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Postal code 05-190 – Nasielsk

Nasielsk, Nasielsk municipality, nowodworski county, mazowieckie voivodeship

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Code 05-190:
localities
64
streets
170
buildings
2,999

Postal code 05-190 is used in 64 localities, including Nasielsk, Cieksyn, Borkowo, Nowe Pieścirogi, Stare Pieścirogi (Nasielsk municipality, nowodworski county, mazowieckie voivodeship). It covers 2999 buildings on 170 streets – the full list with house numbers is below.

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Location
64 localities
Nasielsk municipality · nowodworski county
mazowieckie voivodeship

Which streets have postal code 05-190?

ul. 11 Listopada · NasielskNumbers: 3, 5–6, 8–10, 16ul. Anny Jagiellonki · NasielskNumbers: 1–25, 27, 33ul. Armii Krajowej · NasielskNumbers: 1, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 34A, 36ul. Bajkowa · NasielskNumbers: 2, 4–6, 8, 10, 12ul. Bolesława Chrobrego · NasielskNumbers: 1–17ul. Broninek · NasielskNumbers: 1–2, 2A, 2B, 3–5, 7, 7A, 9, 11–12, 14, 14A, 16, 17B, 18, 18A, 19, 21, 32, 34, 38, 40, 40Aul. Brzozowa · NasielskNumbers: 1, 1B, 3B, 3D, 3E, 4, 5A, 5B, 5C, 6, 8, 11A, 11B, 14, 16, 18, 18C, 20A, 20B, 20C, 20D, 22–23, 26ul. Chmielna · NasielskNumbers: 6, 8, 12, 20ul. Cicha · NasielskNumbers: 4, 6, 8ul. Cisowa · NasielskNumbers: 5–8, 11, 13–14, 16, 18, 20, 22–24ul. Cmentarna · NasielskNumbers: 1, 1A, 3, 5, 7, 9, 11/13, 14–17, 20B, 20aul. Cytrusowa · NasielskNumbers: 3, 5, 9ul. Czereśniowa · NasielskNumbers: 1–9, 9A, 10–22, 24, 26, 28, 30ul. Dąbrówki · NasielskNumbers: 7, 10, 12, 14–18ul. Dębowa · NasielskNumbers: 1–3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 27ul. Dolna · NasielskNumbers: 5, 8, 10–11, 15, 19ul. Działkowa · NasielskNumbers: 1, 3–6ul. Elektronowa · NasielskNumbers: 1–3, 3A-3D, 3E, 3G, 3H, 5, 7, 8/10, 9, 11–12, 14, 18, 20, 22ul. Figowa · NasielskNumbers: 3–4, 6ul. Folwark · NasielskNumbers: 1–6, 8–10, 10A, 10B, 11, 11A, 12–14, 16–17, 19ul. Gajowa · NasielskNumbers: 2–5, 7ul. Garbarska · NasielskNumbers: 1, 2/4, 3, 5, 6-10, 7, 9, 12–13, 15Gen. Aleksandra Osińskiego · NasielskNumbers: 1, 3, 5–16, 18–21, 23–25Gen. Władysława Andersa · NasielskNumbers: 5, 7, 11ul. Generała Józefa Bema · NasielskNumbers: 1–12, 14, 16, 18ul. Grabowa · NasielskNumbers: 7–13, 16–18, 20–22, 24, 26–28, 30–31ul. Graniczna · NasielskNumbers: 9, 13–16, 16A, 20, 20A, 20B, 26, 28–30, 32ul. Gwiaździsta · NasielskNumbers: 1–4, 6–8, 10ul. Henryka Dąbrowskiego · NasielskNumbers: 2–8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 26A, 28ul. Jadwigi Rostkowskiej · NasielskNumbers: 3, 7–9, 11, 15, 19ul. Jagodowa · NasielskNumbers: 1–11ul. Jaśminowa · NasielskNumbers: 2, 4, 6, 8, 10, 12, 