| Route | From | To | Dates | Now |
| 21 | Daytona Beach | Eustis (DeLand '27)(Eustis '25)(DeLand '23) | 1923-1945 | 1,44,600 |
| 22 | Crystal River | Indian River City | 1923-1945 | 44,48,50,469 |
| 23 | Dade City (Trunc Rerdell '35) (Ocala '23) | Palmetto | 1923-1945 | 35,39,45,48,470,574 |
| Ocala to Dade City replaced by Old SR 2 (spur) | ||||
| 23 (spur) | Bushnell | Lakeland | 1927 | |
| 23 (spur) | Sumterville | |||
| 23 (spur) | ||||
| 24 | Kissimmee (Mt. Plymouth '3x) | Melbourne | 1923-1945 | 435,437,500,516,530,535 |
| 25 | Sanibel (Olga Bridge) | West Palm Beach | 1923-1945 | 80,25,867 |
| Included a ferry ('3x) | ||||
| 26 | Lake Annie (North New River Canal '3x) | Moore Haven (Fort Lauderdale '25)(Miami '27) | 1923 | 25,84 |
| 27 | Fort Myers | Miami | 1923-1945 | US 41, CR 887, US 41 |
| Also known as Tamiami Trail Naples to Miami was assigned US 94 (1926-1949) |
||||
| 27 (spur) | Monroe Station | E of Pinecrest at the "Y" | 1923-1945 | CR 94 |
| Also known as the Southern loop | ||||
| 27-A | Royal Palm Hammock | Collier City | 1931 | CR 92 |
| 28 | Lake City | Starke (Bunnell '25)(Flagler Beach '37) | 1923 | 100,11 |
| 29 | Perry | Branford | 1923-1925 | |
| 29 | Orlando (Bithlow '25) | SR 25 near Benboe Farms (Moore Haven '25) | 1925-1945 | 15, 70, 66, 710 |
| 29 (spur) | Okeechobee | Jupiter | 193x | |
| 30 | Frostproof | Vero Beach | 1923-1945 | 674,630,60 |
| 31 | Ocala | Waldo | 1923-1945 | 200 |
| 32 | Bradenton | Lake Kissimmee (Avon Park '23) | 1923-1945 | 62,650,653,64 |
| 33 | Alabama State Line south of Florala | Crestview | 1923-1945 | 85 |
| 34 | Brooksville | Dade City | 1923-1945 | 41,50,35,37 |
| 35 | Georgia state line near Lovett | Perry | 1923<-1945/td> | 55,361 |
| 35-A | Green St in Perry | FL 19 in Perry | 1937-1945 | |
| 36 | Leesburg | Inverness | 1923-1945 | 44 |
| 37 | Alabama state line at Dixonville | Milton | 1923-1945 | 87 |
| 38 | Weirsdale | Umatilla | 1923-1945 | 42,450 |
| Highest number in 1923 list | ||||
| 39 | Alabama state line north of Bonifay | Phillips Inlet | 1925-1945 | 79 |
| 40 | Alabama state line south of Florala | Choctawatchee Bay | 1925 | 187,83 |