Postal code 18-230 – Ciechanowiec

Ciechanowiec, Ciechanowiec municipality, wysokomazowiecki county, podlaskie voivodeship

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Code 18-230:

localities: 37
streets: 55
buildings: 1,495

Postal code 18-230 is used in 37 localities, including Ciechanowiec, Antonin, Bujenka, Ciechanowczyk, Czaje-Bagno (Ciechanowiec municipality, wysokomazowiecki county, podlaskie voivodeship). It covers 1495 buildings on 55 streets – the full list with house numbers is below.

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Post offices in Ciechanowiec – show branches on the map →

Location

37 localities

Ciechanowiec municipality · wysokomazowiecki county

podlaskie voivodeship

Which streets have postal code 18-230?

ul. Brzozowa · CiechanowiecNumbers: 1, 3–10 ul. 11 Listopada · CiechanowiecNumbers: 1, 1A, 2–3, 5, 5B, 5a, 6–8, 10, 12 ul. 3 Maja · CiechanowiecNumbers: 1–4, 4A, 5–8, 12–16, 19–22, 22A, 23–30 ul. Akacjowa · CiechanowiecNumbers: 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35 ul. Armii Krajowej · CiechanowiecNumbers: 1–3, 5, 5a, 15, 17, 19, 21 ul. Czyżewska · CiechanowiecNumbers: 1–2, 2A, 3, 6, 8, 10, 12, 12A, 14, 16, 20, 22, 24, 24A, 26, 28, 30, 30A, 32, 34, 34A, 36, 38, 40, 42 ul. Długa · CiechanowiecNumbers: 1–2, 2A, 2B, 3, 3A, 3B, 4–6, 6a, 7, 7A, 8, 8a, 9–11, 13 dr. Pawła Olszewskiego · CiechanowiecNumbers: 3–11, 13, 15, 17–18 ul. Drohicka · CiechanowiecNumbers: 1, 3–15, 16A, 17–35, 36A, 36B, 37–38, 38A, 39–41, 41B, 41a, 42–49, 49A, 50–51, 51a, 52–61, 61A, 62–66, 68–73, 73A, 73B, 74, 74A, 75–77, 79–80, 80A, 84, 84A, 86, 88 ul. Dworska · CiechanowiecNumbers: 1, 1A, 2–10, 10A, 11, 11A, 11B, 12, 12a, 13–14, 14A, 15–20, 20A, 21–22, 22A, 24, 26, 28, 30, 32, 34, 34A, 36, 38, 38A, 40, 42, 44 ul. Elizy Orzeszkowej · CiechanowiecNumbers: 1–19, 21–24 ul. Glinki · CiechanowiecNumbers: 1, 1A, 1B, 2–4, 6–7, 9 ul. Jana Pawła II · CiechanowiecNumbers: 1–3, 3A, 4–6, 6A, 7–10 ul. Kazimierza Uszyńskiego · CiechanowiecNumbers: 4, 4A, 5–7, 9–10, 12–13, 15, 15A, 21, 27, 29, 31, 33 ul. Kilińskiego · CiechanowiecNumbers: 1, 3–8, 10, 12–14, 16, 18, 20, 22–23, 23a, 24–25 ul. Klonowa · CiechanowiecNumbers: 1–22, 25–30, 32, 34–39 ul. Kościelna · CiechanowiecNumbers: 1–14, 14A, 15–21, 21A, 22–23, 23a, 24, 26–29, 29D, 29a, 29b, 29c, 30–42, 44, 44A, 45, 47 ul. Kościuszki · CiechanowiecNumbers: 1–6, 8–25, 27, 27a, 28–40, 