14ul. Jasna · NasielskNumbers: 14ul. Jaworowa · NasielskNumbers: 3, 5, 7–9, 14, 14A, 14Bul. Jesionowa · NasielskNumbers: 2, 8–10, 14, 16ul. Juliana Tuwima · NasielskNumbers: 2, 2A, 4, 6, 8–9, 9A, 11, 11A, 11B, 12ul. Kardynała Stefana Wyszyńskiego · NasielskNumbers: 1, 5, 7, 9, 11, 11A, 15, 15A, 17, 17A, 19, 21ul. Kazimierza Wielkiego · NasielskNumbers: 1–5, 7–12, 14–15, 17ul. Kilińskiego · NasielskNumbers: 1/3, 2, 4–11, 13–14, 14A, 15–22, 22A, 23–25, 27, 29A, 29B, 31, 33ul. Klonowa · NasielskNumbers: 1–24, 26, 26Aul. Kokosowa · NasielskNumbers: 2–5, 8, 10ul. Kolejowa · NasielskNumbers: 2, 2A, 4, 6, 8, 10, 12, 14, 18–19, 19A, 20, 27, 27A, 38, 43, 48, 50, 54, 60, 60A, 74, 74A, 74B, 76, 78, 80, 82, 84A, 84B, 84Cul. Komunalna · NasielskNumbers: 23ul. Kościelna · NasielskNumbers: 1–4, 5A, 5B, 6, 8–9, 11–16, 16A, 17, 18A, 18B, 19–20, 20A, 21–22, 24ul. Kozia · NasielskNumbers: 2–8ul. Krańcowa · NasielskNumbers: 49, 51, 51A, 53, 55, 57, 57A, 59, 59A, 61, 65, 65B, 65C, 71, 71Aul. Kręta · NasielskNumbers: 9, 11, 13, 15ul. Królowej Jadwigi · NasielskNumbers: 1–3, 6–7, 12ul. Krótka · NasielskNumbers: 6ul. Krupki · NasielskNumbers: 1, 3–4, 4A, 5, 7–10, 10B, 10a, 11–12, 13/15, 13A, 13B, 17, 19, 21, 23, 25, 28, 30–31, 46, 50ul. Księcia Józefa Poniatowskiego · NasielskNumbers: 1–5, 5A, 6–7, 9, 11, 13, 15, 17B, 19, 21, 23, 23A, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43ul. Kwiatowa · NasielskNumbers: 2–3, 4A, 8, 19, 19A, 21A, 21B, 23, 28, 30, 32ul. Łączna · NasielskNumbers: 5, 10, 15, 15A, 15B, 15C, 15D, 15E, 15F, 15Gul. Łąkowa · NasielskNumbers: 11Aul. Lazurowa · NasielskNumbers: 4, 6, 8, 10, 12, 15ul. Leśna · NasielskNumbers: 1–9, 11, 13–14, 14A, 15, 16A, 16B, 17, 18A, 18B, 19, 20A, 20B, 21, 22A, 22B, 23, 24A, 24B, 24C, 25–26, 26A, 26B, 27A, 27B, 28, 29A, 29B, 30–34, 34A, 34B, 34C, 34D, 35, 37, 37A, 38, 38A, 38B, 39, 39Aul. Lipowa · NasielskNumbers: 1–3, 3A, 4–13, 13A, 15ul. Ludwika Waryńskiego · NasielskNumbers: 2, 4, 6, 6A, 6B, 7–15ul. Mała · NasielskNumbers: 1–12, 14, 16ul. Malinowa · NasielskNumbers: 1–10, 12, 12A, 14, 16, 18a, 18b, 25ul. Marszałka Józefa Piłsudskiego · NasielskNumbers: 1–11, 12/16, 12/16A, 12/16B, 12/16C, 12/16D, 12/16E, 13, 15, 15A, 17–18, 18a, 19–24, 24A, 25–38, 38A, 39, 40D, 41–42, 42A, 43–47, 47a, 48, 48A, 49, 51–53, 55, 57, 59, 61, 63, 67, 67B, 67a, 77ul. Mieszka I · NasielskNumbers: 1–11ul. Miętowa · NasielskNumbers: 5ul. Miodowa · NasielskNumbers: 6, 8, 10, 14ul. Młynarska · NasielskNumbers: 1, 3–13, 15–19, 21–24, 24A, 25–37, 37A, 38, 39A, 39B, 39C, 40, 42–45, 45f, 46–47, 49, 51–52, 52A, 54, 55A, 55B, 56, 58, 61–62, 62C, 62D, 62a, 63, 63A, 63C, 63D, 65b, 65e, 66–67, 68B, 74A, 74D, 74E, 74c, 74f, 78ul. Nowa · NasielskNumbers: 4–5, 7–10ul. Nowa Wieś · NasielskNumbers: 1–2, 4–9, 9A, 10–11, 