# Avonhead vs Ilam, the record side by side

| | [Avonhead](https://www.chch.live/avonhead) | [Ilam](https://www.chch.live/ilam) |
|---|---|---|
| Population | 10,650 (2023) | **10,730 (2023)** |
| 2023 Census (SA1 join) | **12,264 (indicative)** | 10,224 (indicative) |
| Census households | **4,422** | 2,673 |
| Under 15 (Census) | **17%** | 10% |
| 65+ (Census) | **20%** | 10% |
| Area | **5.16 km²** | 3.85 km² |
| People per km² | 2,064 | **2,787** |
| Reports filed | 5,284 | **5,640** |
| Rank on the roll | 24th of 108 | **22nd of 108** |
| Reports per km² | 1,024 | **1,465** |
| First report on record | 2015 | 2015 |
| Busiest day | 2023-12-22 (19 reports) | **2023-11-25 (23 reports)** |
| Crashes on record | 205 (2 fatal · 50 serious) | **313 (2 fatal · 45 serious)** |
| Epicentres inside the outline | — | 1 (biggest M3.1) |
| Of the outline, red-zoned | — | — |
| The 2011 grade | TC1 (249.6% of the outline) | — |
| Flooded on record | — | 0.3% (1 event) |
| The sea’s reach | — | — |
| Slope-hazard bands | — | — |
| The remembered ground | — | — |
| The wild ledger | — | 1% of the outline |
| The kept view | — | 1% of the outline |
| The waiting water | 0% high-hazard (1% managed) | 0% high-hazard (20% managed) |
| The quiet lines | all of the outline (43% under the airport’s contours), bird-strike buffer | all of the outline (44% under the airport’s contours), bird-strike buffer |
| The drawn water | 52 reaches (Ilam Stream, Avon River), 1% setback strips | **102 reaches (Waimairi Stream, Avon River), 3% setback strips** |
| The allowed shape | 3% under density overlays, Suburban | **18% under density overlays, Suburban Density Transition** |
| The rebuild’s receipts | **1,514 frames filed (2011–2016)** | 1,304 frames filed (2010–2014) |
| The pedal network | 0.0 km inside the outline | **0.0 km inside the outline (0.0 km separated), Nor'West Arc, Uni-Cycle** |
| The remembered names | 10 plaques, Avonhead Cemetery, Base Line Survey Monument | — |
| The rules on the ground | 6 drawn rules, Te Ngai Tuahuriri Runanga | **13 drawn rules, Te Ngai Tuahuriri Runanga** |
| On the hazard register | 1 parcel (none current) | **6 parcels (3 current)** |
| Made ground on file | 135 parcels (1 unvouched) | 107 parcels (all vouched or natural) |
| Surveyed rocks | — | — |
| Cleanups on file | 1 parcel (none verified) | 1 parcel (none verified) |
| The model’s verdict | low (91% of the outline) | possible (56% of the outline) |
| Engineered defences | — | — |
| The canopy | **4,771 trees (16 veterans, 2,811 remembered felled)** | 2,437 trees (42 veterans, 1,206 remembered felled) |
| The plan’s word | Residential Suburban (44% of the outline, 47% residential) | Residential Suburban (40% of the outline, 58% residential) |
| The plan’s reservations | **10% of the outline (7 designations, movement, learning)** | 3% of the outline (3 designations, learning) |
| The plan’s exceptions | 3% of the outline (5 matters, utilities) | **30% of the outline (15 matters, utilities, heritage)** |
| The listed city | 1 scheduled item (none top-graded) | **16 scheduled items (10 highly significant)** |
| The usual complaints | Water Leak (584), Dumped Rubbish (550), Parks (491) | Roading/Streets (763), Dumped Rubbish (662), Graffiti (588) |
| Schools | 3 | 3 |
| Parks | **20** | 7 |
| Facilities | **1** | 0 |
| Tracks | 2 | **30** |
| Bus stops | **42** | 38 |
| Bus routes through | 5 | **7** |
| Heritage places | 1 | **15** |

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

## Questions, answered briefly

**What is the difference between Avonhead and Ilam?**

Avonhead counts 10,650 people (2023) to Ilam's 10,730; Avonhead covers 5.16 km², Ilam 3.85 km²; the record holds 5,284 reports for Avonhead and 5,640 for Ilam.

**Which has more heritage places, Avonhead or Ilam?**

Ilam, 15 on the heritage register to the other’s 1.

**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=avonhead&b=ilam
Data: https://api.chch.live/suburb?slug=avonhead · https://api.chch.live/suburb?slug=ilam