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21st Century (Teens › Education & Reference › History › United States, Books): Amazon KDP category data
Amazon Books Best Sellers data for 21st Century (Teens › Education & Reference › History › United States, Books), updated Nov 2, 2026: median price $13.99, median 13 reviews, average rating 4.4 and a KDPTop opportunity score of 23/100 (highly competitive).
| Price range (middle 50%) | $10.95 – $21.27 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 1% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 8% of the parent category United States (167), one of the easier corners under it.
- Only 1% of its best sellers are under 90 days old, fewer than in 97% of Books categories: established titles hold the list.
- Its review barrier is lower than in 79% of Books categories: the median best seller has only 13 reviews, so new books can chart with few.
Top 10 21st Century best sellers
-
Unbelievable Basketball Legends Stories for Kids: Inspiring True Tales with Facts and Trivia for Young Readers Sports Fans
by Dream Bigger Books
- List rank#1
- Price$10.99
- Rating4.6
- Reviews117
-
Lincoln: A Newbery Award Winner ― A Biography of Abraham Lincoln's Early Life, for Kids (Ages 10-12)
- List rank#2
- Price$8.12
- Rating4.7
- Reviews303
-
The Most Incredible Golf Stories of All Time for Young Readers: True Inspirational Tales About Perseverance and Courage to Inspire Young Golf Lovers (Inspiring Sports Stories for Kids)
by Jordan Anders
- List rank#3
- Price$14.95
- Rating4.3
- Reviews43
-
Black Birds in the Sky: The Story and Legacy of the 1921 Tulsa Race Massacre ― The Story of the Tulsa Race Massacre
by Brandy Colbert
- List rank#4
- Price$9.59
- Rating4.5
- Reviews227
-
The President's House: A First Daughter Shares the History and Secrets of the World's Most Famous Home
by Margaret Truman
- List rank#5
- Price$16.69
- Rating4.2
- Reviews209
-
Unequal: A Story of America
by Michael Eric Dyson
- List rank#6
- Price$1.99
- Rating4.8
- Reviews229
-
The Most Incredible Female Sports Stories of All Time for Young Readers: True Inspirational Tales About Perseverance and Courage to Inspire Young Sports Lovers (Inspiring Sports Stories for Kids)
by Jordan Anders
- List rank#7
- Price$13.99
- Rating4.9
- Reviews23
-
Learn A Lot While You Sit On The Pot For Teens: Funny Bathroom Reader - Trivia, Mysteries, And Fun Facts For Teenagers (Alex Smart's Bathroom Readers)
by Alex Smart
- List rank#8
- Price$9.99
- Rating4.4
- Reviews115
-
Bad Boy: A Memoir
- List rank#9
- Price$10.21
- Rating4.6
- Reviews471
-
With Their Eyes: September 11th
by Annie Thoms
- List rank#10
- Price$1.99
- Rating4.2
- Reviews102
FAQ
Is 21st Century a good niche for Amazon KDP?
Its KDPTop opportunity score is 23/100, which makes it highly competitive. The median best seller has 13 reviews and sells for $13.99.
How many reviews do you need to rank in 21st Century?
The median best seller has 13 reviews, and 86% of them have fewer than 100.
What do 21st Century best sellers cost?
The median price is $13.99; half of the best sellers are priced between $10.95 and $21.27.
Can new books break into 21st Century?
1% of the current best sellers were released in the last 90 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.