| Rank | School District | Total Number of Buses | Buses Used on Daily Routes | Contractor Buses | Students Transported | Annual Route Mileage |
| 1 | Gwinnett County Public Schools (Ga.) | 2,006 | 1,600 | 0 | 135,000 | 24,635,000 |
| 2 | Clark County School District (Nev.) | 1,900 | 1,500 | 0 | 125,000 | 31,000,000 |
| 3 | Los Angeles Unified School District (Calif.) | 1,815 | 1,410 | 515 | 17,000 | 11,100,000 |
| 4 | Fairfax County Public Schools (Va.) | 1,625 | 1,147 | 0 | 130,000 | 16,000,000 |
| 5 | Montgomery County Public Schools (Md.) | 1,529 | 1,202 | 0 | 103,000 | 22,000,000 |
| 6 | Prince George's County Schools (Md.) | 1,267 | 1,051 | 0 | 87,000 | 16,638,034 |
| 7 | Hillsborough County Public Schools (Fla.) | 1,249 | 750 | 0 | 80,000 | 13,489,938 |
| 8 | Cypress-Fairbanks ISD (Texas) | 1,027 | 682 | 0 | 68,000 | 47,500 |
| 9 | DeKalb County School District (Ga.) | 1,024 | 750 | 0 | 55,000 | 18,000,000 |
| 10 | Miami-Dade County Public Schools (Fla.) | 1,007 | 696 | 60 | 42,048 | 10,500,000 |
| 11 | Cobb County School District (Ga.) | 983 | 859 | 0 | 64,937 | 10,986,305 |
| 12 | Baltimore County Schools (Md.) | 933 | 733 | 152 | 74,058 | 17,422,373 |
| 13 | Fulton County Schools (Ga.) | 926 | 678 | 0 | 43,153 | 9,800,000 |
| 14 | Orange County Public Schools (Fla.) | 910 | 527 | 0 | 52,000 | 13,056,403 |
| 15 | Wake County Public School System (N.C.) | 902 | 557 | 0 | 62,300 | 12,400,000 |
| 16 | Chicago Public Schools (Ill.) | 901 | 857 | 857 | 17,000 | 6,994,559 |
| 17 | Charlotte-Mecklenburg Schools (N.C.) | 836 | 836 | | 78,000 | 17,346,000 |
| 18 | The School District of Palm Beach County (Fla.) | 789 | 530 | 30 | 60,510 | 9,584,000 |
| 19 | Loudoun County Public Schools (Va.) | 750 | 532 | 0 | 60,000 | 8,000,000 |
| 20 | Mobile County Public Schools (Ala.) | 728 | 539 | 0 | 24,200 | 10,660,000 |
| 21 | Columbus City Schools (Ohio) | 707 | 494 | 120 | 28,137 | 8,190,000 |
| 22 | Hawaii Department of Education | 691 | 547 | 651 | 23,150 | 4,050,000 |
| 23 | Chesterfield County Public Schools (Va.) | 650 | 510 | 0 | 40,000 | 5,500,000 |
| 24 | Henrico County Schools (Va.) | 600 | 454 | 0 | 31,000 | 11,000,000 |
| 25 | Metro Nashville Public Schools (Tenn.) | 600 | 400 | 0 | 40,000 | 5,728,000 |
| 26 | Austin ISD (Texas) | 550 | 300 | 0 | 22,000 | 3,600,000 |
| 27 | Greenville County Schools (S.C.) | 500 | 400 | 0 | 32,000 | 7,000,000 |
| 28 | Omaha Public Schools (Neb.) | 495 | 384 | 235 | 14,000 | 4,414,937 |
| 29 | San Diego Unified School District (Calif.) | 479 | 280 | 0 | 4,588 | 1,873,476 |
| 30 | Cherokee County School District (Ga.) | 472 | 386 | 0 | 28,000 | 6,200,000 |
| 31 | Baldwin County Schools (Ala.) | 430 | 330 | 0 | 16,000 | 3,822,000 |
| 32 | St. Tammany Parish Public School System (La.) | 415 | 384 | 215 | 21,000 | 5,000,000 |
| 33 | St. Lucie Public Schools (Fla.) | 410 | 303 | 0 | 24,878 | 6,538,225 |
| 34 | Albuquerque Public Schools (N.M.) | 400 | 320 | 44 | 33,634 | 4,152,096 |
| 35 | Atlanta Public Schools (Ga.) | 385 | 283 | 0 | 28,000 | 3,981,380 |
| 36 | Garland ISD (Texas) | 370 | 272 | 0 | 14,500 | 4,900,000 |
| 37 | Portland School District (Ore.) | 368 | 319 | 248 | 10,823 | 3,476,207 |
| 38 | School District U-46, Elgin (Ill.) | 340 | 245 | 0 | 23,000 | 3,800,000 |
| 39 | Special School District (Mo.) | 332 | 245 | 125 | 4,300 | 4,495,733 |
| 40 | Henry County Schools (Ga.) | 326 | 296 | 0 | 22,000 | 5,500,000 |
| 41 | Anoka-Hennepin Schools (Minn.) | 325 | 295 | 295 | 29,000 | 7,100,000 |
| 42 | Beaverton School District (Ore.) | 320 | 270 | 0 | 25,000 | 3,000,000 |
| 43 | Leander ISD (Texas) | 320 | 170 | 0 | 14,000 | 2,000,000 |
| 44 | Stafford County Public Schools (Va.) | 319 | 247 | 0 | 19,000 | 4,500,000 |
| 45 | Denver Public Schools (Colo.) | 309 | 194 | 0 | 5,509 | 1,758,806 |
| 46 | Bossier Parish Schools (La.) | 307 | 233 | 0 | 13,250 | 3,160,000 |
| 47 | Indianapolis Public Schools (Ind.) | 306 | 249 | 306 | 15,000 | 4,000,000 |
| 48 | Salem-Keizer Public Schools (Ore.) | 303 | 224 | 0 | 10,150 | 3,151,559 |
| 49 | St. Paul Public Schools (Minn.) | 283 | 257 | 320 | 25,339 | |
| 50 | Anchorage School District (Alaska) | 280 | 210 | 88 | 22,000 | 1,500,000 |