To understand the administrative structure of Rowland Heights, one must first know the U.S. local government system.

Unlike Korea's city-county-district system, the structure here is state (State) - county (County) - city (City), and unincorporated areas like Rowland Heights occupy a unique position somewhere between counties and cities. Specifically, it is an unincorporated community under the jurisdiction of Los Angeles County in California. Grasping this basic structure is essential to clarify which agencies to contact for each administrative area.

Organized by administrative area, it looks like this: at the state level, it belongs to the State of California. At the county level, it falls under Los Angeles County, specifically the 5th Supervisory District of the LA County Board. In the California State Assembly, it is part of the 55th Assembly District, and in the California State Senate, it corresponds to the 29th Senate District. In the U.S. House of Representatives, it is part of California's 38th Congressional District.

In terms of postal services, it is a single zone with the ZIP code 91748, which covers all of Rowland Heights. Occasionally, this number may be mixed up with those of adjacent areas, so it is important to enter 91748 accurately when filling out address-related documents. The area code is 626, which is shared with Pasadena, Arcadia, Galleria, Diamond Bar, and other areas in the San Gabriel Valley.

The Rowland Unified School District (RUSD) oversees the school administrative area. RUSD includes not only Rowland Heights but also parts of neighboring Hacienda Heights and La Puente. The district office is located in Rowland Heights, and educational-related inquiries such as school assignments, transfers, and special education are handled through RUSD. The most notable public school in Rowland Heights is John A. Rowland High School, which has been designated as a California Distinguished School and a National Blue Ribbon School.

As an unincorporated area, there is no local police department. Law enforcement is handled by the Los Angeles County Sheriff's Department, with the Chaparral Station serving as the substation for the area. Fire services are covered by LA County Fire Station 58. Understanding this structure in advance clarifies which agency to contact in case of emergencies or inquiries. Understanding administrative areas is much more important in real life than one might think, as different agencies govern each administrative area in the U.S., unlike in Korea.