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Sejny, Poland
Podlasie · Poland
Sejny is a small city in Podlasie, Poland with a population of 5,872. Elevation: 446 ft (136 m). Average temperature: 44°F (7°C).
Data updated June 2026
Discover Sejny, Poland
Explore over 40 sections covering people, economy, housing, health, crime, climate, community, costs, trends, schools, colleges, hospitals, treatment centers, industries, museums, libraries, breweries, farmers markets, grocery stores, pharmacies, campgrounds, parks, trails, stadiums, ski resorts, daycare centers, nursing homes, churches, fire stations, cell towers, bridges, power plants, EV stations, prisons, radio stations, airports, police stations, post offices, Amtrak stations, superfund sites, UNESCO sites, and more.
Use the tabs and dropdown menus below to navigate every data point we track for this city.
People
Economy
C+Climate
| Population | 5,872 |
| Population Density | 2,837 / sq mi |
| Elevation | 446 ft (136 m) |
| Coordinates | 54.1080°, 23.3470° |
| Timezone | Europe/Warsaw |
| Country | 🇵🇱 Poland |
| State / Province | Podlasie |
| Average Temperature | 44°F (7°C) |
| January Average | 25°F (-4°C) |
| July Average | 63°F (17°C) |
| Annual Precipitation | 23.3 inches (592 mm) |
| Annual Snowfall | 7.2 inches (18 cm) |
| Median Household Income | $23,328 |
About Sejny
Sejny is a small city in Poland (Podlasie) with a population of 5,872. The city sits at an elevation of 446 feet (136 meters) above sea level. The average annual temperature is 44°F (7°C). Temperatures range from 25°F in January to 63°F in July. Annual precipitation averages 23.3 inches. The timezone is Europe/Warsaw.
Income: Sejny vs Poland
Commute Mode
Income
| Median HH Income | $23,328 |
| 69% below Poland avg |
Employment & Poverty
| Establishments (County) | 352 |
Business (County)
Tax & Cost of Living
Commute & Transportation
Walkability
Climate in Sejny
Sejny has an average annual temperature of 7.4°C (45°F). The hottest month is Jul (18.4°C), the coldest is Jan (-2.6°C). Average annual precipitation is 643 mm.
Temperature
| Annual Average | 44.0°F |
| 19% below Poland avg | |
| January Average | 25°F (-4°C) |
| July Average | 63°F (17°C) |
| Sunny Days | 294 days/yr |
Geography
| Elevation | 446 ft (136 m) |
| Area | 2.1 sq mi (5.4 km²) |
| Population Density | 2,837/sq mi |
| Coordinates | 54.1080°N, 23.3470°W |
| Timezone | Europe/Warsaw |
Precipitation & Snow
Air Quality
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 1.3 in | Coldest |
| February | 26°F (-3°C) | 1.0 in | Driest |
| March | 33°F (0°C) | 1.3 in | |
| April | 44°F (7°C) | 1.5 in | |
| May | 54°F (12°C) | 2.0 in | |
| June | 60°F (16°C) | 2.8 in | |
| July | 63°F (17°C) | 3.3 in | Warmest, Wettest |
| August | 62°F (17°C) | 2.5 in | |
| September | 54°F (12°C) | 2.2 in | |
| October | 45°F (7°C) | 1.9 in | |
| November | 35°F (2°C) | 1.7 in | |
| December | 29°F (-2°C) | 1.7 in |
Sejny has a seasonal temperature swing of 38°F / from 25°F in January to 63°F in July. Total annual precipitation is 23.3 inches, with July being the wettest month (3.3") and February the driest (1.0").