11A, 12–14, 16–20, 22–28, 30–34, 36–37, 39–40, 40A, 41–42, 42A, 43, 43A, 44–47, 47A, 47B, 47C, 49ul. Ogrodowa · NasielskNumbers: 1–3, 3A, 4, 5B, 5C, 5D, 8, 8a, 9, 11–12, 12C, 12F, 12G, 12H, 12i, 13, 14A, 14B, 14D, 14E, 14G, 14H, 14J, 14K, 15, 15A, 15B, 15C, 15D, 15E, 15F, 16–18ul. Oliwkowa · NasielskNumbers: 2–5, 7, 12, 16ul. Orzechowa · NasielskNumbers: 6, 8, 10ul. Owocowa · NasielskNumbers: 4, 6, 8, 10, 12, 14, 16, 18, 20ul. Piaskowa · NasielskNumbers: 1–3, 3A, 4–9, 9A, 10–11, 11A, 12–13, 13A, 14–16, 16A, 16B, 17, 19–20, 22, 22A, 24/26, 28, 30, 32, 36, 36A, 38, 40, 40A, 42, 44, 52, 52/54ul. Płońska · NasielskNumbers: 1, 3–4, 4A, 4C, 5–6, 6a, 7, 9, 11–13, 15, 17–18, 20–21, 23, 23A, 24A, 24B, 24C, 24D, 25–27, 29, 31, 33, 35, 37, 39, 43, 45, 55/57ul. Pniewska Górka · NasielskNumbers: 7, 11, 13–14, 15A, 15B, 15C, 17, 17A, 18, 19A, 19B, 19C, 21, 22A, 23, 25, 27–28, 29b, 31, 33, 45, 47, 49, 55, 65, 67, 73, 75, 77, 81, 83, 85, 95, 99, 107, 109, 111, 113, 115ul. Podmiejska · NasielskNumbers: 1–7, 7A, 8, 8A, 9A, 9B, 10–11, 13, 15ul. Polna · NasielskNumbers: 1, 2A, 3–6, 6A, 6B, 6C, 7–9, 9A, 9B, 11, 13–16, 16A, 17–18, 20, 20A, 22, 22A, 22C, 22D, 24, 26, 36, 38, 40A, 42ul. Polskiej Organizacji Wojskowej · NasielskNumbers: 1–3, 3A, 3C, 3E, 4–10, 10A, 11–13, 15A, 15B, 16/18, 17, 17A, 19A, 19B, 20–23, 24A, 24B, 25–28, 30–32, 36, 44, 46, 48, 50, 52, 52A, 53, 53A, 54–59, 60/62, 63–64, 68, 69/71, 70–72, 74–75, 76B, 77–79, 79C, 80, 82–83, 83A, 84, 84A, 86, 90–91, 93/95, 93/95A, 97/99, 98, 100–104, 106, 106A, 106B, 107, 107A, 107B, 107C, 107D, 107E, 107F, 107G, 108, 110, 114, 116, 116A, 120, 122–123, 125–126, 127/129, 128, 130, 133, 139–140, 142, 144, 146, 152, 160, 162, 164ul. Prosta · NasielskNumbers: 4, 6, 9–10, 13, 15ul. Przemysłowa · NasielskNumbers: 1, 10, 15, 17, 19, 21, 23, 25, 27, 31, 42, 46, 50Rynek · NasielskNumbers: 1–4, 4A, 6, 6A, 7–18, 19/20, 19/20A, 21–22, 22a, 23–25, 27–37ul. Sezamkowa · NasielskNumbers: 1, 3ul. Ślepa · NasielskNumbers: 1–4, 6, 8, 10, 12, 14, 14A, 16ul. Słoneczna · NasielskNumbers: 28, 28A, 28B, 28C, 32–34, 34A, 36, 36A, 36B, 37–42, 42A, 42AB, 42B, 42E, 42F, 42G, 42H, 42L, 42M, 42W, 42Y, 42Z, 43–44, 44A, 44B, 44C, 44D, 44E, 44F, 44H, 44J, 44K, 44L, 44N, 44P, 44Ł, 47ul. Sosnowa · NasielskNumbers: 1A, 1D, 1E, 1G, 1H, 1J, 1M, 2–3, 5–7, 7a, 10, 14, 16, 18, 20, 22, 24, 28, 32ul. Spokojna · NasielskNumbers: 10ul. Sportowa · NasielskNumbers: 1–3, 4A, 4B, 4C, 5–10, 10A, 10B, 11, 12A, 12B, 13–15, 15A, 16–17, 19, 21, 23, 25, 27, 29ul. Starzyńskiego · NasielskNumbers: 1–4, 4A, 4B, 4C, 4D, 5–9, 11ul. Staszica · NasielskNumbers: 1, 1A, 1B, 1C, 1D, 1e, 3, 7ul. Stefana Batorego · NasielskNumbers: 9ul. Świerkowa · NasielskNumbers: 1, 1A, 2–4, 5A, 5B, 6–7, 9–15, 17ul. Świętego Wojciecha · NasielskNumbers: 1–5, 5a, 