KdeJsme.cz is a surname mapping tool in the Czech Republic. The KdeJsme.cz site allows you to search for the frequency of surnames or first names within the Czech Republic. The individual frequencies of surnames or first names are displayed on the map of the Czech Republic with a distinction into municipalities.
The source of information is a publicly available list located on the MVČR website. The displayed data reflect the situation in 2016. The database contains 412,387 unique surnames and 147,511 unique names. Search by EITHER a surname (last name) or forename (first name), NOT both at the same time.