How populous is this city where San Pedro prison is located as compared to other cities in Bolivia?
San Pedro prison: San Pedro prison or El penal de San Pedro (Saint Peter's Prison) is the largest prison in La Paz, Bolivia renowned for being a society within itself. La Paz:  With an estimated 789,541 residents as of 2015, La Paz is the third-most populous city in Bolivia (after Santa Cruz de la Sierra and El Alto).
third-most populous