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Poland.gg
Delightfully crafted Statistical Portal for Poland
Polish
Po polsku
Sejneński County Statistics for 2025
2024
2025
2026

Regional Statistics

7,236
21 people/km²
18,434
Sejneński
5 municipalities
855 km²
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Population in Sejneński County 2025

In 2024, Sejneński county ranked 380 of 380 Polish counties. Population shrank by 1,480 residents -7.43% between 2019-2024, at 18,434.

Among 339 declining counties, in the bottom 20% for rate of decline. Within Podlaskie province, ranked 17 of 17 counties.

Based on 31 years of official GUS statistics for Sejneński county and its 5 municipalities within Podlaskie province.

Total Population
-1.13 % since 2023 2024
18,434
Poland 37,489,087
Province ranked 14/16 1,132,641
County ranked 17/17 18,434
Select municipality
Total Population Chart
Lowest at 18,434 in 2024 Highest at 22,218 in 1995
1995
29 years (+5 year forecast)
2024
Ranking
380/380 County in Poland
371
Kazimierski 31,373
372
Lipski 31,251
373
Nidzicki 30,207
374
Brzeziński 30,080
375
Łosicki 28,338
376
Leski 25,224
377
Gołdapski 24,612
378
Węgorzewski 20,611
379
Bieszczadzki 20,423
380
Sejneński 18,434
Page 38 of 38
Change
333/380 County in Poland
331
Świdwiński -1.1%
332
Zawierciański -1.1%
333
Sejneński -1.1%
334
Łęczycki -1.1%
335
Gostyniński -1.1%
336
Radom -1.1%
337
Kraśnicki -1.1%
338
Starachowicki -1.1%
339
Kluczborski -1.1%
340
Sosnowiec -1.1%
Page 34 of 38
Population Density
-0.92 % since 2023 2024
21.6 per km²
Vital Statistics births and deaths
Live Births
-7.02 % since 2023 2024
106
Deaths
+14.35 % since 2023 2024
247
Age Structure children, working age, and elderly
Children (0-14)
-4.17 % since 2023 2024
2,389
Working Age (15-64)
-1.26 % since 2023 2024
12,037
Elderly (65+)
+1.16 % since 2023 2024
4,008
Gender
Men
-1.11 % since 2023 2024
9,170
Women
-1.15 % since 2023 2024
9,264
Age Distribution from 0 to 75+ years
0-4 years
-7.25 % since 2023 2024
614
5-9 years
-3.19 % since 2023 2024
851
10-14 years
-2.94 % since 2023 2024
924
15-19 years
+2.72 % since 2023 2024
1,019
20-24 years
-1.52 % since 2023 2024
973
25-29 years
-2.89 % since 2023 2024
1,008
30-34 years
-5.95 % since 2023 2024
1,044
35-39 years
-7.55 % since 2023 2024
1,237
40-44 years
+4.34 % since 2023 2024
1,442
45-49 years
-1.31 % since 2023 2024
1,361
50-54 years
+1.31 % since 2023 2024
1,397
55-59 years
+2.09 % since 2023 2024
1,219
60-64 years
-3.81 % since 2023 2024
1,337
65-69 years
+1.56 % since 2023 2024
1,238
70-74 years
-1.52 % since 2023 2024
1,035
75-79 years
+14.12 % since 2023 2024
291
80-84 years
-4.20 % since 2023 2024
479
85+ years
-2.47 % since 2023 2024
553

Data Source: Statistics Poland, Local Data Bank (BDL)