# Östhammar Municipality

Östhammar Municipality (Östhammars kommun) is a municipality in Uppsala County in east central Sweden. Its seat is located in the city of Östhammar.
The present municipality was created during the local government reform in the late sixties and early seventies. Already in 1967 the City of Öregrund joined the City of Östhammar in a common municipality. It was the first time a former city joined another local government unit. By 1971 the new combined city became a municipality of unitary type and in 1974 more units were added.
In June 2018 the municipal council voted in favour of the building of Forsmark nuclear waste repository, with the final decision needing to be made by the Swedish government.

## Localities

All towns with over 200 inhabitants in 2000, from Statistics Sweden.
* Östhammar (seat)
* Gimo
* Österbybruk
* Hargshamn
* Dannemora
* Öregrund
* Alunda
* Skoby (part of this bimunicipal locality is in Uppsala Municipality)
* Norrskedika
Another notable village is Forsmark (pop. 59), where the Forsmark Nuclear Power Plant is situated.

## Demographics

This is a demographic table based on Östhammar Municipality's electoral districts in the 2022 Swedish general election sourced from SVT's election platform, in turn taken from SCB official statistics.
In total there were 17,497 Swedish citizens of voting age resident in the municipality. 42.1% voted for the left coalition and 56.9% for the right coalition. Indicators are in percentage points except population totals and income.
| Location | Residents | Citizen adults | Left vote | Right vote | Employed | Swedish parents | Foreign heritage | Income SEK | Degree |
| Location | | | % | % | | | | | |
| Alunda-Ekeby | 2,138 | 1,651 | 35.8 | 63.0 | 88 | 94 | 6 | 26,935 | 29 |
| Alunda tätort | 2,544 | 1,829 | 39.0 | 59.9 | 88 | 92 | 8 | 26,275 | 32 |
| Ed | 1,588 | 1,211 | 42.4 | 57.0 | 90 | 89 | 11 | 27,948 | 30 |
| Gimo-Hökhuvud-Vattensta | 1,611 | 1,240 | 44.8 | 54.3 | 88 | 86 | 14 | 27,335 | 23 |
| Gimo V | 1,812 | 1,306 | 45.1 | 54.0 | 76 | 71 | 29 | 23,488 | 22 |
| Hargshamn-Boda | 1,387 | 1,131 | 45.5 | 53.4 | 86 | 89 | 11 | 25,644 | 29 |
| Kristinelund-Boda | 1,534 | 1,101 | 46.5 | 52.5 | 78 | 80 | 20 | 23,682 | 32 |
| Norrskedika-Valö-Forsmark | 1,332 | 1,131 | 40.5 | 58.6 | 85 | 92 | 8 | 25,930 | 23 |
| Öregrund N-Gräsö | 1,408 | 1,261 | 42.9 | 56.6 | 84 | 94 | 6 | 23,926 | 30 |
| Öregrund S-Söderön | 1,785 | 1,450 | 39.7 | 59.9 | 87 | 92 | 8 | 26,182 | 30 |
| Österbybruk-Dannemora | 2,076 | 1,584 | 42.5 | 56.1 | 86 | 85 | 15 | 24,980 | 21 |
| Österbybruk-Morkarla | 1,667 | 1,315 | 40.0 | 57.8 | 85 | 87 | 13 | 25,694 | 20 |
| Östhammars C | 1,470 | 1,287 | 47.1 | 52.3 | 85 | 90 | 10 | 23,710 | 29 |
| Source: SVT ||||||||||

## Climate

Österbybruk has a humid continental climate that is quite mild throughout the year, especially considering its northerly latitude.
Climate data for Österbybruk, 2002-2015 (precipitation 1961-1990) :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 10.0 (50.0) | 11.9 (53.4) | 17.7 (63.9) | 27.4 (81.3) | 28.6 (83.5) | 30.6 (87.1) | 34.4 (93.9) | 32.8 (91.0) | 27.6 (81.7) | 20.6 (69.1) | 14.4 (57.9) | 12.6 (54.7) | 34.4 (93.9) |
| Mean daily maximum °C (°F) | −0.5 (31.1) | 0.2 (32.4) | 4.4 (39.9) | 10.9 (51.6) | 15.9 (60.6) | 19.7 (67.5) | 23.0 (73.4) | 21.6 (70.9) | 16.6 (61.9) | 9.4 (48.9) | 4.4 (39.9) | 1.1 (34.0) | 10.5 (50.9) |
| Daily mean °C (°F) | −3.5 (25.7) | −3.1 (26.4) | −0.1 (31.8) | 5.3 (41.5) | 10.0 (50.0) | 14.4 (57.9) | 17.3 (63.1) | 16.0 (60.8) | 11.5 (52.7) | 5.7 (42.3) | 1.9 (35.4) | −1.7 (28.9) | 6.1 (43.0) |
| Mean daily minimum °C (°F) | −6.6 (20.1) | −6.5 (20.3) | −4.6 (23.7) | −0.2 (31.6) | 4.2 (39.6) | 8.1 (46.6) | 11.6 (52.9) | 10.5 (50.9) | 6.4 (43.5) | 2.0 (35.6) | −0.6 (30.9) | −4.4 (24.1) | 1.6 (34.9) |
| Record low °C (°F) | −34.0 (−29.2) | −30.4 (−22.7) | −27.3 (−17.1) | −13.8 (7.2) | −5.6 (21.9) | −2.0 (28.4) | 1.0 (33.8) | −1.0 (30.2) | −4.7 (23.5) | −15.6 (3.9) | −20.9 (−5.6) | −32.4 (−26.3) | −34.0 (−29.2) |
| Average precipitation mm (inches) | 46.5 (1.83) | 32.5 (1.28) | 33.2 (1.31) | 35.0 (1.38) | 31.7 (1.25) | 38.8 (1.53) | 74.6 (2.94) | 73.8 (2.91) | 58.9 (2.32) | 55.1 (2.17) | 62.0 (2.44) | 51.6 (2.03) | 593.6 (23.37) |
| Source 1: SMHI ||||||||||||||
| Source 2: SMHI Monthly Data 2002-2015 ||||||||||||||
Climate data for Films Kyrkby, 1961-2018 (precipitation 1961-1990) :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Mean daily maximum °C (°F) | −1.3 (29.7) | −1.2 (29.8) | 2.6 (36.7) | 9.0 (48.2) | 15.4 (59.7) | 20.0 (68.0) | 21.7 (71.1) | 19.9 (67.8) | 15.1 (59.2) | 9.6 (49.3) | 3.3 (37.9) | −0.4 (31.3) | 9.8 (49.6) |
| Daily mean °C (°F) | −4.8 (23.4) | −4.7 (23.5) | −2.0 (28.4) | 3.4 (38.1) | 9.5 (49.1) | 14.2 (57.6) | 15.9 (60.6) | 14.3 (57.7) | 10.1 (50.2) | 5.9 (42.6) | 0.8 (33.4) | −3.1 (26.4) | 5.0 (41.0) |
| Mean daily minimum °C (°F) | −8.3 (17.1) | −8.4 (16.9) | −6.4 (20.5) | −1.8 (28.8) | 4.1 (39.4) | 8.4 (47.1) | 10.1 (50.2) | 9.8 (49.6) | 5.0 (41.0) | 2.2 (36.0) | −1.7 (28.9) | −5.8 (21.6) | 0.2 (32.4) |
| Source 1: SMHI ||||||||||||||
| Source 2: SMHI Monthly Data 2002-2015 ||||||||||||||