There are 233 Post Offices in Harris County, Texas, serving a population of 4,525,519 people in an area of 1,705 square miles. There is 1 Post Office per 19,422 people, and 1 Post Office per 7 square miles.
In Texas, Harris County is ranked 248th of 254 counties in Post Offices per capita, and 2nd of 254 counties in Post Offices per square mile.