United States of America: Map & Borders Over Time
United States of America appears on 4 of the 39 border maps, from 1783 to 1900. Its mapped territory was largest in 1880, at roughly 9.36 million km². Chronica Maps groups it with the United States lineage, shown in the same colour across periods.
Open 1880 in the interactive map
Territory of United States of America over time
Approximate area on each border map.
| Map year | Approx. area | Change |
|---|---|---|
| 1783 | 2.30 million km² | – |
| 1800 | 2.30 million km² | 0% |
| 1880 | 9.36 million km² | +308% |
| 1900 | 9.36 million km² | +0% |