Trefcon
| Trefcon | |
| — Commune — | |
 Trefcon ê kéng-sek
|
|
  Trefcon |
|
| Keng-hūi-tō͘: 49°51′28″N 3°5′43″E / 49.85778°N 3.09528°E | |
| Kok-ka |  Hoat-kok
|
|---|---|
| Toā-khu | Picardie |
| Koān | Aisne |
| Kūn | |
Trefcon sī ūi-tī Hoat-kok Picardie tōa-khu Aisne séng ê chi̍t-ê commune.
Tē-lí
[siu-kái | kái goân-sí-bé]Tī Trefcon ê sì-ûi ū Beauvois-en-Vermandois, Caulaincourt, Poeuilly, Tertry, kap Vraignes-en-Vermandois téng siâⁿ-chhī he̍k-chiá chng-siā.
Jîn-kháu
[siu-kái | kái goân-sí-bé]| Nî-tō͘ | 1968 | 1975 | 1982 | 1990 | 1999 | 2007 | 2012 |
|---|---|---|---|---|---|---|---|
| Jîn-kháu | 94 | 86 | 87 | 83 | 95 | 82 | 89 |
| Bi̍t-tō͘ (jîn-kháu/km²) | 23.4 | 21.4 | 21.6 | 20.6 | 23.6 | 20.4 | 22.1 |
Chham-khó
[siu-kái | kái goân-sí-bé]- "Commune de Trefcon (02747) - Dossier complet". INSEE. 2016-05-08 khòaⁿ--ê.
