| Route | From | To | Dates | Now |
| 1 | Alabama state line at Nunez Ferry | Jacksonville | 1917-1945 | US 90, 10, 12, 63 |
| Began at Pensacola in 1917. Also known as "Old Spanish Trail" for most of its length. An old brick portion of the road is identified by a big brown sign as Old FL SR 1 east of Pensacola |
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| 1 (spur) | Flomaton | Pensacola | 1923-1925 | US 29 |
| Renamed FL 7 in 1925 | ||||
| 1-A | 17th St in Pensacola | "O" St in Escambia County | 1939-1945 | 291 |
| Also along Gregory | ||||
| 1-B | Elmira St. in Milton | Canal St in Milton | 1939 | |
| also along Oak | ||||
| 2 | Georgia state line N of Jennings | Fort Myers | 1917-1945 | 25, 35, 100, 500, 544, 600, SR 29 |
| Lady Lake to Mount Dora is Richey-Simpson Memorial Highway (193x) | ||||
| 2 (spur) | Leesburg | Lakeland | 1923-1945 | SR 33 |
| 2 (spur) | Silver Lake Forks | Mount Dora | 1925-1945 | 19, 44 |
| 2 (spur) | Coleman | Leesburg | 193x-1945 | 35 |
| 2 (spur) | Dade City | Okahumpka | 193x | Via Clay Sink |
| 2 (spur) | Belleview | Rerdell | 193x | Via Bushnell; |
| Part is Getzen Memorial Highway | ||||
| 2 (spur) | Coleman | Lakeland | 193x | Via Webster |
| 2 (spur) | Lakeland | Bartow | 193x-1945 | US 98 |
| 2-A | Colelaugh Rd in Gainesville | Alabama St in Gainesville | 1939 | 20, 329 |
| 3 | Wild's Landing at the Georgia State Line | Orlando | 1917-1945 | US 17, 5, 15, 526, 100, 600 |
| 3-A | Winter Park | Orlando | 1935-1945 | 527 |
| 4 | Georgia State Line North of Hilliard | Miami | 1917-1945 | US 1 |
| 4-A | Miami | Key West | 1925-1945 | US 1 |
| Also known as "Overseas Highway" | ||||
| 5 | High Springs | Fort Myers | 1917-1945 | US 41 |
| Began at Ocala in 1917, and ended in Tampa and St. Petersburg | ||||
| 5 (spur) | Dade City | Denham | 1931 | |
| 5-A | High Springs | Perry | 1925 | |
| 5-S.E. | Crystal River | West Palm Beach | 1939-1945 | -- |
| Number never posted | ||||
| 6 | Haines City | St. Petersburg | 1917-1923 | |
| Replaced by FL 17 | ||||
| 6 | Alabama State Line North of Campbellton | Port St. Joe | 1923-1945 | 71,73,75 |
| 7 | Sarasota | Fort Pierce | 1917-1923 | |
| Replaced by FL 18 from Sarasota to Childs; FL 8 from Childs to Fort Pierce | ||||
| 7 | Alabama State Line South of Flomaton | Pensacola | 1925-1945 | US 29 |
| 8 | Georgia state line north of Tallahassee | Gainesville | 1917-1923 | |
| 8 | Haines City | Fort Pierce | 1923-1945 | FL 17, SR 70 |
| 8-A | Leesburg | Clewiston | 1937-1945 | US 27 |
| Also known as Federal Aid Route #19 | ||||
| 9 | Alabama state line north of Marianna | Apalachicola | 1917-1923 | -- |
| 9 | Georgia State Line S of Quitman | Shady Grove | 1923-1945 | 14, 53 |
| 10 | Alabama state line near Marianna | Panama City | 1917-1923 | |
| 10 | Georgia state line near Beachton | Pensacola (East Point '23) | 1923-1945 | |
| 10 (spur) | Crawfordville | Arran | 1931 | |
| 10 (spur) | Newport Station | Perry | 1931 | US 98 |
| 10-A | Tallahassee | Perry (Tallahassee '35) | 1935-1945 | 30, 265 |
| Magnolia Dr. in Tallahassee | ||||
| 10-B | SR 10 N of Bay Harbor | SR 10 | 1937-1945 | 30 |
| 10-B | SR 10 | Moores Bridge | 1939-1945 | 370 |
| 10-C | St. Andrews | Panama City | 1937-1945 | 30 |
| 10-D | Panama City | Panama City Docks | 1939 | -- |
| 11 | Alabama state line at Flomaton | Pensacola | 1917-1923 | |
| 11 | Georgia State Line south of Thomasville | Capps (Monticello '23) | 1923-1945 | 57 |
| 12 | Tampa | Marco | 1917-1923 | |
| 12 | Georgia State Line north of Bainbridge | East Point (Bristol '23) | 1923-1945 | 12,65,67,379 |
| 13 | Daytona | Leesburg | 1917-1923 | |
| 13 | Cedar Keys | Fernandina Beach (Yulee '25) (Baldwin '23) | 1923-1945 | 24,200 |
| Location fixed in Starke 1937 | ||||
| 13 | Daytona | Leesburg | 1917-1923 | |
| 14 | Palatka | Cedar Keys | 1917-1923 | |
| 14 | Old Town (Gainesville '23) | Hastings | 1923-1945 | 20,26,206,207 |
| 14-A | Deep Creek | Crescent Beach | 1935-1945 | 206 |
| 15 | Gainesville | St. Augustine | 1917-1923 | |
| Last route on the 1917 map | ||||
| 15 | Newport Station (Newport '25) (Brooksville '23) | St. Petersburg | 1923-1945 | 55 |
| Part known as Gulf Coast Highway '3x | ||||
| 15 (spur) | Brooksville | Aripeka (Weekiwachee Springs '3x) | 1925-1945 | 50 |
| 15-A | Wakulla | Panacea | 1937-194x | |
| 15-A (spur) | Newport | Perry | 1937-194x | |
| 16 | Ocala | Aripeka (Crystal River '25) | 1923-1945 | 40,488 |
| 16-A | Ocala | Port Inglis | 1931-1945 | 40 |
| 17 | Deer Park (Haines City '23) | Clearwater (St. Petersburg '23) | 1923-1945 | 580, 590, 600 |
| 18 | Sarasota (Brandenton '35) | Lake Annie | 1923 | 70,780,789 |
| 18-A | Bradenton | Myakka City | 1925 | Via Oneco |
| 18-A | Sarasota | Anna Maria Key | 193x | |
| 19 | Point Washington 'xx (Tallahassee '25)(Shady Grove '23) | Daytona Beach (Ocala '25)(Williston '23) | 1923-1939 | Old FL 500 |
| Part was St. Augustine Road; Renumbered to FL 500 |
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| 19-A | Secotan | Perry | 1937 | |
| 20 | Cottondale | Panama City | 1923-1945 | 75 |
| 20-B | Nixon | Sugar Creek | 1937 | |
| 20-D | Panama City | Panama City Docks | 1939 | |