| Mammals by population |
|---|
 |
This is a list of estimated global populations of Marsupials (infraclass Marsupialia) species. This list is not comprehensive, as not all Marsupials have had their numbers quantified.
Some members of Marsupialia are extinct, and thus have population sizes of zero:
- Toolache wallaby (Notamacropus greyi) - last confirmed records from 1924; species persisted in captivity until 1939. Some unconfirmed reports were made as late as the 1970s, but could not be verified. [1]
- Crescent nail-tailed wallaby (Onychogalea lunata) - no confirmed records since 1940s. Estimated to have gone extinct circa 1963. [2]
- Thylacine (Thylacinus cynocephalus) - last recorded wild individual captured in 1933, and died in captivity in 1936. [3]
 |
| Common name | Scientific name | IUCN Red List status | Trend | Global population estimate (year) | Population notes | Range | Image |
|---|---|---|---|---|---|---|---|
| Common wombat (Bare-nosed womat) | Vombatus ursinus | LC [4] |  [4] | >915,090 (2020) [5] 1,000,000-2,000,000 (2025) [4] | Only includes subpopulations from three islands (Maria, Flinders, and Tasmania) of two subspecies (V. u. ursinus and V. u. tasmaniensis). [5] Mainland populations are estimated to be slightly less than 1.0 million individuals. [4] |  |  |
| Southern hairy-nosed wombat | Lasiorhinus latifrons | LC [6] |  [6] | 250,000–500,000 (2025) [6] | Best estimate for number of mature individuals is 400,000. [6] |  |  |
| Northern hairy-nosed wombat | Lasiorhinus krefftii | CR [7] | [7] | 315 (2021) [8] | IUCN estimates population at 80 mature individuals (2016). [7] |  |  |
| Koala | Phascolarctos cinereus | VU [9] |  [9] | 100,000–500,000 (2020) [9] | Best estimate for number of mature individuals is 300,000. [9] |  |  |
| Eastern grey kangaroo | Macropus giganteus | LC [10] | [10] | >12,977,181 (2021) [11] | Population estimate is only for the areas within Australia where commercial harvesting occur. The actual national populations would be significantly higher. [11] |  |  |
| Western grey kangaroo | Macropus fuliginosus | LC [12] | [12] | >2,571,158 (2021) [11] | Population estimate is only for the areas within Australia where commercial harvesting occur. The actual national populations would be significantly higher. [11] |  |  |
| Red kangaroo | Osphranter rufus | LC [13] | [13] | >10,848,470 (2021) [11] | Population estimate is only for the areas within Australia where commercial harvesting occur. The actual national populations would be significantly higher. [11] |  |  |
| Wallaroo (Common wallaroo) | Osphranter robustus | LC [14] | [14] | >2,338,076 (2021) [11] | Population estimate is only for the areas within Australia where commercial harvesting occur. The actual national populations would be significantly higher. [11] |  |  |
| Antilopine kangaroo (Antilopine wallaroo) | Osphranter antilopinus | LC [15] | [15] | [ data missing ] |  |  | |
| Tammar wallaby | Notamacropus eugenii | LC [16] | [16] | 10,000-50,000 (2016) [16] |  |  | |
| Western brush wallaby | Notamacropus irma | LC [17] | [17] | 10,000-50,000 (2025) [17] |  |  | |
| Parma wallaby | Notamacropus parma | VU [18] | [18] | 8,000 (2025) [18] |  |  | |
| Tasmanian devil | Sarcophilus harrisii | EN [19] | [19] | 10,000-25,000 (2008) [19] | Value given is a provisional estimate for mature individuals based on estimated rates of decline. [19] |  |  |
| Thylacine | Thylacinus cynocephalus | EX [3] | N/A | 0 (1936) [20] | Last known individual died in captivity on 7 September, 1936. [20] Last known wild individual was captured in 1933. [3] |  |  |
| Brown-eared woolly opossum | Caluromys lanatus | LC [21] | [21] | 160,000,000 (2019) [22] |  |  | |
| Brown four-eyed opossum | Metachirus nudicaudatus | LC [23] | [23] | 128,000,000 (2019) [22] |  |  | |
| Gray four-eyed opossum | Philander opossum | LC [24] | [24] | 121,000,000 (2019) [22] |  |  | |
| Linnaeus's mouse opossum | Marmosa murina | LC [25] | [25] | 104,000,000 (2019) [22] |  |  |
