8308 Illnau (Illnau-Effretikon): key figures
8308 Illnau (postcode area in Illnau-Effretikon) has 4,846 residents in 2025 across 11.0 km², or 442 people per km². By population, 8308 Illnau ranks No. 2 of 3 postcode areas in Illnau-Effretikon. Population: +7.2% between 2015 and 2025.
- 4,846 residents
- 11.0 km²
- 442 people/km²
8308 Illnau in numbers
Key points
By population, 8308 Illnau ranks No. 2 of 3 postcode areas in Illnau-Effretikon.
Nationally, 8308 Illnau ranks No. 474 of 2,275 postcode areas.
Population of 8308 Illnau over time
8308 Illnau had 4,520 residents in 2015 and 4,846 in 2025.
| Year | Population |
|---|---|
| 2015 | 4,520 |
| 2020 | 4,622 |
| 2023 | 4,722 |
| 2025 | 4,846 |
All indicators for 8308 Illnau
Next to the value for 8308 Illnau: all postcode areas of Illnau-Effretikon, then of the whole country (totals for counts, weighted averages for rates).
Housing
| Indicator | 8308 Illnau | Illnau-Effretikon | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Dwellings (2026) | 2,203 | – | – | ranked 2 of 3 | ranked 549 of 3,164 | |
| Residential buildings (2026) | 1,025 | – | – | ranked 2 of 3 | ranked 431 of 3,160 | |
| Dwellings in buildings built before 1946 (2026) | 18.4% | 13.3% | 23.2% | ranked 2 of 3 | ranked 2,268 of 3,164 | |
| Dwellings in buildings built since 2001 (2026) | 36.9% | 20.5% | 23.6% | ranked 1 of 3 | ranked 368 of 3,164 | |
| Share of detached houses among residential buildings (2026) | 73.0% | 63.6% | 63.5% | ranked 2 of 3 | ranked 1,249 of 3,160 |
Energy
| Indicator | 8308 Illnau | Illnau-Effretikon | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Oil or gas heating systems (2026) | 40.5% | 52.6% | 56.2% | ranked 2 of 3 | ranked 2,060 of 3,160 | |
| Heat pumps as main heating (2026) | 38.8% | 34.5% | 16.2% | ranked 2 of 3 | ranked 165 of 3,160 | |
| Wood heating systems (2026) | 14.1% | 8.8% | 13.5% | ranked 1 of 3 | ranked 1,729 of 3,160 | |
| District heating (2026) | 4.1% | 1.6% | 5.6% | ranked 1 of 3 | ranked 783 of 3,160 |
Society
| Indicator | 8308 Illnau | Illnau-Effretikon | Switzerland | Position? | Rank in the area | Rank in the country |
|---|---|---|---|---|---|---|
| Share of foreign nationals (2025) | 20.0% | 30.4% | 29.8% | ranked 2 of 3 | ranked 1,109 of 2,040 |
Where is 8308 Illnau?
Other postcode areas in Illnau-Effretikon
Postcode areas near 8308 Illnau
- 8307 Effretikon12,735 residents
- 8314 Kyburg373 residents
- 8605 GutenswilVolketswil
- 8320 FehraltorfFehraltorf
- 8604 VolketswilVolketswil
- 8484 WeisslingenWeisslingen
Previous in alphabetical order: 8307 Effretikon
Next in alphabetical order: 8314 Kyburg
Frequently asked questions
What is the population of 8308 Illnau (Illnau-Effretikon)?
8308 Illnau has 4,846 residents in 2025. It covers 11.0 km², or 442 people per km².
Where is 8308 Illnau?
8308 Illnau (postcode area) is part of Illnau-Effretikon, in Zurich.
What is the value of “Share of foreign nationals” in 8308 Illnau?
Share of foreign nationals: 20.0% (2025), ranked 1,109 of 2,040 postcode areas in the country.
What is the value of “Dwellings” in 8308 Illnau?
Dwellings: 2,203 (2026), ranked 549 of 3,164 postcode areas in the country.