In Mexico addresses are frequently written with just the street name and number (thus: Madero 125), which can lead to confusion as many streets are known only as numbers (C 17). Calle (C) means “street”; Avenida (Av), Bulevar (Blv), Calzada and Paseo are other common terms – most are named after historical figures or dates. An address such as Hidalgo 39 8° 120, means Hidalgo no. 39, 8th floor, room 120 (a ground-floor address would be denoted PB for planta baja). Many towns have all their streets laid out in a numbered grid fanning out from a central point – often with odd-numbered streets running east–west, even ones north–south. In such places a suffix – Ote (for Oriente, East), Pte (for Poniente, West), Nte (for Norte, North) or Sur (South) – may be added to the street number to tell you which side of the two central dividing streets it is.
Note that “s/n” is used in an address to indicate “sin número”, meaning that the building in question does not have a street number.