Dalmatian was a Romance language

Romance languages

The Romance languages are a branch of the Indo-European language family, more precisely of the Italic languages subfamily, comprising all the languages that descend from Vulgar Latin, the language of ancient Rome...

 spoken in the Dalmatia

Dalmatia

Dalmatia is a historical region on the eastern coast of the Adriatic Sea. It stretches from the island of Rab in the northwest to the Bay of Kotor in the southeast. The hinterland, the Dalmatian Zagora, ranges from fifty kilometers in width in the north to just a few kilometers in the south....

 region of Croatia

Croatia

Croatia , officially the Republic of Croatia , is a unitary democratic parliamentary republic in Europe at the crossroads of the Mitteleuropa, the Balkans, and the Mediterranean. Its capital and largest city is Zagreb. The country is divided into 20 counties and the city of Zagreb. Croatia covers ...

, and as far south as Kotor

Kotor

Kotor is a coastal city in Montenegro. It is located in a secluded part of the Gulf of Kotor. The city has a population of 13,510 and is the administrative center of the municipality....

 in Montenegro

Montenegro

Montenegro Montenegrin: Crna Gora Црна Гора , meaning "Black Mountain") is a country located in Southeastern Europe. It has a coast on the Adriatic Sea to the south-west and is bordered by Croatia to the west, Bosnia and Herzegovina to the northwest, Serbia to the northeast and Albania to the...

. The name refers to a pre-Roman tribe of the Illyrian linguistic group

Illyrian languages

The Illyrian languages are a group of Indo-European languages that were spoken in the western part of the Balkans in former times by groups identified as Illyrians: Ardiaei, Delmatae, Pannonii, Autariates, Taulanti...

, Dalmatae

Dalmatae

The Dalmatae or Delmatae were an ancient people who inhabited the core of what would then become known as Dalmatia after the Roman conquest - now the eastern Adriatic coast in Croatia, between the rivers Krka and Neretva...

. The Ragusan dialect of Dalmatian was the official language

Official language

An official language is a language that is given a special legal status in a particular country, state, or other jurisdiction. Typically a nation's official language will be the one used in that nation's courts, parliament and administration. However, official status can also be used to give a...

 of the Republic of Ragusa

Republic of Ragusa

The Republic of Ragusa or Republic of Dubrovnik was a maritime republic centered on the city of Dubrovnik in Dalmatia , that existed from 1358 to 1808...

 – although in later times this came to be superseded by Italian

Italian language

Italian is a Romance language spoken mainly in Europe: Italy, Switzerland, San Marino, Vatican City, by minorities in Malta, Monaco, Croatia, Slovenia, France, Libya, Eritrea, and Somalia, and by immigrant communities in the Americas and Australia...

 (representing the Romance language population) or Serbian

Serbian language

Serbian is a form of Serbo-Croatian, a South Slavic language, spoken by Serbs in Serbia, Bosnia and Herzegovina, Montenegro, Croatia and neighbouring countries....

/Croatian

Croatian language

Croatian is the collective name for the standard language and dialects spoken by Croats, principally in Croatia, Bosnia and Herzegovina, the Serbian province of Vojvodina and other neighbouring countries...

 (for the slavophone population).

Dalmatian speakers lived in the coastal towns: Zadar

Zadar

Zadar is a city in Croatia on the Adriatic Sea. It is the centre of Zadar county and the wider northern Dalmatian region. Population of the city is 75,082 citizens...

, Trogir

Trogir

Trogir is a historic town and harbour on the Adriatic coast in Split-Dalmatia County, Croatia, with a population of 12,995 and a total municipality population of 13,322 . The historic city of Trogir is situated on a small island between the Croatian mainland and the island of Čiovo...

a, Spalato (Split

Split (city)

Split is a Mediterranean city on the eastern shores of the Adriatic Sea, centered around the ancient Roman Palace of the Emperor Diocletian and its wide port bay. With a population of 178,192 citizens, and a metropolitan area numbering up to 467,899, Split is by far the largest Dalmatian city and...

), Ragusa (Dubrovnik

Dubrovnik

Dubrovnik is a Croatian city on the Adriatic Sea coast, positioned at the terminal end of the Isthmus of Dubrovnik. It is one of the most prominent tourist destinations on the Adriatic, a seaport and the centre of Dubrovnik-Neretva county. Its total population is 42,641...

), and Kotor

Kotor

Kotor is a coastal city in Montenegro. It is located in a secluded part of the Gulf of Kotor. The city has a population of 13,510 and is the administrative center of the municipality....

 (Jadera, Tragur, Spalatro, Raugia and Cattaro), each of these cities having a local dialect, and on the islands of Krk

Krk

Krk is a Croatian island in the northern Adriatic Sea, located near Rijeka in the Bay of Kvarner and part of the Primorje-Gorski Kotar county....

, Cres

Cres

Cres is an Adriatic island in Croatia. It is one of the northern island in the Kvarner Gulf and can be reached via ferry from the island Krk or from the Istrian peninsula ....

 and Rab

Rab

Rab is an island in Croatia and a town of the same name located just off the northern Croatian coast in the Adriatic Sea.The island is long, has an area of and 9,480 inhabitants . The highest peak is Kamenjak at 408 meters...

 (Vikla, Crepsa and Arba).
Almost every city developed its own dialect.