6, 6a, 7, 9, 11, 13ul. Szkolna · NasielskNumbers: 1–2, 2A, 4, 6, 8ul. Tadeusza Kościuszki · NasielskNumbers: 1–4, 5A, 5B, 6–13, 15, 17–21, 22/24, 23, 25–30, 31A, 31B, 31C, 31D, 31E, 32, 33A, 33B, 33C, 33D, 34, 34A, 36–38, 38A, 39–41, 45–48, 48A, 50, 52, 54, 54A, 55–58, 60–62, 64, 66–70, 72, 74, 76, 78, 78A, 78B, 80, 82, 82A, 84, 84A, 86, 88, 90, 92, 94, 96, 96A, 98, 100, 102, 104, 106, 108, 110, 112, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140ul. Tęczowa · NasielskNumbers: 4, 15, 17, 37, 39ul. Topolowa · NasielskNumbers: 1, 1A, 2–3, 3B, 3C, 3a, 4, 8–9, 11, 12A, 16–19, 19A, 21A, 23, 25, 27, 34B, 34D, 34E, 34F, 34H, 35, 35A, 35B, 36C, 36E, 36K, 42, 42B, 42Cul. Traugutta · NasielskNumbers: 1, 1A, 2–23, 25–29, 31, 33, 35, 37, 39ul. Tylna · NasielskNumbers: 1ul. Wacława Sokolnickiego · NasielskNumbers: 3, 8, 10ul. Waniliowa · NasielskNumbers: 4, 19ul. Warszawska · NasielskNumbers: 1–7, 7A, 8–12, 12A, 13–14, 14A, 15–16, 16A, 17-21, 18, 18A, 20, 20A, 22–30, 32–33, 35–38, 38A, 38B, 38C, 39, 39A, 40, 41/49A, 41/49B, 41/49C, 41/49D, 41/49E, 41/49F, 41/49G, 41/49H, 41/49J, 42, 44, 44A, 46, 46A, 48, 50, 51/53A, 51/53B, 51/53C, 51/53D, 52, 52A, 52B, 54–55, 55A, 56, 56A, 57, 57A, 58, 58A, 59–60, 60A, 60B, 60C, 61, 61B, 62A, 62B, 63–64, 66, 67/69, 68, 68B, 70, 71/73, 72, 76, 78–80, 80A, 81, 82A, 82B, 84–94, 94A, 95/97, 99–104, 104A, 105, 105A, 106, 107/109, 108, 108a, 110, 111/113, 114–115, 122, 128ul. Wąska · NasielskNumbers: 1–4, 6, 8ul. Wiejska · NasielskNumbers: 1, 3–6, 6A, 7–8, 8a, 9–10, 10A, 10B, 11–15, 17, 19, 21, 23, 25, 27, 29ul. Wielokwiatowa · NasielskNumbers: 2, 4–8, 9/11, 15–17ul. Wierzbowa · NasielskNumbers: 1, 5–6, 9, 11, 11A, 11Bul. Wiśniowa · NasielskNumbers: 1–12, 12A, 13–14, 14A, 15–21, 23, 25, 27ul. Władysława Broniewskiego · NasielskNumbers: 1, 1A, 2, 3B, 3C, 3D, 3E, 4–12, 14–16, 18, 20, 22, 24, 26, 30ul. Władysława Jagiełły · NasielskNumbers: 1–24ul. Władysława Łokietka · NasielskNumbers: 1, 3–9, 11ul. Wspólna · NasielskNumbers: 3, 7ul. Żwirki i Wigury · NasielskNumbers: 1–6, 8, 10, 12, 14ul. Sadowa · NasielskNumbers: 1, 5ul. Ananasowa · NasielskNumbers: 4, 6ul. Królowej Bony · NasielskNumbers: 9, 15ul. Limonkowa · NasielskNumbers: 11ul. Słoneczna · CieksynNumbers: 20A, 22K, 32A, 32Cul. Świerkowa · CieksynNumbers: 25C, 25F, 25Gul. Leśna · CieksynNumbers: 60Jul. Nasielska · CieksynNumbers: 1B, 1Cul. Wczasowa · CieksynNumbers: 43ul. Irysowa · CieksynNumbers: 13ul. Bohaterów 1920 Roku · BorkowoNumbers: 16A, 30Aul. Polna · BorkowoNumbers: 37ul. Młodzieżowa · BorkowoNumbers: 4Aul. Wspólna · BorkowoNumbers: 4B, 6Aul. Rzeczna · BorkowoNumbers: 25, 39ul. Spacerowa · BorkowoNumbers: 12ul. Wypoczynkowa · BorkowoNumbers: 17ul. Bohaterów Wojny 1920 r. · BorkowoNumbers: 59ul. Generała Władysława Sikorskiego · BorkowoNumbers: 30Aul. Onyksowa · Nowe PieścirogiNumbers: 5ul. Kolejowa · Nowe PieścirogiNumbers: 5Bul. Kameralna · Nowe PieścirogiNumbers: 6, 6A, 6B, 8, 8A, 8Bul. Złota · Nowe PieścirogiNumbers: 1Aul. Makowa · Stare PieścirogiNumbers: 6Aul. Generała Władysława Sikorskiego · Stare PieścirogiNumbers: 2A, 16ul. Przytorowa · MogowoNumbers: 25A, 32Aul. Długa · MogowoNumbers: 32Aul. Polna · MogowoNumbers: 9ul. Krańcowa · MogowoNumbers: 15Aul. Boczna · PsucinNumbers: 1–10, 12, 14, 16, 18ul. Dębowa · PsucinNumbers: 1–3, 3A, 4–9, 9A, 10–16, 18ul. Kolejowa · PsucinNumbers: 1–50, 50a, 51–70, 70A, 71–74, 74A, 75–86, 88, 90, 92, 94, 94Aul. Krótka · PsucinNumbers: 1–2, 2a, 3–7, 7a, 8–12, 14ul. Krzywa · PsucinNumbers: 1–16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80ul. Leśna · PsucinNumbers: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 40A, 42, 44, 46ul. Lipowa · PsucinNumbers: 1–2, 2a, 3–4, 4a, 5–7, 7A, 7B, 7D, 7E, 7F, 7G, 7H, 7J, 7K, 7L, 7M, 7N, 7P, 7R, 7S, 7T, 7U, 7W, 7Z, 8–15, 15a, 15b, 16–40, 42, 42A, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68ul. Malinowa · PsucinNumbers: 1–37, 39, 41, 43, 68ul. Mokra · PsucinNumbers: 1–46, 48, 50, 52, 54, 56, 58, 60, 62, 64ul. Ogrodowa · PsucinNumbers: 1–24, 26, 28, 30, 32, 34, 36, 38ul. Polna · PsucinNumbers: 1–52ul. Sportowa · PsucinNumbers: 1–48, 48A, 49–55ul. Sucha · PsucinNumbers: 1–81, 83, 85, 87, 89, 91ul. Warszawska · PsucinNumbers: 1–22, 22A, 23–39, 39A, 40–49, 49A, 49B, 50–60, 60a, 61–68, 70, 72, 72A, 74, 76, 78, 80, 80a, 82, 84, 86, 88, 90, 92, 94ul. Małej Łąki · MiękoszynekNumbers: 8, 10Aul. Begonii · MiękoszynekNumbers: 7ul. Łąkowa · SiennicaNumbers: 15, 15Aul. Akacjowa · SiennicaNumbers: 4–5, 11ul. Generała Władysława Sikorskiego · SiennicaNumbers: 1–2, 4–5, 7, 10, 12, 14, 16, 21, 23, 26, 28, 33, 35–36, 38, 38A, 40, 40A, 42, 42A, 42B, 46–47, 47A, 49, 51, 53, 55, 61, 63, 65, 71, 85, 97, 97a, 99ul. Marszałka Józefa Piłsudskiego · SiennicaNumbers: 2, 2a, 4, 6, 9, 11–18, 18A, 19–22, 22A, 24–25, 25A, 26–29, 29A, 31, 31A, 32A, 33, 36–37, 47ul. Ogrodowa · SiennicaNumbers: 1–2, 4, 6, 8, 10, 12, 15, 17–18, 18A, 19–22, 22a, 23–24, 26, 26B, 27–28, 28A, 29–30, 32, 34, 36, 38ul. Polna · SiennicaNumbers: 4, 10, 12, 14ul. Siennicka · SiennicaNumbers: 1, 1A, 7, 9, 9a, 13, 17, 19, 21, 25, 25A, 27, 29, 31, 33, 33A, 33B, 39, 41, 43, 45, 47, 49, 53, 55ul. Cyprysowa · ŻabiczynNumbers: 4, 10, 19, 25, 28, 30ul. Echa Leśne · ŻabiczynNumbers: 28, 32, 42, 46, 50, 54, 58ul. Jałowcowa · ŻabiczynNumbers: 8ul. Słoneczna · AleksandrowoNumbers: 20B, 44Mul. Wakacyjna · Dobra WolaNumbers: 5, 7, 13, 19, 23ul. Lipowa · AleksandrowoNumbers: 7Cul. Krajobrazowa · Budy SiennickieNumbers: 1, 1A, 2–16, 18, 21, 23, 25ul. Malownicza · Budy SiennickieNumbers: 4–5, 7, 16, 18, 20, 22

