The postal code of Nigeria is a six-digit numeric code. The Nigerian Postal Service (NIPOST) divides the country into nine regions, and those regions determine the first digit of the six-digit code. The second and third digits, combined with the first, are the dispatch district for outgoing sorting, while the last three digits represent the delivery location, which can be a post office facility, a rural area, or an urban area. The main postal head office in each region will have a postal code ending in 0001, so Garki Main HO in Abuja has the postal code 900001, Ikeja HO in Lagos has 100001, Lokoja in Kogi has 270001, and Port Harcourt has 500001. The lowest postal code is 100001, and the highest is 982002.