The flag for U.S. Outlying Islands, which may show as the letters UM on some platforms. This is the same flag as the United States.
The Flag: U.S. Outlying Islands emoji is a flag sequence combining ? Regional Indicator Symbol Letter U and ? Regional Indicator Symbol Letter M. These display as a single emoji on supported platforms.
Flag: U.S. Outlying Islands was added to Emoji 1.0 in 2015.
U+1F1FA
U+1F1F2
?? Regional indicator symbol letter u
?? Regional indicator symbol letter m