The inhabitants of Todzi (around 600-700 in total) call themselves the Mawu and speak Siwu, a Kwa language that is quite distinct from the dominant regional languages Ewe and Twi.
Logba is only distantly related to its direct neighbours Avatime and Nyagbo-Tafi; according to Bernd Heine (1968) it is more closely related to the Akpafu and Santrokofi languages spoken northwards.