It is now included with the rest of the municipality in the Lower Sava Statistical Region.

[3] Sromlje was attested in historical sources as Zwaromes in 1268, Swaroͤmel in 1309, and Zwaroml in 1322, among other spellings.

[4] The parish church in the settlement is dedicated to Saint Martin and belongs to the Roman Catholic Diocese of Celje.

It is an originally medieval building that was rebuilt in the Baroque style in the second half of the 18th century.

A second church in the settlement is dedicated to Saint John of Nepomuk and was built in the 16th century.