| 1 | Modest Mouse | Float On | Good News for People Who Love Bad News (2004) |
| 2 | Incubus | Megalomaniac | A Crow Left of the Murder... (2004) |
| 3 | Franz Ferdinand | Take Me Out | Franz Ferdinand (2004) |
| 4 | The Killers | Somebody Told Me | Hot Fuss (2004) |
| 5 | Linkin Park | Breaking the Habit | Meteora (2003) |
| 6 | Muse | Time Is Running Out | Absolution (2003) |
| 7 | Velvet Revolver | Slither | Contraband (2004) |
| 8 | 311 | Love Song | Non-album Single (2004) [From 50 First Dates Soundtrack] |
| 9 | The Killers | Mr. Brightside | Hot Fuss (2004) |
| 10 | Foo Fighters | Darling Nikki | Non-album Single (2003) |
| 11 | Linkin Park | Numb | Meteora (2003) |
| 12 | The Postal Service | Such Great Heights | Give Up (2003) |
| 13 | Jet | Are You Gonna Be My Girl | Get Born (2003) |
| 14 | Green Day | American Idiot | American Idiot (2004) |
| 15 | Yeah Yeah Yeahs | Maps | Fever to Tell (2003) |
| 16 | Marilyn Manson | Personal Jesus | Lest We Forget: The Best Of (2004) |
| 17 | Green Day | Boulevard of Broken Dreams | American Idiot (2004) |
| 18 | Jet | Cold Hard Bitch | Get Born (2003) |
| 19 | Hoobastank | The Reason | The Reason (2003) |
| 20 | Interpol | Slow Hands | Antics (2004) |
| 21 | Beastie Boys | Ch-Check It Out | To the 5 Boroughs (2004) |
| 22 | Three Days Grace | I Hate Everything About You | Three Days Grace (2003) |
| 23 | Social Distortion | Reach for the Sky | Sex, Love and Rock 'n' Roll (2004) |
| 24 | Incubus | Talk Shows On Mute | A Crow Left of the Murder... (2004) |
| 25 | Bad Religion | Los Angeles Is Burning | The Empire Strikes First (2004) |
| 26 | Blink-182 | I Miss You | Blink-182 (2003) |
| 27 | U2 | Vertigo | How to Dismantle an Atomic Bomb (2004) |
| 28 | Linkin Park | Lying From You | Meteora (2003) |
| 29 | Jimmy Eat World | Pain | Futures (2004) |
| 30 | My Chemical Romance | I'm Not Okay (I Promise) | Three Cheers for Sweet Revenge (2004) |
| 31 | Slipknot | Duality | Vol. 3: (The Subliminal Verses) (2004) |
| 32 | Yellowcard | Ocean Avenue | Ocean Avenue (2003) |
| 33 | AFI | Silver and Cold | Sing the Sorrow (2003) |
| 34 | Dashboard Confessional | Vindicated | Non-album Single (2004) [From Spider-Man 2 Soundtrack] |
| 35 | The Strokes | The End Has No End | Room on Fire (2003) |
| 36 | Lostprophets | Last Train Home | Start Something (2004) |
| 37 | Modest Mouse | Ocean Breathes Salty | Good News for People Who Love Bad News (2004) |
| 38 | Audioslave | What You Are | Audioslave (2002) |
| 39 | Gwen Stefani | What You Waiting For? | Love. Angel. Music. Baby. (2004) |
| 40 | The Strokes | Reptilia | Room on Fire (2003) |
| 41 | Velvet Revolver | Fall To Pieces | Contraband (2004) |
| 42 | Franz Ferdinand | This Fire | Franz Ferdinand (2004) |
| 43 | Story of the Year | Anthem Of Our Dying Day | Page Avenue (2003) |
| 44 | Chevelle | Vitamin R (Leading Us Along) | This Type of Thinking (Could Do Us In) (2004) |
| 45 | Morrissey | Irish Blood, English Heart | You Are the Quarry (2004) |
| 46 | Blink-182 | Feeling This | Blink-182 (2003) |
| 47 | The White Stripes | I Just Don't Know What To Do With Myself | Elephant (2003) |
| 48 | Taking Back Sunday | A Decade Under the Influence | Where You Want to Be (2004) |
| 49 | The Strokes | 12:51 | Room on Fire (2003) |
| 50 | Jay-Z & Linkin Park | Numb/Encore | Collision Course (2004) |
| 51 | Audioslave | I Am the Highway | Audioslave (2002) |
| 52 | No Doubt | It's My Life | The Singles 1992–2003 (2003) |
| 53 | The Offspring | (Can't Get My) Head Around You | Splinter (2003) |
| 54 | Switchfoot | Meant To Live | The Beautiful Letdown (2003) |
| 55 | A Perfect Circle | The Outsider | Thirteenth Step (2003) |
