Sid Meier’s Civilization VI turned ten in October 2026, and 2K marked it with a sale running 21 October to 4 November on the base game, the post-launch DLC and a “newly re-listed” Platinum Edition. The tracker figures pulled for this piece show 29,014 players in the game, a 24-hour peak of 37,821, a last-30-days average of 27,238 and an all-time peak of 162,314.
Our Civ VI vs Civ VII comparison already settled which of the two to install, and the Civ VII adjacency guide covers the sequel, which moved adjacency onto individual buildings. Neither covers this: in Civ VI a district tile is permanent and its price locks on placement, so order of placement is a resource.
What this covers: the three adjacency tiers and their rounding, what each specialty district wants beside it, the production-cost curve that makes placement order matter, and four city layouts worth settling for — on Civ VI’s final build. Why it matters: a district is a tile you can never farm again, and its cost locks when you place it, not when you finish. Planning six turns late costs production you cannot recover. Who should care: anyone starting a campaign off the anniversary sale, and returning players whose cities stall out around the Medieval era because the districts went down in the wrong places.
What patch this assumes
One number, because Civ VI is finished. The community update list ends at 1.0.12.68, 15 July 2024; the last documented content patch is 1.0.12.53, 29 August 2023 (leader-ability changes, among them Abraham Lincoln’s Industrial Zones moving to +2 Amenities and +3 Loyalty). Firaxis declared the Leader Pass “officially complete” in the April 2023 update. The expansions behind today’s rules are older: Rise and Fall on 7 February 2018 (1.0.0.216), Gathering Storm on 14 February 2019 (1.0.0.290).
Reading the change notes of every documented patch after Gathering Storm, the only adjacency rule that moved belongs to a belief, not a district: the April 2021 Update (1.0.12.9) gave Monasteries of the King a major Holy Site bonus from Rivers.
The three tiers, and the half point that eats your layout
Adjacency on Civ VI districts comes in three values, and the arithmetic is not the sum the tooltip implies:
| Tier | Value | What produces it |
|---|---|---|
| Major | +2 per adjacent tile | A Campus beside a Great Barrier Reef tile; a Gathering Storm Industrial Zone beside an Aqueduct |
| Standard | +1 per adjacent tile | A Campus beside a Mountain; the Government Plaza, which gives +1 to every district touching it |
| Minor | +½ per adjacent tile | Another district tile, and each Woods or Rainforest where a district counts them |
The wiki states the trap: “Minor bonuses are rounded down, so a single feature yielding a minor bonus won’t result in any gain at all. For example, if a Campus is adjacent to a Mountain (which yields a standard bonus) and one district (yielding a minor bonus), it will get a total bonus of +1, not +2.” Its Industrial Zone example is worse: one Mine plus one Lumber Mill, both minor, gives no adjacency at all.
Minor sources are worth nothing alone and something in twos, which is why a scattered ring underperforms a tight one. Two further facts: every district confers a minor bonus on nearby districts, including the City Center and the engineering districts, so clustering is never worthless; and ownership does not matter, so a Mine in a neighbour’s territory still feeds your Industrial Zone.
What each specialty district actually wants
Only six districts take adjacency bonuses: Campus, Theater Square, Commercial Hub, Harbor, Industrial Zone, Holy Site. Everything else — Encampment, Entertainment Complex, Aqueduct, Dam, Canal, Spaceport, Diplomatic Quarter — gives adjacency out and gets none back.
| District | Major (+2) | Standard (+1) | Minor (½) | Also |
|---|---|---|---|---|
| Campus | Geothermal Fissure, Reef, Pamukkale, Great Barrier Reef | Mountain | Rainforest, district tiles | — |
| Holy Site | Natural Wonder (Pamukkale also +1 in Gathering Storm) | Mountain | Woods, district tiles | +1 Appeal to neighbours |
| Theater Square | Entertainment Complex, Water Park, Pamukkale | Wonder (+2 with Rise and Fall) | District tiles | +1 Appeal to neighbours |
| Commercial Hub | Adjacent River; each adjacent Harbor | — | District tiles | +1 Trade Route if the city has no Harbor |
| Harbor | Adjacent City Center | Sea resource (not Shipwrecks) | District tiles | +1 Trade Route if the city has no Commercial Hub |
| Industrial Zone | Aqueduct, Dam, Canal (Gathering Storm) | Strategic resource, Quarry | District, Mine, Lumber Mill | −1 Appeal to neighbours |
The Industrial Zone changed shape between versions. In vanilla and Rise and Fall it takes a standard +1 per adjacent Mine or Quarry; Gathering Storm moved the major bonus onto the three engineering districts and demoted improvements to half-points. Advice written before February 2019 describes the older version.
