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Duszczak mieszka w:
| Poznań | 52 |
| Środa Wielkopolska | 41 |
| Kórnik | 30 |
| Brodnica | 13 |
| Legnica | 13 |
| Prusinowo | 13 |
| Lubanie | 11 |
| Pleszew | 11 |
| Trzek | 11 |
| Zielona Góra | 11 |
| Lubniewice | 10 |
| Toruń | 10 |
| Gliśnica | 9 |
| Jeziory Wielkie | 9 |
| Łękno | 9 |
| Marianowo Brodowskie | 9 |
| Pętkowo | 9 |
| Rusibórz | 9 |
| Zielonagóra | 9 |
| Annopole | 8 |
| Konin | 8 |
| Śnieciska | 8 |
| Mikanowo | 7 |
| Bożydar | 6 |
| Brodowo | 6 |
| Gorzyce | 6 |
| Jasień | 6 |
| Krzywa Góra | 6 |
| Luboniec | 6 |
| Łódź | 6 |
| Osiek nad Notecią | 6 |
| Robakowo | 6 |
| Śrem | 6 |
| Zieliniec | 6 |
| Bytom | 5 |
| Garby | 5 |
| Gostyń | 5 |
| Kostrzyn | 5 |
| Miłosław | 5 |
| Mysłowice | 5 |
| Paczkowo | 5 |
| Pelplin | 5 |
| Puszczykowo | 5 |
| Bydgoszcz | 4 |
| Gdynia | 4 |
| Głuszyca | 4 |
| Goleniów | 4 |
| Kalisz | 4 |
| Katowice | 4 |
| Międzyrzecz | 4 |
| Nowy Tomyśl | 4 |
| Olsztyn | 4 |
| Lubsko | 3 |
| Łęczyca | 2 |
| Broniszewice | 1 |
| Luciny | 1 |
| Ługowiny | 1 |
| Nowieczek | 1 |
| Ostrowieczno | 1 |
| Psarskie | 1 |
| Żmigród | 1 |
