Outback is a subtheme of Town introduced in 1997 and currently consists of 5 sets. All sets were released in 1997. As of today, the average annual growth of sets in Town Outback is approximately 6.5% per year.
Most valuable Town Outback set
6490 Amazon Crossing $255.73
Largest Town Outback set
6444 Outback Airstrip 167 pieces
Most owned Town Outback set
6550 Outback Racer
LEGO Outback was a subtheme of Town that ran for one year in 1997 and included sets that were centered around the Australian Outback. There are three categories of sets within the Outback theme, being general outback, rescue and news.
5 sets

6444 Outback Airstrip

Theme / Subtheme Town / Outback
Year 1997
Pieces / Minifigs 167 / 3
Availability Retired
6444 LEGO Outback Airstrip
Retail $19.99
Value $196.32
Growth  +882.1%
Annual growth 8.5%

6553 Crisis News Crew

Theme / Subtheme Town / Outback
Year 1997
Pieces / Minifigs 136 / 3
Availability Retired
6553 LEGO Outback Crisis News Crew
Retail $11.99
Value $97.86
Growth  +716.2%
Annual growth 6.2%

6490 Amazon Crossing

Theme / Subtheme Town / Outback
Year 1997
Pieces / Minifigs 116 / 1
Availability Retired
6490 LEGO Outback Amazon Crossing
Retail $14.99
Value $255.73
Growth  +1606.0%
Annual growth 10.7%

6487 Mountain Rescue

Theme / Subtheme Town / Outback
Year 1997
Pieces / Minifigs 68 / 1
Availability Retired
6487 LEGO Outback Mountain Rescue
Retail $5.99
Value $41.57
Growth  +594.0%
Annual growth 3.8%

6550 Outback Racer

Theme / Subtheme Town / Outback
Year 1997
Pieces / Minifigs 49 / 1
Availability Retired
6550 LEGO Outback Racer
Retail $3.99
Value $38.52
Growth  +865.4%
Annual growth 7.9%