Category:Nominal Categories
Feature:Position of Case Affixes WALS
Name:Postpositional clitics
Languages (60):
Conlangs (44):
Khafos
Saya
Tinzirean
Tersales
Yulasa
Isitya
Nizhmel
Torimish
Quenya
Zorillo
Salhari
Manchu
Proto-Frinthan
Kopfberger German
Ata
Okuna
Tatari Faran
Meditsrai
Kaujasakka
Sarikan
Sarian
Adejori
Femmish
Sunbyaku
Minhast
Old Greedian
Indertonne
Settamu
Luquv
Haotyetpi
Hux Kham
Lingwa de Planeta
Tajju-njo Gwa
Leom
Sape
Enlalen
ExoticLang
Kisimbi
Tínaaqhe
Eiidana
Rukun
Cannic
Eremoran 
Almost every case is postpositional.
One, "ad", may be used prepositionally, but with a different meaning.
Another, "dir", must be used prepositionally.
Laadan

Natlangs (16):
Apurina
Awa Pit
Basque
Epena Pedee
Imonda
Kewa
Kanuri
Koasati
Maricopa
Meithei
Paumari
Shipibo-Konibo
Sanuma
Karok
Ika
Coos (Hanis)