Schools in Sejny
5 public schools (NCES 2022-23 data).
| School | Level | Enrollment | Teachers | Student/Teacher |
|---|---|---|---|---|
| Szkoła Podstawowa im. Majora Henryka Dobrzańskiego "Hubala" w Sejnach | - | - | - | - |
| Zespół Szkół Centrum Kształcenia Rolniczego im. Stanisława Staszica w Sejnach | - | - | - | - |
| Zespół Szkół Ogólnokształcących | - | - | - | - |
| Szkoła Podstawowa im. Majora Henryka Dobrzańskiego "Hubala" w Sejnach | - | - | - | - |
| Szkoła Podstawowa w Berżnikach | - | - | - | - |
Radio Stations near Sejny
1 stations within ~55 km.
| Station | Genre | Quality | |
|---|---|---|---|
| Radio Orthodoxia | christian | MP3 192 kbps |
Museums in Sejny
| Name | Type | Address | Phone | Annual Revenue |
|---|---|---|---|---|
| Dwór Miłosza w Krasnogrudzie | ||||
| Etnografinė Prano Dzūko sodyba | ||||
| Historia i tradycje rybołówstwa nad Wigrami | ||||
| Klasztor podominikański | ||||
| Laisvės kovų muziejus | ||||
| Lazdijų krašto muziejus | ||||
| Motiejaus Gustaičio memorialinis muziejus | ||||
| Muzeum Regionalne | ||||
| Muzeum Ziemi Sejneńskiej im. Romualda Jałbrzykowskiego | ||||
| Pietų Lietuvos buities ir akmenų muziejus „Jotvingių kiemas“ | ||||
| Skansen - zagroda litewska |
Libraries in Sejny
| Name | Address | Staff | Annual Visits | Circulation | Collection | Programs |
|---|---|---|---|---|---|---|
| Biblioteka Publiczna w Sejnach | 0.0 | |||||
| Sangrūdos biblioteka | 0.0 |
Hotels in Sejny
1 hotels within city radius - OpenStreetMap data
Restaurants in Sejny
5 restaurants within city radius - OpenStreetMap data
Cafes in Sejny
1 cafes within city radius - OpenStreetMap data
Theatres in Sejny
1 theatres within city radius - OpenStreetMap data
Monuments in Sejny
2 monuments within city radius - OpenStreetMap data
Castles in Sejny
1 castles within city radius - OpenStreetMap data
Gas Stations in Sejny
5 gas stations within city radius - OpenStreetMap data
Banks in Sejny
1 banks within city radius - OpenStreetMap data
Airports Near Sejny
16 airports within the area.
| Airport | IATA | Type |
|---|---|---|
| Hrodna Airport | GNA | Medium Airport |
| Alytus Airfield | - | Small Airport |
| Balbieriškis airstrip | - | Small Airport |
| Brody Airfield | - | Small Airport |
| Dievogala Airstrip | - | Small Airport |
| Druskininkai Airfield | - | Small Airport |
| Griškabūdis Airstrip | - | Small Airport |
| Karolin Airfield | - | Small Airport |
| Keturvalakiai Airstrip | - | Small Airport |
| Krokialaukis | - | Small Airport |
| Lotnisko Białousy | - | Small Airport |
| Pociūnai Airfield | - | Small Airport |
| Sasnava Airfield | - | Small Airport |
| Suwałki Airfield | - | Small Airport |
| Trakėnai Airstrip | - | Small Airport |
| Vilkaviškis Airfield | - | Small Airport |
Post Offices in Sejny
1 post offices.
| Post Office | Address |
|---|---|
| Poczta |
Churches & Religious Organizations in Sejny
3 religious organizations (IRS tax-exempt data).
| Name | Address |
|---|---|
| Bazylika Kolegiacka Nawiedzenia Najświętszej Maryi Panny | |
| Kaplica cmentarna | |
| Kościół pw. Matki Boskiej Częstochowskiej |
Quick Facts
🇵🇱 About Poland
Public Holidays in Poland
14 public holidays this year
Frequently Asked Questions About Sejny
What is the population of Sejny?
Sejny has a population of 5,872 residents and is located in Poland. The population density is 2,837 people per square mile, spread across 2.1 square miles.
Is Sejny expensive to live in?
The median household income is $23,328, 69% below the national average of $75,149.
What is the weather like in Sejny?
Sejny has a cool climate with an average annual temperature of 44°F (7°C). Winter temperatures average 25°F in January, while summers reach an average of 63°F in July. The area receives 294 sunny days per year, well above the national average of 205. Annual rainfall totals 23.3 inches, with 7.2 inches of snow.
How is the job market in Sejny?
There are 352 business establishments in the area.