# Diamond Harbour vs Lyttelton, the record side by side

| | [Diamond Harbour](https://www.chch.live/diamond-harbour) | [Lyttelton](https://www.chch.live/lyttelton) |
|---|---|---|
| Population | 1,610 (2023) | **3,220 (June 2025)** |
| 2023 Census (SA1 join) | 1,536 (indicative) | **3,117 (indicative)** |
| Census households | 693 | **1,353** |
| Under 15 (Census) | — | 15% |
| 65+ (Census) | — | 17% |
| Area | 3.02 km² | **6.27 km²** |
| People per km² | **533** | 514 |
| Reports filed | 1,752 | **5,530** |
| Rank on the roll | 67th of 108 | **23rd of 108** |
| Reports per km² | 580 | **882** |
| First report on record | 2015 | 2015 |
| Busiest day | 2022-12-04 (10 reports) | **2026-01-07 (72 reports)** |
| Crashes on record | 27 (0 fatal · 8 serious) | **77 (2 fatal · 22 serious)** |
| Epicentres inside the outline | 1 (biggest M3.4) | **28 (biggest M4.1)** |
| Of the outline, red-zoned | — | 1.8% (11 ha) |
| The 2011 grade | — | — |
| Flooded on record | — | 1.0% (1 event) |
| The sea’s reach | 1% of the outline | **13% of the outline** |
| Slope-hazard bands | 0% of the outline (+97% broad overlay) | **26% of the outline (+57% broad overlay)** |
| The remembered ground | **100% of the outline** | 85% of the outline |
| The wild ledger | — | — |
| The kept view | 23% of the outline (+3% outstanding) | **42% of the outline (+24% outstanding)** |
| The waiting water | — | — |
| The quiet lines | — | — |
| The drawn water | 38 reaches (Purau Stream, Church Gully Stream), 4% setback strips | **14 reaches, 4% setback strips, held edge** |
| The allowed shape | 0% under density overlays | 0% under density overlays |
| The rebuild’s receipts | 202 frames filed (2012–2014) | **2,646 frames filed (2010–2017)** |
| The pedal network | — | — |
| The remembered names | 11 plaques, Diamond Harbour Cemetery, Stoddart Point Reserve | **20 plaques, Sumner Road Gardens, Oxford Street Reserve** |
| The rules on the ground | 15 drawn rules, Rapaki Runanga | **18 drawn rules, Rapaki Runanga** |
| On the hazard register | — | 10 parcels (9 current) |
| Made ground on file | 36 parcels (all vouched or natural) | 13 parcels (3 unvouched) |
| Surveyed rocks | 123 rocks (24 fell, 16 wobble easy) | 1,023 rocks (612 fell, 48 wobble easy) |
| Cleanups on file | 2 parcels (none verified) | 1 parcel (none verified) |
| The model’s verdict | — | unlikely (1% of the outline) |
| Engineered defences | — | 45 defences (4 rated poor) |
| The canopy | **624 trees (91 veterans, 72 remembered felled)** | 179 trees (5 veterans, 51 remembered felled) |
| The plan’s word | Residential Banks Peninsula (41% of the outline, 61% residential) | Open Space Natural (27% of the outline, 15% residential) |
| The plan’s reservations | — | 4% of the outline (5 designations, movement, pipes) |
| The plan’s exceptions | — | 1% of the outline (1 matter, heritage) |
| The listed city | 1 scheduled item (1 highly significant) | **74 scheduled items (15 highly significant)** |
| The usual complaints | Roading/Streets (319), Water Leak (196), Parks (184) | Graffiti (1,256), Water Leak (651), Roading/Streets (588) |
| Schools | 1 | 1 |
| Parks | **19** | 16 |
| Facilities | 3 | **4** |
| Tracks | 0 | **2** |
| Bus stops | — | 11 |
| Bus routes through | — | 3 |
| Heritage places | 9 | **75** |

Same record, same caveats, the stream counts reports, not virtue.

## Questions, answered briefly

**What is the difference between Diamond Harbour and Lyttelton?**

Diamond Harbour counts 1,610 people (2023) to Lyttelton's 3,220; Diamond Harbour covers 3.02 km², Lyttelton 6.27 km²; the record holds 1,752 reports for Diamond Harbour and 5,530 for Lyttelton.

**Which has more heritage places, Diamond Harbour or Lyttelton?**

Lyttelton, 75 on the heritage register to the other’s 9.

**Where do these numbers come from?**

The same public record for both, council reports, the crash register, the heritage schedule, Stats NZ’s counts. The stream counts reports, not virtue; the caveats are each suburb’s own.

HTML: https://www.chch.live/compare?a=diamond-harbour&b=lyttelton
Data: https://api.chch.live/suburb?slug=diamond-harbour · https://api.chch.live/suburb?slug=lyttelton