If you've read everything on this list and still want more, I just so happen to know of some other titles that you might enjoy.
YA/SF/BER
In the year 2100, as the island of Wing is about to be covered by water, fifteen-year-old Mara discovers the existence of New World sky cities that are safe from the storms and rising waters, and convinces her people to travel to one of these cities in order to save themselves.
Matched - Ally Condie
YA/FAN/CON
All her life, Cassia has never had a choice. The Society dictates everything: when and how to play, where to work, where to live, what to eat and wear, when to die, and most importantly to Cassia as she turns 17, who to marry. When she is Matched with her best friend Xander, things couldn't be more perfect. But why did her neighbor Ky's face show up on her match disk as well?
The Declaration - Gemma Malley
YA/SF/MAL
In 2140 England, where drugs enable people to live forever and children are illegal, teenaged Anna, an obedient "Surplus" training to become a house servant, discovers that her birth parents are trying to find her.
Tomorrow, When the War Began - John Marsden
YA/FIC/MAR
Seven Australian teenagers return from a camping trip in the bush to discover that their country has been invaded and they must hide to stay alive.
The Secret Under My Skin - Janet McNaughton
YA/SF/MCN
In the year 2368, humans exist under dire environmental conditions and one young woman, rescued from a workcamp and chosen for a special duty, uses her love of learning to discover the truth about the planet's future and her own dark past.
Fever Crumb - Philip Reeve
YA/SF/REE
Foundling Fever Crumb has been raised as an engineer although females in the future London, England, are not believed capable of rational thought, but at age fourteen she leaves her sheltered world and begins to learn startling truths about her past while facing danger in the present.
Divergent - Veronica Roth
YA/SF/ROT
In a future Chicago, sixteen-year-old Beatrice Prior must choose among five predetermined factions to define her identity for the rest of her life, a decision made more difficult when she discovers that she is an anomoly who does not fit into any one group, and that the society she lives in is not perfect after all.
Unwind - Neal Shusterman
YA/SF/SHU
In a future world where those between the ages of thirteen and eighteen can have their lives "unwound" and their body parts harvested for use by others, three teens go to extreme lengths to uphold their beliefs--and, perhaps, save their own lives.
Memento Nora - Angie Smibert
YA/SF/SMI
In a near future in which terrorism is commonplace but memories of horrors witnessed can be obliterated by a pill, teens Nora, Winter, and Micah, create an underground comic to share with their classmates the experiences they want to remember.
The Scorpio Races - Maggie Stiefvater
YA/SF/STI
Nineteen-year-old returning champion Sean Kendrick competes against Puck Connolly, the first girl ever to ride in the annual Scorpio Races, both trying to keep hold of their dangerous water horses long enough to make it to the finish line.
The Comet's Curse - Dom Testa
YA/SF/TES
Desperate to save the human race after a comet's deadly particles devastate the adult population, scientists create a ship that will carry a crew of 251 teenagers to a home in a distant solar system.
Blood Red Road - Moira Young
YA/SF/YOU
In a distant future, eighteen-year-old Lugh is kidnapped, and while his twin sister Saba and nine-year-old Emmi are trailing him across bleak Sandsea they are captured, too, and taken to brutal Hopetown, where Saba is forced to be a cage fighter until new friends help plan an escape.
