Obec

It is the smallest administrative unit that is governed by elected representatives.

The legal definition (according to the Czech code of law[1] with similar definition in the Slovak code of law[2]) is: "The municipality is a basic territorial self-governing community of citizens; it forms a territorial unit, which is defined by the boundary of the municipality."

For any other municipality to gain town status, it must have population over 3,000 and must pass an assessment by the chairman of the parliament.

[7] The biggest are the cities of Prague (496.21 km2), Brno (230.18 km2) and Ostrava (214.23 km2), and the town of Ralsko (170.23 km2, including a former military area, with only about 2,000 inhabitants).

[9] After meeting certain conditions such as population over 5,000, being well accessible, having cultural or economical significance and having an urban style of settlement, a municipality can be declared a town (mesto).