ISO 3166-1 (Codes for the representation of names of countries and their subdivisions – Part 1: Country code) is a standard defining codes for the names of countries, dependent territories, and special areas of geographical interest. It is the first part of the ISO 3166 standard published by the International Organization for Standardization.
It defines three sets of country codes:
The United States Minor Outlying Islands is a statistical designation applying to the minor outlying islands and groups of islands that comprise eight United States insular areas and territories in the Pacific Ocean (Baker Island, Howland Island, Jarvis Island, Johnston Atoll, Kingman Reef, Midway Atoll, Palmyra Atoll, and Wake Island) and one in the Caribbean Sea (Navassa Island).
It is defined by the International Organization for Standardization's ISO 3166-1 code. The entry code is ISO 3166-2:UM.
This is a list of countries and dependencies by population. It includes sovereign states, inhabited dependent territories and, in some cases, constituent countries of sovereign states, with inclusion within the list being primarily based on the ISO standard ISO 3166-1. For instance, the United Kingdom is considered a single entity, while the constituent countries of the Kingdom of the Netherlands are considered separately. In addition, this list includes certain states with limited recognition not found in ISO 3166-1. Also given in a percentage is each country's population compared with the world population, which the United Nations estimated at 8.232 billion as of 2025.
This is a list of the world's countries and their dependencies, ranked by total area, including land and water.
This list includes entries that are not limited to those in the ISO 3166-1 standard, which covers sovereign states and dependent territories. All 193 member states of the United Nations plus the two observer states are given a rank number. Largely unrecognised states not in ISO 3166-1 are included in the list in ranked order. The areas of such largely unrecognised states are in most cases also included in the areas of the more widely recognised states that claim the same territory; see the notes in the "Notes" column for each country for clarification.
The following is a list of countries and dependencies ranked by population density, sorted by inhabitants per square kilometre or square mile. The list includes sovereign states and self-governing dependent territories based upon the ISO standard ISO 3166-1. The list also includes unrecognized but de facto independent countries. The figures in the table are based on areas including internal bodies of water such as bays, lakes, reservoirs and rivers. The list does not include entities not on ISO 3166-1, except for states with limited recognition. Thus constituent countries that are not included on ISO 3166-1, and other entities not on ISO 3166-1 such as the European Union, are not included.
Unless otherwise noted, areas and populations are sourced from the United Nations World Population Prospects, which uses the latest censuses and official figures, as well as figures from the Food and Agriculture Organization, an agency of the UN. Data is current as of 2025.
This is a list of countries by trade-to-GDP ratio, i.e. the sum of exports and imports of goods and services, divided by gross domestic product, expressed as a percentage, based on the data published by World Bank. The list includes sovereign states and self-governing dependent territories based upon the ISO standard ISO 3166-1.
Imports of goods and services represent the value of all goods and other market services received from the rest of the world. Exports of goods and services represent the value of all goods and other market services provided to the rest of the world. They include the value of merchandise, freight, insurance, transport, travel, royalties, license fees, and other services, such as communication, construction, financial, information, business, personal, and government services. They exclude compensation of employees and investment income (formerly called factor services) and transfer payments. The trade-to-GDP ratio is also known as the "trade openness index".