| Family | Aclerdidae Ferris, 1937 Aclerdid scales, Flat grass scales | 10 80 | Genera Species |
| Family | Adocimycolidae Poinar and Vega, 2023
| 1 1 | Genus Species |
| Family | Albiococcidae Koteja, 2004
| 1 1 | Genus Species |
| Family | Apticoccidae ♰ Vea & Grimaldi, 2015
| 1 3 | Genus Species |
| Family | Arnoldidae ♰ Koteja, 2008
| 1 2 | Genus Species |
| Family | Asterlocaniidae ⇒ Asterolecaniidae
| 0 0 | Genera Species |
| Family | Asterolecaniidae Cockerell, 1896 Asterolecaniids, Pit scales | 31 378 | Genera Species |
| Family | Beesoniidae Ferris, 1950 Beesoniids | 7 20 | Genera Species |
| Family | Burmacoccidae ♰ Koteja, 2004
| 1 1 | Genus Species |
| Family | Callipappidae Koteja, 1996 Bird of Paradise Flies | 1 11 | Genus Species |
| Family | Carayonemidae Richard, 1986 Carayonemids | 0 0 | Genera Species |
| Family | Cerococcidae Balachowsky, 1942 Cerococcids, Ornate Pit Scale Insects, Ornate pit scales | 15 207 | Genera Species |
| Family | Coccidae Stephens, 1829 Soft scale, Soft Scale Insects, Soft scales, Wax scales | 268 3147 | Genera Species |
| Family | Coelostomidiidae ♰ Morrison, 1928
| 2 2 | Genera Species |
| Family | Conchaspididae Green, 1896 False armored scales, False armoured scales | 6 37 | Genera Species |
| Family | Cryptococcidae
| 2 25 | Genera Species |
| Family | Dactylopiidae Signoret, 1875 Cochineal insects, Cochineal scales, Cochineals | 3 167 | Genera Species |
| Family | Diaspididae Maskell, 1878 Armored scale insects, Armored scales, Armoured Scales | 681 6951 | Genera Species |
| Family | Electrococcidae ♰ Koteja, 2000
| 3 4 | Genera Species |
| Family | Eriococcidae Cockerell, 1899 Eriococcid scales, Eriococcids, Felt scale, Felt scales | 144 1576 | Genera Species |
| Family | Grimaldiellidae ♰ Koteja, 2000
| 1 3 | Genus Species |
| Family | Grohnidae ♰ Koteja, 2008
| 1 1 | Genus Species |
| Family | Halimococcidae Brown & McKenzie, 1962 Halimococcids, Pupillarial palm scales | 7 32 | Genera Species |
| Family | Hammanococcidae ♰ Koteja & Azar, 2008
| 1 1 | Genus Species |
| Family | Hodgsonicoccidae ♰ Vea & Grimaldi, 2015
| 1 1 | Genus Species |
| Family | Inkaidae ♰ Koteja, 1989
| 1 1 | Genus Species |
| Family | Jersicoccidae ♰ Koteja, 2000
| 2 5 | Genera Species |
| Family | Kermesidae ♰ Signoret, 1875 Gall-like Scale Insects, Gall-like scales | 16 376 | Genera Species |
| Family | Kermidae Gall-like coccids | 0 0 | Genera Species |
| Family | Kerriidae Lindinger, 1937 Lac Insects, Lac scales | 7 97 | Genera Species |
| Family | Kozariidae ♰ Vea & Grimaldi, 2015
| 1 2 | Genus Species |
| Family | Kukaspididae ♰ Koteja & Poinar, 2001
| 1 1 | Genus Species |
| Family | Kuwaniidae ♰ MacGillvray, 1921
| 3 15 | Genera Species |
| Family | Labiococcidae ♰ Koteja, 2000
| 2 2 | Genera Species |
| Family | Lacciferidae Cockerell, 1924 Lac insects, Lac scales | 0 0 | Genera Species |
| Family | Lebanococcidae ♰ Koteja & Azar, 2008
| 1 1 | Genus Species |
| Family | Lecaniodiaspididae
| 1 2 | Genus Species |
| Family | Lecanodiaspididae Borchsenius, 1965 False pit scales, Lecanodiaspidids | 22 177 | Genera Species |
| Family | Lithuanicoccidae ♰ Koteja, 2008
| 1 2 | Genus Species |
| Family | Macrodrilidae Poinar, 2020
| 1 1 | Genus Species |
| Family | Marchalinidae Morrison, 1927
| 1 3 | Genus Species |
| Family | Margarodidae Newstead, 1901 Cottony cushion scales, Giant coccids, Giant scale insects | 75 271 | Genera Species |
| Family | Matsucoccidae Morrison, 1927 Pine bark scales | 2 59 | Genera Species |
| Family | Micrococcidae Silvestri, 1939 Mediterranean scales | 3 20 | Genera Species |
| Family | Monophlebidae Signoret, 1875 Giant scale, Giant Scale Insects, Giant scales | 50 504 | Genera Species |
| Family | Ortheziidae Green, 1896 Ensign coccids, Ensign scale insect, Ensign scales | 40 344 | Genera Species |
| Family | Pennygullaniidae ♰ Koteja & Azar, 2008
| 1 1 | Genus Species |
| Family | Phenacoleachiidae Cox, 1984 Phenacoleachiids | 1 2 | Genus Species |
| Family | Phoenicococcidae Stickney, 1934 Palm scales, Phoenicococcids | 4 4 | Genera Species |
| Family | Pityococcidae Mckenzie, 1942
| 3 8 | Genera Species |
| Family | Pseudococcidae Heymons, 1915 Mealy Bugs, Mealybug, Mealybugs | 394 3827 | Genera Species |
| Family | Putoidae ♰ Beardsley, 1969 Giant mealybugs, Putoids | 3 88 | Genera Species |
| Family | Qinococcidae Wu in Wu et al, 2022
| 4 10 | Genera Species |
| Family | Rhizoecidae Williams, 1969
| 14 218 | Genera Species |
| Family | Serafinidae ♰ Koteja, 2008
| 2 2 | Genera Species |
| Family | Steingeliidae ♰ Morrison, 1927
| 6 14 | Genera Species |
| Family | Steingelliidae
| 0 0 | Genera Species |
| Family | Stictococcidae Lindinger, 1913 Stictococcids | 3 31 | Genera Species |
| Family | Stigmacoccidae Morrison given family status by Hodgson & Foldi, 2006
| 1 5 | Genus Species |
| Family | Weitschatidae ♰ Koteja, 2008
| 3 4 | Genera Species |
| Family | Xylococcidae ♰ Pergrande, 1898 ⇒ Margarodidae
| 4 20 | Genera Species |
| Genus | Parthenolacanium
| 1 | Species |