cummins postcode sa Home ›› Postcode Finder ›› SA ›› Cummins Cummins local listingsThe suburb of Cummins is located in SA and has a postcode of 5631. Free cummins business listing! 1Cummins Area SchoolMcFarlane St 08 867623882EP Analysis26 Railway Tce 0428762972 View more business listings in cummins Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.