Chembarsky Uyezd
Chembarsky Uyezd was one of the subdivisions of the Penza Governorate of the Russian Empire. It was situated in the southwestern part of the governorate. Its administrative centre was Chembar.Demographics
At the time of the Russian Empire Census of 1897, Chembarsky Uyezd had a population of 153,380. Of these, 86.1% spoke Russian, 7.8% Mordvin, 5.8% Tatar and 0.2% Ukrainian as their native language.