Treaty of Adams-Onis 1819 Map

Our Treaty of Adams-Onis 1819 map shows the U.S. acquiring the Atlantic coast. Getting Florida was important because it’s a huge peninsula with access to shipping routes. This meant America finally controlled the whole southeastern corner and Gulf Coast.

Map Information

Treaty of Adams-Onis 1819 Map
Original map provided by National Map. Map updated by our team.
Free for personal and commercial purpose. Attribution is required. How to attribute?

On the Map

Here is a chronological breakdown of how the United States grew from the original colonies to its current span.

Year	Acquisition Name	Source / Former Entity
1783	Territory of the Original Thirteen States	Ceded by Great Britain
1803	Louisiana Purchase	Purchased from France
1818	British Cession	Great Britain
1819	Spanish Cession (Florida, parts of LA/CO)	Spain
1845	Texas Annexation	Former Republic of Texas
1846	Oregon Territory	Treaty with Great Britain
1848	Mexican Cession	Mexico
1853	Gadsden Purchase	Purchased from Mexico
1867	Alaska Purchase	Purchased from Russia
1898	Hawaii Annexation	Former Republic of Hawaii
1898	Puerto Rico	Ceded by Spain
1917	Virgin Islands	Purchased from Denmark