Less than 7 percent of their neighbors are black, and fewer than 3 percent are Hispanic or Latino, according to the city health department, which counts greater Roland Park and Poplar Hill as one neighborhood for health profile purposes. Their poverty rate is less than 5 percent, compared to the city’s 29 percent; the unemployment rate is 2.3 percent, compared to 13.1 percent; and their median household income is $104,482, compared to $41,819. They have fewer liquor stores, more green space and a rat population that’s at least 17 times smaller than the city’s overall, according to complaints made to 311. Shootings are rare in their area, along with homicides, vacant buildings and lead-paint violations. Almost all of their children are reading well by the third grade, and they’re expected to live an average of 10.3 years longer than the average Baltimore resident (83.9 years, compared to 73.6).