There are 175 Post Offices in Suffolk County, New York, serving a population of 1,497,595 people in an area of 912 square miles. There is 1 Post Office per 8,557 people, and 1 Post Office per 5 square miles.
In New York, Suffolk County is ranked 46th of 62 counties in Post Offices per capita, and 8th of 62 counties in Post Offices per square mile.