The Hitchhiker’s Guide to the Galaxy by Douglas Adams
Best Books of the Decade: 1970s
1,946 books — 1,880 voters
1984 by George Orwell
Best Books of the Decade: 1940s
831 books — 1,144 voters

One Flew Over the Cuckoo’s Nest by Ken KeseyTo Kill a Mockingbird by Harper Lee
Best Books of the Decade: 1960s
1,356 books — 1,779 voters
Harry Potter and the Sorcerer's Stone by J.K. RowlingA Game of Thrones by George R.R. MartinDeal Breaker by Harlan CobenThe Fellowship of the Ring by J.R.R. TolkienShelter by Harlan Coben
Best Series
3,345 books — 9,420 voters

The Catcher in the Rye by J.D. Salinger
Best Books of the Decade: 1950s
1,180 books — 1,510 voters
Siddhartha by Hermann Hesse
Best Books of the Decade: 1920s
764 books — 1,133 voters

Live Wire by Harlan CobenThe Martian by Andy WeirGone Girl by Gillian FlynnThe Slight Edge by Jeff OlsonDefending Jacob by William Landay
Best Books of the Decade: 2010s
7,644 books — 14,148 voters
Harry Potter and the Deathly Hallows by J.K. RowlingThe Book of Basketball by Bill SimmonsHarry Potter and the Half-Blood Prince by J.K. RowlingA Storm of Swords by George R.R. MartinJust One Look by Harlan Coben
Best Books of the Decade: 2000s
7,189 books — 28,379 voters

Harry Potter and the Prisoner of Azkaban by J.K. RowlingA Game of Thrones by George R.R. MartinHarry Potter and the Sorcerer's Stone by J.K. RowlingOne False Move by Harlan Coben
Best Books of the Decade: 1990s
3,129 books — 3,678 voters
The Hobbit, or There and Back Again by J.R.R. TolkienOf Mice and Men by John Steinbeck
Best Books of the Decade: 1930s
904 books — 1,254 voters

Watchmen by Alan             Moore
Best Books of the Decade: 1980s
2,258 books — 2,434 voters
Harry Potter and the Deathly Hallows by J.K. RowlingThe Book of Basketball by Bill SimmonsHarry Potter and the Half-Blood Prince by J.K. RowlingLive Wire by Harlan CobenA Storm of Swords by George R.R. Martin
Best Books Ever
75,831 books — 281,774 voters