Highland Park is bordered on the south, east and west by Dallas and on the north by the city of University Park. Highland Park and University Park together comprise the Park Cities, an enclave of Dallas.
Highland Park is one of the most affluent locations in Texas. It is the most affluent area in Dallas, and ranks fourth overall in all of Texas, based on per capita income. Addresses in Highland Park may use either “Dallas, Texas” or “Highland Park, Texas” as the city designation, although the United States Postal Service prefers the use of the “Dallas, Texas” designation for the sake of simplicity