Deal Island is a city located in Maryland. Deal Island has a 2020 population of 371. Deal Island is currently declining at a rate of 0.00% annually and its population has decreased by -21.23% since the most recent census, which recorded a population of 471 in 2010. Deal Island reached it's highest population of 478 in 2013.
The average household income in Deal Island is $61,564 with a poverty rate of 4.04%. The median rental costs in recent years comes to - per month, and the median house value is $121,900. The median age in Deal Island is 65.9 years, 65.8 years for males, and 66 years for females. For every 100 females there are 91.2 males.