40A, 41–50, 50A, 52, 52A, 52B, 54–55, 57, 59, 61, 63, 65 ul. Kozarska · CiechanowiecNumbers: 1–3, 5–8, 8a, 9–15, 15a, 16, 17A, 18–22, 22A, 23–24, 24A, 25–33, 35–37, 39, 41, 41A, 43, 45, 45A, 47 ks. Krzysztofa Kluka · CiechanowiecNumbers: 2–6 ul. Kuczyńska · CiechanowiecNumbers: 1, 1a, 1b, 2–3, 3A, 4–7, 7a, 8–18, 18a, 19–20, 22–23, 23A, 24, 24C, 25–26, 26a, 27, 27a, 28–30, 32–48, 50, 52, 54, 56, 56A, 56B, 57, 57A, 57B, 58–62, 62A, 63–66, 66A, 67, 69–70, 72, 74, 76, 78, 80 ul. Lipowa · CiechanowiecNumbers: 1–6, 8–16, 16A, 17–29, 31–32 ul. Łomżyńska · CiechanowiecNumbers: 1, 1a, 2, 2A, 2b, 3–4, 4A, 4B, 5–10, 12, 12A, 13–20, 22–37, 39–56, 56A, 57–60, 62, 64, 66, 66A, 68 ul. Marii Konopnickiej · CiechanowiecNumbers: 1A, 15, 17 ul. Mickiewicza · CiechanowiecNumbers: 1–2, 6, 7A, 8, 10, 12, 12A, 13–17, 17a, 18, 18A, 18B, 19–21, 23–29, 29A, 30–33, 33A, 33B, 34, 34a, 36–38, 40–47, 47a, 48–49, 51–56, 56A, 57, 57A, 58, 58A, 59, 59A, 60–62, 64, 66 ul. Młyńska · CiechanowiecNumbers: 2–5 ul. Mogilna · CiechanowiecNumbers: 1–7, 7A, 8, 11–13, 13A, 14–18, 18a, 20a, 22–24, 26, 28, 30, 32 ul. Mostowa · CiechanowiecNumbers: 1, 3, 6, 8–9, 11 ul. Odrodzenia · CiechanowiecNumbers: 1, 1a, 2–10 ul. Ogrodowa · CiechanowiecNumbers: 3–6, 6A, 9, 11–12, 12A, 13, 13A, 15, 17 ul. Pałacowa · CiechanowiecNumbers: 2–8, 8B, 8a, 9–10, 10A, 11–13, 16, 20, 20A, 22 ul. Parkowa · CiechanowiecNumbers: 2, 2A, 3–8, 8/2, 9–10, 10A, 11–16, 18 ul. Pińczowska · CiechanowiecNumbers: 1, 3–7, 7A, 8–10, 10A, 10B, 12–18, 20–21, 24–29, 31, 36, 38, 40, 42 ul. Podlaska · CiechanowiecNumbers: 1, 1A, 1B, 1C, 1D ul. Polna · CiechanowiecNumbers: 1–3, 3A, 4, 4A, 5–6, 8, 8A, 12 ul. Polska · CiechanowiecNumbers: 1–3, 3a, 3b, 4, 4A, 4c, 5–9, 11, 13, 15, 17, 19, 21, 25 ul. Przechodnia · CiechanowiecNumbers: 3, 6, 8, 10 ul. Ralkowa · CiechanowiecNumbers: 1–6, 6A, 7, 7a, 8–9, 9a, 9b, 10–11, 13, 16–20, 23–24, 26, 26A, 27, 27A, 27C, 29–33, 35–36, 36A, 37–39, 42–44, 47, 48D, 49A, 52 ul. Sienkiewicza · CiechanowiecNumbers: 1, 1A, 1B, 1C, 1D, 1F, 1I, 1J, 2–3, 3A, 4–5, 5A, 6, 6a, 6b, 7, 7A, 8–14, 14a, 15–16, 16a, 17–29, 29A, 30–31, 33, 35, 37, 39, 39a, 39b, 41, 41A, 41B, 43, 43A, 45, 45a, 45b, 45c, 47, 47B, 47C, 47D, 48–49, 51, 53, 53A, 53B, 54–55, 55A, 55B, 57, 59 ul. Sosnowa · CiechanowiecNumbers: 1–3, 5, 7–12, 12A, 13, 14A, 15, 18, 20, 20A, 21, 24–25, 25B, 25D, 33 ul. Spółdzielcza · CiechanowiecNumbers: 1–3, 5, 5A, 6–7, 9, 11, 