 The population density was 717.4 people per square mile (277.0/km²).The racial makeup of Middletown was 985 (74.5%) White, 5 (0.4%) African American, 28 (2.1%) Native American, 18 (1.4%) Asian, 0 (0.0%) Pacific Islander, 225 (17.0%) from other races, and 62 (4.7%) from two or more races.Hispanic or Latino of any race were 413 people (31.2%).