This is a list of geographic portmanteaus. Portmanteaus (also called blends) are names constructed by combining elements of two, or occasionally more, other names. For the most part, the geographic names in this list were derived from two other names or words. Those derived from three or more names are usually considered acronyms or initialisms and can be found in the List of geographic acronyms and initialisms. However, there are exceptions to this two/three rule in both lists, so it is more of a guideline than a hard-and-fast rule. Note that not all combinations of two names are considered portmanteaus. Simple concatenation of two names (whether hyphenated or not) does not produce a portmanteau. Nor does a combinative form of one name plus the full name of another (examples: Eurasia, Czechoslovakia). These kinds of names are excluded from this list.

Regions named from their components

Some regions (including countries and provinces) have names that are portmanteaus of subregions or cities within the region.

Countries

Chinese provinces

Some Chinese provinces have names that are blends of their two largest cities.

Korean provinces

During the Joseon Kingdom, seven Korean provinces (all but the region around the capital) were named by combining the first characters of their two major cities. The provinces were reorganized in the 1890s but the names are still in use. All these traditional provincial names are carried forward by two current provinces and for all except Gangwon (which is the only one where the two carrying the name were split between North and South Korea) a North and a South province of the same name. However note that for most former provinces, the two current provinces with the name are usually not entirely coextensive with the former province. The dates of the former provinces are those when they carried that name; they often existed with a different name before that year.

Somalia provinces

Two of Somalia's federal member states are portmanteaus of the smaller administrative regions (gobols) within the states.

Vanuatu provinces

Half of Vanuatu's provincial names are portmanteaus of their main islands or island groups.

Merged towns

Sometimes a portmanteau name is created from the names of predecessor towns. Names that are merely a concatenation of the predecessor names, such as Budapest, are excluded.

Schools and school districts

Some school districts that serve two or three towns have names that are blends of those towns' names. Or they're a blend of county names that the district covers parts of.

Other regions portmanteaued from their components

Border portmanteaus

A border portmanteau combines the names of two, or occasionally three, adjacent polities (countries, states, provinces, counties, cities) to form a name for a region, town, body of water, or other feature on or near their mutual border.

Regions

Generalized border regions

These are generalized (and unofficial) regions usually centered on cities near state borders in the United States. They usually extend across state lines and their names are portmanteaus of two or three state names.

Other portmanteau regions

Towns, villages, and localities

§ This symbol marks localities with no current population; some of them never had any population.

Blends of country, state, and province names

Note: places listed on the same line are immediately across the border from each other. Some others with non-similar names are also across a border from each other.

Blends of county names

Blends of town names

Bodies of water

Lakes that are on or near borders also sometimes get named with portmanteaus of the neighbouring polities.

Topography

Geographic features on borders or between towns sometimes get border portmanteau names.

Roads and other forms of transportation

These can either run along or near a border or connect two places.

Roads along a border

Connectors

Other border portmanteaus

Maps

Below are maps of the towns (red dots), bodies of water (blue dots), and other geographic features (green dots) that are portmanteaus of country, state, and province names. Also included are pseudo-border portmanteau towns (yellow dots). Map legend:

Pseudo-border portmanteaus

Some places have names that are blends of country, state, and provincial names. However, they are either not near their mutual border, or of regions that do not have a mutual border.

From personal names

Most here are blends of two personal names, but some are of a personal name with some other name or word.

Livestock

Other portmanteaus