13, 19 ul. Stadion · CiechanowiecNumbers: 1 ul. Staropolska · CiechanowiecNumbers: 2, 4, 6, 6a, 7–8 ul. Świerkowa · CiechanowiecNumbers: 1–5, 5A, 6–8, 10–13, 17, 19–22, 22H, 22L, 22N, 23–25, 27, 29, 31–32, 34, 36–38, 42, 44, 44A, 45–46 ul. Świętojańska · CiechanowiecNumbers: 1, 3, 3a, 4–5, 9, 11 ul. Szeroka · CiechanowiecNumbers: 3–12, 12A, 13, 13A, 13B, 14–16, 16A, 17–18, 18A, 19–20, 20A, 21–23, 23a, 24–25, 27, 29 ul. Szkolna · CiechanowiecNumbers: 1, 1A, 2–3, 3a, 4, 4A, 5, 5a, 6–7, 7A, 7B, 7C, 7D, 8–11, 11A, 13 ul. Uszyńska · CiechanowiecNumbers: 1, 1a, 2–3, 3A, 5–9, 9A, 10, 12–19, 19A, 20, 20A, 21–22, 22a, 23–24, 24B, 24a, 25–26, 28–31, 33–37, 37A, 37b, 38, 38A, 38b, 39, 39A, 39B, 39C, 39D, 40–42, 44–45, 45A, 46–51, 51A, 52–55, 57, 57A, 65, 71, 73, 83, 85, 87 ul. Wąska · CiechanowiecNumbers: 1, 3–13, 15–17, 19–20, 22, 24, 26, 28, 28A, 30, 32, 34, 36, 38 ul. Wiatraczna · CiechanowiecNumbers: 1, 1A, 3–7, 9 ul. Wierzbowa · CiechanowiecNumbers: 3–11, 11A, 12–17, 17A, 18–19, 19A, 20–26, 32, 40, 42, 48 ul. Wińska · CiechanowiecNumbers: 1, 3, 5–6, 6A, 8–16, 18, 20, 22, 24, 26, 26A, 28, 28A, 32, 34 ul. Wojska Polskiego · CiechanowiecNumbers: 4–5, 5A, 5B, 5C, 5D, 6–9, 9A, 10–12, 12A, 12B, 12C, 12D, 13, 15, 17, 19, 21, 21A, 23, 23A, 25 ul. Wspólna · CiechanowiecNumbers: 1, 1a, 2–5, 7, 7a, 8–14, 16, 16a, 17–20, 20A, 21, 21A, 23–30, 32–42, 44–48, 48a, 49–52, 52a, 53–54, 56–57, 59, 59a, 63–65, 67–69 ul. Żwirki i Wigury · CiechanowiecNumbers: 6, 8, 10, 10A, 12

How to address a letter or parcel in Poland?

Jan Kowalski
ul. Brzozowa 1
18-230 Ciechanowiec

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 18-230 cover?

Postal code 18-230 covers 37 localities: Ciechanowiec, Antonin, Bujenka, Ciechanowczyk, Czaje-Bagno, Czaje-Wólka, Dąbczyn, Gaj, Kobusy, Koce-Basie and more, including streets: Brzozowa, 11 Listopada, 3 Maja, Akacjowa, Armii Krajowej (wysokomazowiecki county, podlaskie voivodeship).

Where is postal code 18-230?

In podlaskie voivodeship, wysokomazowiecki county, Poland.

Is postal code 18-230 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 municipality and county does 18-230 belong to?

The 18-230 area (Ciechanowiec) lies in Ciechanowiec municipality (gmina), in wysokomazowiecki county (powiat), podlaskie voivodeship, Poland. Centre of the area based on address points: 52.6886, 22.4930.

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