units at $4.99 apiece — equal to 22.9% of every unit tracked in this report and 3.0× the volume of the No. 2 listing.
The Top 10 ASINs account for 95,000 units and $561,130 in July 2026 — 72.5% of unit volume and 67.7% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for '3x5 Index Cards' on Amazon
July 2026
Is 72.5% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
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Top 5 Volume Share breakdown
B077K8JVW4
Amazon Basics Heavy Weight Ruled Index Cards for Studying and Note Taking, White, 3" x 5", 300 Count (Pack of 3)
30K
▲ 50.0%vs. prior month
$149.7K
latest month
12-month trend
B00FX4VAES
Oxford Ruled Index Cards, 3" x 5", White, Lined Index Flashcards, 300 per Pack (10022)
10K
▲ 66.7%vs. prior month
$49.2K
latest month
12-month trend
B00INBSU14
Oxford Heavyweight Ruled Index Cards, 3" x 5", White, 100 Per Pack (63500)
10K
▲ 400.0%vs. prior month
$39.1K
latest month
12-month trend
B0DZ5WN6QX
250 Count Colored Index Cards 3x5 Inch with Key Ring, 180gsm Heavy Weight Flash Cards 5 Color (50 Sheets Each) Portable Note Taking for Students, Teachers, Study Note Cards for Office School Supplies
10K
▲ 25.0%vs. prior month
$68.5K
latest month
12-month trend
B0DSKTZBB6
300 Count Colored Index Cards 3 x 5 Inch Ruled Index Cards, Flash Cards College Ruled for Office School Supplies and Home Organization, Durable Study To Do List Note Cards with Ruled Lines
9K
▲ 28.6%vs. prior month
$61.9K
latest month
12-month trend
B00V5DQJWY
Amazon Basics Ruled Lined Index Cards for Study, Notes and Recipes, White, 3" x 5", 1,000 Count (10 Pack of 100)
7K
▲ 133.3%vs. prior month
$55.1K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best 3x5 Index Cards Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Amazon Basics is the best-performing 3x5 index cards brand in July 2026, moving 47,000 units across 4 ASINs for 49.5% of Top 10 volume. Oxford follows with 26,000 units (27.4%), ahead of AILZFEI on 10,000 units (10.5%).
With 5 brands splitting the Top 10 and 87.4% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $3.86 to $7.25, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Amazon Basics
4 ASINs in Top 10
49.5%
Units
47K
Revenue
$278.5K
Avg. price
$7.25
B077K8JVW4
$4.99·★4.7·32.5K revsAmazon Basics Heavy Weight Ruled Index Cards for Studying and Note Taking, White, 3" x 5", 300 Count (Pack of 3)
Units sold30KB00V5DQJWY
$8.37·★4.7·32.5K revsAmazon Basics Ruled Lined Index Cards for Study, Notes and Recipes, White, 3" x 5", 1,000 Count (10 Pack of 100)
Units sold7KB06XT1H3TN
$8.46·★4.7·32.5K revsAmazon Basics Ruled Lined Index Cards for Notes, Studying, Flash Cards, White, 4" x 6", 500 Count (5 Packs of 100)
Units sold5KB07X5CSNVH
$7.20·★4.7·32.5K revsAmazon Basics Blank Index Cards for Studying and Note Taking, White, 3" x 5", 1000 Count (10 Pack of 100), 7.5 pt. Paper Weight
Units sold5K
Oxford
3 ASINs in Top 10
27.4%
Units
26K
Revenue
$132K
Avg. price
$3.86
B00FX4VAES
$1.89·★4.7·16.5K revsOxford Ruled Index Cards, 3" x 5", White, Lined Index Flashcards, 300 per Pack (10022)
Units sold10KB00INBSU14
$3.89·★4.8·8.1K revsOxford Heavyweight Ruled Index Cards, 3" x 5", White, 100 Per Pack (63500)
Units sold10KB09JYQZQ3V
$5.79·★4.7·4.1K revsOxford Index Cards, 3 x 5 Inches, White, Lined on Front, Blank on Back, Flashcards for School and Studying, Recipe Note Cards, 500 Count (5 Packs of 100) (40176)
Units sold6K
AILZFEI
1 ASIN in Top 10
10.5%
Units
10K
Revenue
$68.5K
Avg. price
$6.99
B0DZ5WN6QX
$6.99·★4.8·848 revs250 Count Colored Index Cards 3x5 Inch with Key Ring, 180gsm Heavy Weight Flash Cards 5 Color (50 Sheets Each) Portable Note Taking for Students, Teachers, Study Note Cards for Office School Supplies
Units sold10K
Trending 3x5 Index Cards Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B0CT8ZBYPM booked 3K units at $6.98, with ▲ 200.0% MoM change. On the growth side, B00006IFDV leads positive momentum with ▲ 700.0% MoM growth on 400 units, with B00INBSU14 close behind at ▲ 400.0% MoM on 10K units.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B0CT8ZBYPM
Colored Index Cards 3x5, 200 Count, 180gsm Heavy Flash Cards for Studying | YIZUUN Ruled Index Cards, Heavy Note Cards for Office, College, Home Organization, 4 Color (50 Sheets Each)
Price
$6.98
Rating
4.8
Reviews
1.3K
Latest month sales
B00006IFDV
Oxford Ruled Color Index Cards, 3" x 5", Canary, 100 Per Pack (7321 CAN)
Price
$5.26
Rating
4.8
Reviews
529
Latest month sales
B00INBSU14
Oxford Heavyweight Ruled Index Cards, 3" x 5", White, 100 Per Pack (63500)
Unlock to view ASIN details and product titles
Price
$3.89
Rating
4.8
Reviews
8.1K
Latest month sales
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