| 56 | Keane | Somewhere Only We Know | Hopes and Fears (2004) |
| 57 | Bad Religion | The Empire Strikes First | The Empire Strikes First (2004) |
| 58 | Cypress Hill | What's Your Number [Cypress Hill feat. Tim Armstrong] | Till Death Do Us Part (2004) |
| 59 | Blink-182 | Down | Blink-182 (2003) |
| 60 | Michael Andrews feat. Gary Jules | Mad World | Non-album Single (2004) [From Donnie Darko Soundtrack] |
| 61 | Story of the Year | Until the Day I Die | Page Avenue (2003) |
| 62 | Papa Roach | Scars | Getting Away with Murder (2004) |
| 63 | Snow Patrol | Run | Final Straw (2003) |
| 64 | Beastie Boys | Triple Trouble | To the 5 Boroughs (2004) |
| 65 | Interpol | Evil | Antics (2004) |
| 66 | Korn | Word Up! | Greatest Hits, Vol. 1 (2004) |
| 67 | Switchfoot | Dare You To Move | The Beautiful Letdown (2003) |
| 68 | Green Day | Jesus of Suburbia | American Idiot (2004) |
| 69 | The Hives | Walk Idiot Walk | Tyrannosaurus Hives (2004) |
| 70 | The Offspring | Hit That | Splinter (2003) |
| 71 | The Music | Breakin' | Welcome to the North (2004) |
| 72 | Three Days Grace | Just Like You | Three Days Grace (2003) |
| 73 | Muse | Hysteria | Absolution (2003) |
| 74 | New Found Glory | All Downhill From Here | Catalyst (2004) |
| 75 | The Killers | Smile Like You Mean It | Hot Fuss (2004) |
| 76 | The Cure | The End of the World | The Cure (2004) |
| 77 | Breaking Benjamin | So Cold | We Are Not Alone (2004) |
| 78 | The Walkmen | The Rat | Bows + Arrows (2004) |
| 79 | Korn | Everything I've Known | Take a Look in the Mirror (2003) |
| 80 | Yellowcard | Only One | Ocean Avenue (2003) |
| 81 | The Darkness | I Believe In A Thing Called Love | Permission to Land (2003) |
| 82 | Hoobastank | Same Direction | The Reason (2003) |
| 83 | Beastie Boys | Right Right Now Now | To the 5 Boroughs (2004) |
| 84 | The White Stripes | The Hardest Button To Button | Elephant (2003) |
| 85 | A Perfect Circle | Passive | eMOTIVe (2004) |
| 86 | The Vines | Ride | Winning Days (2004) |
| 87 | Social Distortion | Highway 101 | Sex, Love and Rock 'n' Roll (2004) |
| 88 | 311 | First Straw | Non-album Single (2004) [From 50 First Dates Soundtrack] |
| 89 | Jimmy Eat World | Work | Futures (2004) |
| 90 | Faithless | Mass Destruction | No Roots (2004) |
| 91 | Sum 41 | We're All To Blame | Chuck (2004) |
| 92 | The Shins | New Slang | Oh, Inverted World (2001) |
| 93 | Velvet Revolver | Big Machine | Contraband (2004) |
| 94 | Phantom Planet | Big Brat | Phantom Planet (2004) |
| 95 | Death Cab For Cutie | The Sound of Settling | Transatlanticism (2003) |
| 96 | AFI | Bleed Black | Sing the Sorrow (2003) |
| 97 | Sum 41 | Pieces | Chuck (2004) |
| 98 | Blink-182 | All Of This | Blink-182 (2003) |
| 99 | Morrissey | First Of The Gang To Die | You Are the Quarry (2004) |
| 100 | Green Day | Holiday | American Idiot (2004) |
| 101 | Unwritten Law | Save Me (Wake Up Call) | Non-album Single (2004) [Later on Here's to the Mourning (2005)] |
| 102 | Coheed and Cambria | A Favor House Atlantic | In Keeping Secrets of Silent Earth: 3 (2003) |
| 103 | Jet | Look What You've Done | Get Born (2003) |
| 104 | Atmosphere | Trying To Find A Balance | Seven's Travels (2003) |
| 105 | Slipknot | Vermilion | Vol. 3: (The Subliminal Verses) (2004) |
| 106 | Chronic Future | Time and Time Again | Lines in My Face (2004) |
| 106.7 | Bumblebeez | Pony Ride | Printz (2004) |
About 2004
In 2004, KROQ’s airwaves surged with indie rock anthems from Modest Mouse and Franz Ferdinand, pop-punk’s peak with Green Day and My Chemical Romance, and nu-metal’s evolution via Linkin Park and Velvet Revolver. The year blended raw energy, emotional depth, and eclectic covers, cementing KROQ’s alt-rock legacy.