National flags
Current flags representing sovereign states. These records emphasize legal status, official proportions, construction schedules, and government color guidance.
Civic & regional flags
Flags of cities, provinces, states, cantons, territories, and other subnational governments. These records show how heraldic devices and historical events become civic geometry.
| Flag | Record | Category | Proportions | Reference |
|---|---|---|---|---|
| AmsterdamNL-AMS-CIV-1975 | Civic | 2:3 | View record → | |
| Canton of ZürichCH-ZH-REG-1315 | Civic | 1:1 | View record → | |
| ChicagoUS-CHI-CIV-1917 | Civic | 2:3 customary | View record → | |
| NagoyaJP-NGO-CIV-1907 | Civic | See record | View record → | |
| OsakaJP-OSA-CIV-1894 | Civic | 2:3 | View record → | |
| PragueCZ-PRG-CIV-2004 | Civic | See record | View record → | |
| RotterdamNL-RTM-CIV-1949 | Civic | 2:3 | View record → | |
| St. LouisUS-STL-CIV-1964 | Civic | See record | View record → | |
| Washington, D.C.US-DC-CIV-1938 | Civic | See record | View record → |
Maritime & signal flags
Ensigns identify authority or nationality at sea; signal flags communicate defined messages. Records in this family always separate identity from operational meaning.
| Flag | Record | Category | Proportions | Reference |
|---|---|---|---|---|
| Signal AlphaINT-ICS-A | Maritime | See record | View record → | |
| Signal BravoINT-ICS-B | Maritime | See record | View record → | |
| Signal CharlieINT-ICS-C | Maritime | See record | View record → |
Historical flags
Superseded designs with a precise period of use. Historical entries store both start and end dates so they cannot be mistaken for current flags.
| Flag | Record | Category | Proportions | Reference |
|---|---|---|---|---|
| United States, 15-starUS-HIST-15-1795 | Historical | Not prescribed | View record → | |
| United States, 48-starUS-HIST-48-1912 | Historical | 10:19 government standard | View record → | |
| United States, 49-starUS-HIST-49-1959 | Historical | 10:19 government standard (hoist:fly) | View record → |