A parish is a type of area used by some countries for administrative reasons. It's different from a church parish, so in some places, they call it a civil parish.
Here's a list of countries that use this type of division:
Qld: Before Queensland's land records were digitized and renumbered, parishes were mentioned in title documents. Even though they were never formally removed, they aren't used anymore except in history-related matters.[1]
NSW: Used.[2]
Vic: Used.[3]
Tas: Used until the 20th century, when they were renamed land districts.
SA: Uses hundreds instead[4]
NT: Uses hundreds instead
WA: Not used.
ACT: Not used since the creation of the Territory