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The term population refers to the total number of individuals inhabiting a planet, country, colony, or settlement.

Planets with signs of refined metals and alloys were a good indicator of possessing a population, as was suggested by T'Pol upon discovering the remnants of the planet Xindus. (ENT: "The Xindi")

When the con artist posing as Ardra first appeared to the Ventaxians in 2367, she presented a form containing guidelines "for a full census of the population with emphasis on productivity and economic forecasts" of the planet Ventax II. (TNG: "Devil's Due")


The only thing that kept the tribble population in check on Iota Geminorum IV was that planet's abundance of reptiles. (ENT: "The Breach") When left unchecked, a few tribbles can quickly multiply into numbers exceeding several thousands, as was the case on Deep Space Station K-7. In 2268, a population of 1,771,561 had established itself on the station, a figure that was determined by assuming "that one tribble multiplying with an average litter of ten producing a new generation every 12 hours over a period of three day. (TOS: "The Trouble with Tribbles"; DS9: "Trials and Tribble-ations")

During the mid-23rd century, the planet Gideon suffered from an extreme case of overpopulation. Gideon ambassador Hodin explained the cause of this, stating that, "the birth rate continued to rise, and the population grew, until now Gideon is encased in a living mass…who can find no rest, no peace, no joy." (TOS: "The Mark of Gideon")

When the threat of a Skorr jihad was revealed in 2270, Spock calculated that in two standard years, the Skorr would be capable of breeding an army of 200 billion warriors. (TAS: "The Jihad")

During the evacuation of Romulan refugees in the 2380s, the Qowat Milat helped relocate more then 250,000 refugees on Vashti alone. In 2385, 10,000 refugees were settled in Southeast Station. (PIC: "Absolute Candor")


According to Spock, 6 million people died in Earth's World War I, 11 million in the World War II, 37 million in the World War III. (TOS: "Bread and Circuses") Phlox, and later Jonathan Archer, stated that, officially, 30 million people died in the Eugenics Wars. (ENT: "Borderland", "Cold Station 12") William T. Riker, as well as Seven of Nine, stated that 600 million were killed in World War III. (Star Trek: First Contact; VOY: "In the Flesh") The Xindi attack on Earth resulted in 7 million Human casualties. (ENT: "The Expanse", et al.)

During the Denobulan-Antaran wars, Denobulan battle tactics resulted in 20 million Antaran casualties. (ENT: "The Breach")

The mutagenic virus created by the Loque'eque infected tens of millions of people on Tret's homeworld, all of whom were destroyed. (ENT: "Extinction")

Twelve million Valakian died on the planet Valakis in 2149, as a result of an unknown plague. (ENT: "Dear Doctor")

By the 2260s, war casualties among the civilian population of Eminiar VII were totaling from 1 to 3 million dead each year from direct enemy attack during the Eminiar-Vendikar War. (TOS: "A Taste of Armageddon")

In an alternate timeline, during the Federation-Klingon War the Federation had amassed 40 billion casualties between 2344 and 2366. (TNG: "Yesterday's Enterprise")

Dukat was responsible for the deaths of 5 million Bajorans during the Occupation of Bajor. (DS9: "Waltz") In all, it was determined that as many as 15 million Bajorans were killed during the Occupation. (DS9: "The Darkness and the Light")

The attack of the missile Cardassian ATR-4107 with Rakosa V was expected to cause 2 million casualties in a worse case scenario. The attack was prevented. (VOY: "Dreadnought")

The population of the inhabitants of the dimensionally shifting planet Meridian had dwindled to about thirty by the year 2371 due to the fact that the people could only reproduce while in their humanoid form, and their time in normal space was constantly growing shorter. (DS9: "Meridian")

Over 4 million Borg drones were killed in the Borg-Species 8472 War. (VOY: "In the Flesh")

In 2374, Julian Bashir and the group of genetically-engineered from the "Institute" that he worked with, calculated that before the Dominion War was over, the Federation would suffer 900 billion casualties in the years to come. (DS9: "Statistical Probabilities")

In the final days of the war, the Dominion eliminate 2 million men, women and children when they destroyed Lakarian City. In all, they annihilated over 800 million of the inhabitants of Cardassia Prime. (DS9: "What You Leave Behind") Prior to that, over 7 million Cardassian soldiers had given their lives in the war. (DS9: "The Changing Face of Evil")

A synth attack on Mars that set its stratosphere on fire in the late 24th century resulted in 92,143 lost lives. Early reports as the attack was still in progess estimated 3,000 dead. (PIC: "Remembrance";ST: "Children of Mars")


Among Cheron natives, a hundred million "half-whites" were oppressed. (TOS: "Let That Be Your Last Battlefield")

One out of every fifty million of Tarquin's species were born telepathic on Tarquin's homeworld. Those who are born telepathic are considered a threat to the rest of the population. (ENT: "Exile")

During the early 21st century, six of the eight Human blood types accounted for three quarters of Earth's population. (ENT: "Carpenter Street")

The planet Vulcan had over one million physicians during the mid-22nd century. (ENT: "Stigma")

During the mid-22nd century, Vissian cogenitors made up about 3% of the planet Vissia's population, which was described as being "a perfect ratio" in the terms of being natures way "of finding the right balance." (ENT: "Cogenitor")

A spherical lifeform recorded enough data on the population of Kaminar that a detailed population history could be constructed from it. (DIS: "The Sound of Thunder")

Nearly half of the Trill population was capable of being joined with a Trill symbiont. (DS9: "Equilibrium")

After being brainwashed by the Quarren, Kathryn Janeway described Earth as "Overpopulated, polluted, very little work". According to Jaffen, the Norvalen homeworld was much the same. (VOY: "Workforce")

During the late 24th century, Grand Nagus Zek claimed that females made up 53.5% of Ferenginar's population, yet contributed virtually nothing to the gross planetary income. (DS9: "Profit and Lace")

The script for DS9: "By Inferno's Light" stated that Cardassians made up about one-third of the population of Internment Camp 371.

