The Lost Library by the numbers
Rebecca Stead & Wendy Mass · first published 2023 · dataset 2026-10-24
Who it is not for: readers below 4th grade: no school list in our data assigns it earlier.
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Length and reading time
| Pages (dataset edition) | 167 |
|---|---|
| Estimated words | 46,000 |
| Reading time, 300 wpm (fast) | 2 h 33 min |
| Reading time, 250 wpm (average adult) | 3 h 4 min |
| Reading time, 200 wpm (careful / younger reader) | 3 h 50 min |
| Days at 20 minutes a day | 10 |
At 167 pages, The Lost Library is longer than 44.3% of the 2,330 books on the reading lists we track whose page count we know (2,809 books are tracked in all). It is shorter than the median book listed for grades 6-8 (212 pages).
The Lost Library is 167 pages; the median book listed for grades 6-8 is 212 pages and the median of all 2,330 listed books with a page count is 187.
Source: Page counts of 2,330 books on U.S. school reading lists, bookstatistics.com · Dataset snapshot 2026-10-24
Show the numbers
| Book | Pages |
|---|---|
| The Lost Library | 167 pages |
| Median book listed for grades 6-8 | 212 pages |
| Median of all listed books | 187 pages |
Word counts and reading times are estimates: pages × 275 words, divided by the reading speed. Your edition's page count and your own pace will differ.
Where The Lost Library is on school reading lists
15 appearances (0.1% of all 20,804 listings in the dataset), drawn from 3 published lists, in grades 4th–8th. 15 of the 15 carry a link to the published source document.
States (3): Kentucky, Michigan, Washington.
| Grade | Listings |
|---|---|
| 4th | 3 |
| 5th | 3 |
| 6th | 3 |
| 7th | 3 |
| 8th | 3 |
Sources
- Michigan Reading Association — Great Lakes Great Books Award (student-choice, grade-band shortlists; annual, since 1989). Winner/honor/nominee rolls Grades 4-5, 6-8, 9-12. · checked 2026-06-12
- Kentucky Association of School Librarians — Kentucky Bluegrass Award Winner's Circle (grades 3-5 + 6-8; annual since 1983) · checked 2026-06-09
- 2026 Sasquatch Book Award Nominees (Washington Library Association) · checked 2026-06-09
Questions
How many pages is The Lost Library?
The Lost Library by Rebecca Stead & Wendy Mass is 167 pages in the edition recorded in our dataset. Page counts vary by edition and format; at about 275 words per page that is roughly 46,000 words.
How long does it take to read The Lost Library?
About 3 h 4 min at an average adult pace of 250 words per minute (2 h 33 min at 300 wpm, 3 h 50 min at 200 wpm). At 20 minutes a day that is about 10 days.
Is The Lost Library on school reading lists?
Yes. It appears 15 times on the U.S. school reading lists, award lists and curricula in our dataset, in 3 states, most often in grades 6-8. That ranks it #199 of 2,809 listed books.
Related
- The Lost Library: reading level, grades and similar booksOn ReadingList, our sister site for school reading lists.
- Books of about the same lengthCrash (162 pp.) · The Call of the Wild (172 pp.) · Shiloh (160 pp.) · The Boxcar Children (160 pp.)
- The most assigned books, rankedAll 2,809 listed books start here.
- Book length statisticsHow long assigned books are, by grade.
Cite this page
<a href="https://bookstatistics.com/books/the-lost-library/">The Lost Library statistics</a>. Book Statistics, a Figures Bureau site. [The Lost Library statistics](https://bookstatistics.com/books/the-lost-library/). Book Statistics, a Figures Bureau site. [url=https://bookstatistics.com/books/the-lost-library/]The Lost Library statistics[/url]. Book Statistics, a Figures Bureau site.