Which localities have postal code 05-190?

How to address a letter or parcel in Poland?

Jan Kowalski
ul. 11 Listopada 1
05-190 Nasielsk

Write the postal code in the 00-000 format on the last line, before the town name. Put the recipient's full name on the first line and the street with building and flat number on the second. For mail from abroad, add POLAND as the final line.

Frequently asked questions

What address does postal code 05-190 cover?

Postal code 05-190 covers 64 localities: Nasielsk, Cieksyn, Borkowo, Nowe Pieścirogi, Stare Pieścirogi, Mogowo, Psucin, Miękoszynek, Siennica, Aleksandrowo and more, including streets: 11 Listopada, Anny Jagiellonki, Armii Krajowej, Bajkowa, Bolesława Chrobrego (nowodworski county, mazowieckie voivodeship).

Where is postal code 05-190?

In mazowieckie voivodeship, nowodworski county, Poland.

Is postal code 05-190 enough to send a parcel?

No – always write the postal code together with the town or post office name and the full address (street and building number, or the village name with the house number).

Which postal codes are next to 05-190?

Which municipality and county does 05-190 belong to?

The 05-190 area (Nasielsk) lies in Nasielsk municipality (gmina), in nowodworski county (powiat), mazowieckie voivodeship, Poland. Centre of the area based on address points: 52.5843, 20.8005.

Where does this data come from?

Localities and postal codes come from the public TERYT registers (Statistics Poland), while streets, building numbers and locations come from the National Register of Boundaries (GUGiK). Data as of 12.11.2026. This site is not affiliated with Poczta Polska; for important shipments, confirm the code at a post office. More about sources