Note what the Campus does not want: +1 per Mountain is standard, but Rainforest is minor, so a rainforest science city needs pairs. The wiki’s advice is 2–3 adjacent mountain tiles per Campus, “second only to those combined with a Geothermal Fissure in Gathering Storm.”
Tile-locking: why placement order costs production
District cost scales with progress through the trees: District Cost = [1 + 9 × max(T, C)] × base_cost, where T and C are the proportions of the technology and civics trees finished — up to ten times base price by the late game. Base cost is 54 Production for most specialty districts, 36 for the Aqueduct, 30 for the Government Plaza and Diplomatic Quarter, 81 for the Dam and Canal in Gathering Storm, 27 for most unique districts (the Roman Bath is 18). The Spaceport is 1800 and does not scale.
Then the rule that turns this into a discipline: “A district’s Production cost is locked in when it is placed, and will not change based on future discounting or tech-based scaling.”
Placement, not completion. The wiki is blunt about late cities: “it is highly important to place your districts the moment your city population and the relevant tech allows, or you risk wasting construction time unnecessarily.”
The discount system pushes the other way. Most specialty districts can be 40% off (25% for the Government Plaza and Diplomatic Quarter), provided your empire has completed at least as many specialty districts as it has unlocked types, and that type has fewer copies than the empire-wide average. The timing is fiddly: “C(T) is changed as soon as a district is placed,” while “the game only recalculates and updates discount eligibility when a Technology or Civic is completed or when a new city is acquired.”
That gives an order of operations:
- Finish a tech or civic, then read the district menu before placing anything. Eligibility refreshes on that event, not the turn you earned it.
- Place the expensive district you were always going to build. Its price locks at today’s scaling and it counts for future discount maths immediately.
- Never place a district as a placeholder to save the tile. It locks a price you then pay at that city’s rate, and raises that type’s count before a single hammer lands.
The population cap sets the pace: 1 district at 1 population, a second at 4, a third at 7, then one more per 3. Aqueducts, Neighborhoods and Spaceports ignore it — the Aqueduct “does not depend on Population” and can be built “without subtracting from your maximum district count.”
Which districts repay the hex they take
A district tile loses its native yields and is never worked, so ask what it pays back before it holds any buildings:
| District | Base cost | Adjacency you can guarantee | Worth the hex? |
|---|---|---|---|
| Harbor | 54 | +2 Gold from your own City Center, every time | Yes: guaranteed major bonus plus a Trade Route |
| Industrial Zone | 54 | +2 Production per adjacent Aqueduct, Dam or Canal | Yes: the Aqueduct side ignores the population cap |
| Commercial Hub | 54 | +2 Gold if you have river frontage to spare | Yes, but a terrain bet; Harbor wins on the coast |
| Campus | 54 | +1 per Mountain | Yes: mountains are common and worth a standard bonus each |
| Holy Site | 54 | +1 per Mountain, +2 per Natural Wonder | Conditional; without a wonder it is a mountain district |
| Theater Square | 54 | +1 per Wonder (+2 with Rise and Fall) | Not early: it needs wonders you have not built |
| Government Plaza | 30 | None; it gives +1 to everything adjacent instead | Yes, once, where the cluster will be |
| Aqueduct | 36 | 2–4 Housing, plus the Industrial Zone’s +2 | Yes: cheapest adjacency in the game per the wiki’s maths |
The Aqueduct’s contribution is not on its own tile at all; it is the major bonus it hands the Industrial Zone next door. The wiki works the return: “They immediately provide 2 extra Production, another 2 Production on top of that once you construct a Coal Power Plant, followed by yet another 4 Production with the Craftsmen or Five-Year Plan policy cards.” A 36-cost district that also carries Housing and ignores the population cap is the best value on the board.
