The majority of the inhabitants of Slovakia are ethnically Slovak (85.8%).
Hungarians are the largest ethnic minority (9.5%).
Other ethnic groups, as of the 2001 census, include Roma with 1.7%, and others or unspecified, 2.4%.
Unofficial estimates on the number of Roma population are much higher, around 9%. Before World War II,135,000 Jews lived in Slovakia.
In 2007 Slovakia was estimated to have a total fertility rate of 1.33. (i.e., the average woman will have 1.33 children in her lifetime), which is significantly below the replacement level and is one of the lowest rates among EU countries.
The Slovaks endured the largest wave of emigration at the end of the 19th and the beginning of the 20th century. In the US census of 1990, a total of 1.8 million people identified themselves as being of Slovak ancestry.
The official language is Slovak, a member of the Slavic language family.
Hungarian is widely spoken in the southern regions and Rusyn is used in some parts of the Northeast.
Minority languages hold co-official status in the municipalities in which the size of the minority population meets the legal threshold of 20%.