Statistics from SCB
Södermanlands län
Population, population change and age structure in Trosa, compared with Sweden. Statistics from SCB.
Population
14,900
31 December 2025
Five-year change
+4.1%
2020–2025
Sweden: +2.2%
Calculated by sverige.fyi from SCB data
Population trend
Population on 31 December each year, 2015–2025.
| Year | Residents |
|---|
| 2015 | 12,078 |
|---|
| 2016 | 12,447 |
|---|
| 2017 | 12,916 |
|---|
| 2018 | 13,309 |
|---|
| 2019 | 13,747 |
|---|
| 2020 | 14,309 |
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| 2021 | 14,658 |
|---|
| 2022 | 14,760 |
|---|
| 2023 | 14,885 |
|---|
| 2024 | 14,927 |
|---|
| 2025 | 14,900 |
|---|
Age structure
Share of the population in each five-year age group, 2025.
Trosa Sweden
Hover, or focus the chart and step with the left and right arrow keys.
| Age | Trosa · Share | Trosa · Count | Sweden · Share | Sweden · Count |
|---|
| Ages 0–4 | 4.4% | 662 | 4.9% | 522,283 |
|---|
| Ages 5–9 | 6.4% | 951 | 5.6% | 598,642 |
|---|
| Ages 10–14 | 6.4% | 960 | 5.9% | 624,495 |
|---|
| Ages 15–19 | 5.8% | 870 | 6.0% | 634,336 |
|---|
| Ages 20–24 | 3.8% | 568 | 5.7% | 602,824 |
|---|
| Ages 25–29 | 3.2% | 478 | 5.8% | 618,019 |
|---|
| Ages 30–34 | 5.7% | 850 | 7.0% | 745,695 |
|---|
| Ages 35–39 | 6.0% | 901 | 7.1% | 756,657 |
|---|
| Ages 40–44 | 6.0% | 893 | 6.3% | 667,164 |
|---|
| Ages 45–49 | 5.9% | 879 | 6.0% | 638,977 |
|---|
| Ages 50–54 | 6.5% | 973 | 6.3% | 667,467 |
|---|
| Ages 55–59 | 7.0% | 1,050 | 6.3% | 663,165 |
|---|
| Ages 60–64 | 6.4% | 960 | 5.9% | 630,264 |
|---|
| Ages 65–69 | 6.1% | 907 | 5.2% | 550,159 |
|---|
| Ages 70–74 | 6.1% | 906 | 4.8% | 505,291 |
|---|
| Ages 75–79 | 6.5% | 966 | 4.7% | 496,130 |
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| Ages 80–84 | 4.8% | 719 | 3.6% | 379,771 |
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| Ages 85–89 | 1.8% | 272 | 1.9% | 196,920 |
|---|
| Ages 90–94 | 0.7% | 104 | 0.8% | 82,062 |
|---|
| Ages 95–99 | 0.1% | 22 | 0.2% | 22,225 |
|---|
| 100 years or older | 0.0% | 6 | 0.0% | 2,988 |
|---|