40th Birthday Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
40th Birthday sales on Amazon US totaled 60,000 units in July 2026 (▲ 17.0% vs. the prior month), generating an estimated $681,353 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 56.7% of unit volume and 60.4% of revenue, while a typical listing is priced at $10.88. The keyword itself pulled 11,197 Amazon queries over the same period (▼ 28.9% MoM).
Zooming out to the 12-month window ending July 2026, the 40th birthday Top 50 moved 552,150 units and $6,428,518 in cumulative sales — an average of 46,013 units and $535,710 per month. Monthly throughput topped out at 60,000 units in July 2026 and dipped to 26,150 in May 2026, leaving the latest reading 20.8% higher than August 2025.
40th Birthday 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
60K
▲ 17.0% MoM
Monthly Revenue 2026/07
$681.4K
▲ 15.5% MoM
Top 10 Market Share 2026/07
56.7%
40th Birthday Market Share & Sales Concentration on Amazon US — July 2026
The most-sold 40th birthday listing on Amazon US in July 2026 is ASIN B0BBWGCJ46 (Brand: Rosa Vila), which sold 8,000 units at $14.99 apiece — equal to 13.3% of every unit tracked in this report and 1.6× the volume of the No. 2 listing.
The Top 10 ASINs account for 34,000 units and $411,230 in July 2026 — 56.7% of unit volume and 60.4% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for '40th Birthday' on Amazon
July 2026
Is 56.7% 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
B0BBWGCJ46
Funny Happy Birthday Candle, Unique Happy Birthday Gifts for Women and Men, Fun Gift Ideas for 30th, 40th, 50th and 60th Birthdays, Back and Body Hurts Candle, Long-Lasting Scent, Gift-Ready
8K
▲ 33.3%vs. prior month
$118K
latest month
12-month trend
B07T2S93Z8
Jumway Not A Day Over Fabulous Mug Gifts Set- Birthday Gifts for Women - Funny Birthday Gift Ideas for Her,Friends, Coworkers, Her, Wife, Mom, Daughter, Sister, Aunt Ceramic Marble Mug 14 Oz
5K
▲ 0.0%vs. prior month
$99.9K
latest month
12-month trend
B0CTZ7S1M3
Fulmoon Older Wiser Hotter Banner Birthday sign, Champaign Gold | Funny Birthday Decorations for Women men 30th 40th 50th 60th 70th 80th Birthday Party Backdrop Gift
5K
▲ 25.0%vs. prior month
$50K
latest month
12-month trend
B08FBW5WF1
AOPRIE Birthday Girl Headband Happy Birthday Tiara for Women Girls Princess Crown Rhinestone Accessories, Gold
3K
▲ 50.0%vs. prior month
$18K
latest month
12-month trend
B0D6RJFM11
Niyewsor 40th Birthday Gifts Women Men, 40th Birthday Candle | 40th Birthday Decorations for Women Men, 1986 40 Year Old Birthday Gifts for Friend, Sister, Wife, Husband, Handmade, 7oz
3K
▲ 50.0%vs. prior month
$41.7K
latest month
12-month trend
B08LYJGRNG
Bailym 40th Birthday Candles,Gold Number 40 Cake Topper for Birthday Decorations Party Decoration
2K
▲ 0.0%vs. prior month
$12K
latest month
12-month trend
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Best 40th Birthday Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Rosa Vila is the best-performing 40th birthday brand in July 2026, moving 8,000 units across 1 ASIN for 23.5% of Top 10 volume. Jumway follows with 5,000 units (14.7%), ahead of Fulmoon on 5,000 units (14.7%).
Volume is spread across 10 brands, with the top three holding 52.9% between them. No single label controls the shelf, which usually leaves room for a well-differentiated listing to take share without outspending an incumbent. Average selling prices among the leaders run from $9.99 to $19.99, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Rosa Vila
1 ASIN in Top 10
23.5%
Units
8K
Revenue
$118K
Avg. price
$14.99
B0BBWGCJ46
$14.99·★4.7·2.2K revsFunny Happy Birthday Candle, Unique Happy Birthday Gifts for Women and Men, Fun Gift Ideas for 30th, 40th, 50th and 60th Birthdays, Back and Body Hurts Candle, Long-Lasting Scent, Gift-Ready
Units sold8K
Jumway
1 ASIN in Top 10
14.7%
Units
5K
Revenue
$99.9K
Avg. price
$19.99
B07T2S93Z8
$19.99·★4.8·11K revsJumway Not A Day Over Fabulous Mug Gifts Set- Birthday Gifts for Women - Funny Birthday Gift Ideas for Her,Friends, Coworkers, Her, Wife, Mom, Daughter, Sister, Aunt Ceramic Marble Mug 14 Oz
Units sold5K
Fulmoon
1 ASIN in Top 10
14.7%
Units
5K
Revenue
$50K
Avg. price
$9.99
B0CTZ7S1M3
$9.99·★4.7·2.1K revsFulmoon Older Wiser Hotter Banner Birthday sign, Champaign Gold | Funny Birthday Decorations for Women men 30th 40th 50th 60th 70th 80th Birthday Party Backdrop Gift
Units sold5K
Trending 40th Birthday 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. On the growth side, B08399DH4M leads positive momentum with ▲ 100.0% MoM growth on 2K units, with B0BP7LQ7V5 close behind at ▲ 100.0% MoM on 600 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.
B08399DH4M
40th Birthday Gifts for Women, Men, Her, Him - Happy Prank Toilet Paper - 40th Birthday Decorations, Party Supplies Favors - 40 Years Old Funny Gag Gift Ideas, Novelty Bday Present for Friends, Family
Price
$6.99
Rating
4.7
Reviews
10.3K
Latest month sales
B0BP7LQ7V5
9 Pcs 40th Birthday Decoration for Men Women Table Honeycomb Forty Decor
Price
$8.99
Rating
4.6
Reviews
3.4K
Latest month sales
B0FG263P8N
Fulmoon Shorty Hit Forty Banner Glitter 40th Birthday Decor,Champagne Gold | Pre Strung, Glitter, Funny 40th Birthday Party Sign, Men Women Milestone Celebration, Indoor Wall Hanging
Unlock to view ASIN details and product titles
Price
$9.99
Rating
4.7
Reviews
30
Latest month sales
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