61156

61156 is a United States ZIP code used by the United States Postal Service to designate a specific geographic area in northern Illinois. ZIP codes in this range are assigned to towns, rural routes, and delivery corridors. The exact boundaries of the 61156 ZIP code can change as postal routes are updated and as municipalities adjust their service areas. The designation is primarily a mailing construct and does not, by itself, indicate population or other demographic attributes.

In astronomy, 61156 is the official designation of a minor planet (asteroid) assigned by the Minor Planet Center. The number 61156 is assigned once an object's orbit has been sufficiently well determined, after which it becomes part of the numbered minor planet catalog. The asteroid would also have provisional designations from its discovery before being numbered.

Beyond postal and astronomical uses, 61156 may appear as a model, part, or catalog number in various industries, including manufacturing, logistics, or software. Because numerals such as 61156 can appear in many unrelated systems, context is required to determine its precise meaning in any given instance.