After it became clear that the Romulan sun was would go supernova, the Federation devised a plan to relocate 900 million Romulan citizens to worlds outside the blast of the supernova. (PIC: "Remembrance")

Population figures

The population figures of various colonies, planets, or civilizations throughout the Milky Way Galaxy.


Location Inhabitants Population Year Reference
Akaali homeworld Akaali 500 million 2151 ENT: "Civilization"
Aldea Aldeans Thousands 2364 TNG: "When The Bough Breaks"
Ariannus Federation 1 billion 2269 TOS: "Let That Be Your Last Battlefield"
Ba'ku planet Ba'ku 300 Star Trek: Insurrection
Beta XII-A Federation colony 100 TOS: "Day of the Dove"
Bozel Prime Bozelian 16 billion 2377 VOY: "Q2"
Brunali homeworld Brunali 10,000 VOY: "Child's Play"
Ceti Alpha V
(alternate timeline)
Humans 6,000 - ENT: "Twilight"
Coridan Coridanite 3 billion ENT: "Shadows of P'Jem"
Daran V - 3.724 billion TOS: "For the World is Hollow and I Have Touched the Sky"
Deneva Federation colony 1 million TOS: "Operation -- Annihilate!"
Denobula Denobulan 12 billion ENT: "The Catwalk"
Draylon II Skrreean 3 million 2370 DS9: "Sanctuary"
(alternate timeline)
Borg 9 billion Borg Star Trek: First Contact
Eminiar VII Eminian Hundreds of millions 2267 TOS: "A Taste of Armageddon"
Evora homeworld Evora 300 million Star Trek: Insurrection
Ferenginar Ferengi Billions DS9: "Prophet Motive"
(alternate timeline)
Humans, Klingons, Trill, hybrids 8,000 2373 DS9: "Children of Time"
Gault Humans 20,000 DS9: "Let He Who Is Without Sin...")
Gamma Hydra IV Federation colony 6 TOS: "The Deadly Years"
Kohl settlement Viorsa's species 400,000 2353 VOY: "The Thaw"
Luna Federation colony 50 million 2373 Star Trek: First Contact
Mantilles Federation colony 82 million 2269 TAS: "One of Our Planets Is Missing"
Marcos XII Federation settlement Millions 2268 TOS: "And the Children Shall Lead"
Meridian Seltin Rakal's species 30 2371 DS9: "Meridian"
Minos Korva Federation colony 2 Million - TNG: "Chain of Command, Part II"
Mudd Androids 207,809 - TOS: "I, Mudd"
Nekrit Expanse planet Humans, Romulans, Klingons, Cardassians, Farn, Parein 80,000 2373 VOY: "Unity"
Norcadia Prime Norcadians 260 million - VOY: "Collective"
Omicron Ceti III Federation colony 150 - TOS: "This Side of Paradise"
Omicron Theta Federation colony 411 2338 TNG: "Datalore"
Otrin's homeworld Otrin's species 5,500 2378 VOY: "Friendship One"
Paraagan II Paraagans 3,600 2151 ENT: "Shockwave"
Penthara IV Federation colony +20 million TNG: "A Matter of Time"
Platonius Platonians 38 2268 TOS: "Plato's Stepchildren"
Rana IV Federation colony 11,000 TNG: "The Survivors"
Ramura Ramurans millions VOY: "Unforgettable"
Rigel XII Mining facility 6 2266 TOS: "Mudd's Women"
Rinax Talaxians 300,000 2355 VOY: "Jetrel"
Sahndara 38 - TOS: "Plato's Stepchildren"
Scalos 900,000 in one nation - TOS: "Wink of an Eye"
Skagaran colony Humans, Skagarans 6,000 Humans, Less than 1,000 Skagaran - ENT: "North Star"
Species 10026 homeworld Species 10026 392,000 2375 VOY: "Dark Frontier"
Talaxian Asteroid 500 - VOY: "Homestead"
Tamaal Outpost +2 million ENT: "Canamar"
Tarsus IV Federation colony 4,000 2247 TOS: "The Conscience of the King"
Tau Cygna V Federation colony 15,000 2366 TNG: "The Ensigns of Command"
Terra Nova Novans 200 2078 ENT: "Terra Nova"
Unnamed Class L planet Humans 100,000 - VOY: "The 37's"
Vaadwaur homeworld Vaadwaur 6 billion
VOY: "Dragon's Teeth"
Valakis Valakian +50 million ENT: "Dear Doctor"
Veridian IV 230 million 2371 Star Trek Generations
Vulcan Vulcans 6 billion 2258 Star Trek
Waters, The Moneans 80,000 - VOY: "Thirty Days"

Regions, empires and species

Location Inhabitants Population Year Reference
Galactic Cluster 3 Species 259 22 billion VOY: "The Gift"
Grid 124, Octant 22-theta Species 6339 11 billion VOY: "Infinite Regress"
Alpha Quadrant Human civilisation Billions 2374 VOY: "Hope and Fear"
Unknown Husnock 50 billion 2366 TNG: "The Survivors"
Malurian system
(4 planets)
Malurian +4 billion TOS: "The Changeling"
Rigel system Millions TOS: "The Doomsday Machine"
Tkon Empire Trillions - TNG: "The Last Outpost"
Sanctuary District A (ca 2024) about 10000 - DS9: "Past Tense, Part I"

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