Wasn't sure if this would help anyone else out. So I thought I would share it. At least it will give you an idea of where to quest at different levels.
Zone Level Chart
Level Range Zone Name Continent PvP Status Notes
1-10 Dun Morogh Eastern Kingdoms Alliance Dwarf / Gnome
1-10 Durotar Kalimdor Horde Orc / Troll Starting Zone
1-10 Elwynn Forest Eastern Kingdoms Alliance Human Starting Zone
1-10 Mulgore Kalimdor Horde Tauren Starting Zone
1-10 Teldrassil Kalimdor Alliance Night Elf Starting Zone
1-10 Tirisfal Glades Eastern Kingdoms Horde Undead Starting Zone
10-20 Darkshore Kalimdor Alliance
10-20 Loch Modan Eastern Kingdoms Alliance
10-20 Silverpine Forest Eastern Kingdoms Horde
10-20 Westfall Eastern Kingdoms Alliance
10-25 The Barrens Kalimdor Horde
15-25 Redridge Mountains Eastern Kingdoms Contested-Alliance Favored
15-27 Stonetalon Mountains Kalimdor Contested-Horde Favored
18-30 Ashenvale Forest Kalimdor Contested-Alliance Favored
18-30 Duskwood Eastern Kingdoms Contested-Alliance Favored
20-30 Hillsbrad Foothills Eastern Kingdoms Contested
20-30 Wetlands Eastern Kingdoms Contested-Alliance Favored
25-35 Thousand Needles Kalimdor Contested-Horde Favored
30-40 Alterac Mountaints Eastern Kingdoms Contested
30-40 Arathi Highlands Eastern Kingdoms Contested
30-40 Desolace Kalimdor Contested-Horde Favored
30-45 Stranglethorne Vale Eastern Kingdoms Contested
35-45 Badlands Eastern Kingdoms Contested
35-45 Dustwallow Marsh Kalimdor Contested
35-45 Swamp of Sorrows Eastern Kingdoms Contested
40-50 Feralas Kalimdor Contested
40-50 Hinterlands, The Eastern Kingdoms Contested
40-50 Tanaris Kalimdor Contested
43-50 Searing Gorge Eastern Kingdoms Contested
45-55 Azshara Kalimdor Contested
45-55 Blasted Lands Eastern Kingdoms Contested
48-55 Felwood Kalimdor Contested
48-55 Un'Goro Crater Kalimdor Contested
50-58 Burning Steppes Eastern Kingdoms Contested
51-58 West Plaguelands Eastern Kingdoms Contested
53-60 East Plaguelands Eastern Kingdoms Contested
53-60 Winterspring Kalimdor Contested
55-60 Deadwind Pass Eastern Kingdoms Contested
55-60 Silithus Kalimdor Contested
Zone Level Chart
Level Range Zone Name Continent PvP Status Notes
1-10 Dun Morogh Eastern Kingdoms Alliance Dwarf / Gnome
1-10 Durotar Kalimdor Horde Orc / Troll Starting Zone
1-10 Elwynn Forest Eastern Kingdoms Alliance Human Starting Zone
1-10 Mulgore Kalimdor Horde Tauren Starting Zone
1-10 Teldrassil Kalimdor Alliance Night Elf Starting Zone
1-10 Tirisfal Glades Eastern Kingdoms Horde Undead Starting Zone
10-20 Darkshore Kalimdor Alliance
10-20 Loch Modan Eastern Kingdoms Alliance
10-20 Silverpine Forest Eastern Kingdoms Horde
10-20 Westfall Eastern Kingdoms Alliance
10-25 The Barrens Kalimdor Horde
15-25 Redridge Mountains Eastern Kingdoms Contested-Alliance Favored
15-27 Stonetalon Mountains Kalimdor Contested-Horde Favored
18-30 Ashenvale Forest Kalimdor Contested-Alliance Favored
18-30 Duskwood Eastern Kingdoms Contested-Alliance Favored
20-30 Hillsbrad Foothills Eastern Kingdoms Contested
20-30 Wetlands Eastern Kingdoms Contested-Alliance Favored
25-35 Thousand Needles Kalimdor Contested-Horde Favored
30-40 Alterac Mountaints Eastern Kingdoms Contested
30-40 Arathi Highlands Eastern Kingdoms Contested
30-40 Desolace Kalimdor Contested-Horde Favored
30-45 Stranglethorne Vale Eastern Kingdoms Contested
35-45 Badlands Eastern Kingdoms Contested
35-45 Dustwallow Marsh Kalimdor Contested
35-45 Swamp of Sorrows Eastern Kingdoms Contested
40-50 Feralas Kalimdor Contested
40-50 Hinterlands, The Eastern Kingdoms Contested
40-50 Tanaris Kalimdor Contested
43-50 Searing Gorge Eastern Kingdoms Contested
45-55 Azshara Kalimdor Contested
45-55 Blasted Lands Eastern Kingdoms Contested
48-55 Felwood Kalimdor Contested
48-55 Un'Goro Crater Kalimdor Contested
50-58 Burning Steppes Eastern Kingdoms Contested
51-58 West Plaguelands Eastern Kingdoms Contested
53-60 East Plaguelands Eastern Kingdoms Contested
53-60 Winterspring Kalimdor Contested
55-60 Deadwind Pass Eastern Kingdoms Contested
55-60 Silithus Kalimdor Contested