The Preserve proves the direction of the mechanic. It “is unique in a sense that instead of gaining adjacency bonuses from surrounding tiles, unimproved surrounding tiles benefit from being adjacent to the Preserve.” It takes a hex and pays nothing itself beyond up to 3 Housing from tile Appeal and +1 Appeal to neighbours. Build it for a National Park, not for adjacency income.
Unique districts that rewrite the rule
| Civ | District | What changes |
|---|---|---|
| Japan | any | Meiji Restoration: “Districts receive a +1 adjacency bonus for each adjacent district, instead of +0.5” — every district becomes a standard source for its neighbours |
| Germany | Hansa (Industrial Zone) | 27 cost; major +2 per adjacent Commercial Hub, standard +1 per adjacent resource: production from commerce |
| Korea | Seowon (Campus) | 27 cost and a flat +4 Science, but −1 Science per adjacent district, and it must sit on Hills |
| Mali | Suguba (Commercial Hub) | 27 cost; major +2 for an adjacent River or Holy Site, plus 20% off Gold and Faith purchases |
| Russia | Lavra (Holy Site) | 27 cost, Holy Site adjacency, plus +2 Great Prophet points per turn |
Japan is the reason to internalise the rounding. Per the wiki, a Campus touching three districts gains only +1 under normal rules because each half-point rounds down, where the same Japanese Campus takes +3. Korea is the mirror image: the cluster-everything instinct actively damages your science, so Korean cities want that Campus alone on a hill.
City layouts worth settling for
Four footprints, on three constraints: districts must sit within 3 tiles of the City Center, they cannot be placed adjacent to another city’s City Center, and every placement is also a land claim.
The Aqueduct spine. Settle so a tile adjacent to the City Center also touches fresh water, then run Aqueduct → Industrial Zone → Dam along the same river. The Aqueduct must touch the City Center and a River, Lake, Oasis or Mountain on an edge not directly between the two; the Industrial Zone takes +2 from it and another +2 from the Dam on its far side. Best three-hex production line in the game, and it works in any city with fresh water.
The river-mouth triangle. City Center, Harbor, Commercial Hub in a triangle. The Harbor takes its major +2 from the City Center, the Commercial Hub a major +2 from the Harbor; a river past the Commercial Hub adds another. In cities without river frontage build the Harbor instead: it only needs Coast or Lake adjacent to land.
The mountain wall. Two to three Mountains in the first ring, Campus on the flat side, Holy Site beside it. Both take +1 per Mountain and both are doubled by policy cards later. Build the Encampment elsewhere; it cannot sit next to the City Center, and neither can a Preserve.
The Government Plaza core. One per civilisation, 30 Production, and +1 to every adjacent district. Place it where it will touch four or more of your capital’s future districts, then build outward. Its +8 Loyalty is wasted in a capital: the reason some players put it in a border city.
Two placement details: hidden strategic resources “do not block placement of districts”, and one revealed under an existing district is still granted to you. Bonus resources can be harvested for space too.
The four cards that double the sum
| Card | Doubles | Unlocked by |
|---|---|---|
| Natural Philosophy | Campus adjacency | Recorded History civic |
| Scripture | Holy Site adjacency | Theology civic |
| Town Charters | Commercial Hub adjacency | Guilds civic |
| Craftsmen | Industrial Zone adjacency | Guilds civic (a Military card in Gathering Storm) |
Each gives +100%. The wiki’s illustration is arithmetic: “a Campus with a bonus of +1 will gain another +1 from this policy (for a total of +2), while a Campus with a +3 bonus will reach a total of +6.” A +3 Campus is not six times a +1 Campus — it is three times before the policy and still three times after it. What the policy changes is the absolute swing, not the ratio. That compounding is why the placement you commit to on turn 20 outweighs any single building.
What this guide does not settle
Honest gaps, and the first one is bigger than it first looks. Seven updates — November 2022 through July 2024, including September 2023, November 2023 and July 2024 — are marked undocumented on the wiki’s update log, so “no adjacency changes” rests on the notes that do exist; the July 2024 entry lists only a challenge-menu and a credits update. The rounding advice is the wiki’s two worked examples; its per-feature wording does not reconcile with a naive per-tile sum, so I quote rather than derive. And the wiki reports the Preserve “is currently bugged” — it counts toward discounts but cannot itself be discounted — which I could not verify.
What is confirmed is the version: 1.0.12.68, 15 July 2024, all expansions and the Leader Pass in.