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31130 Koijärvi

Postcode area 31130 Koijärvi had 238 residents at the end of 2024. Median disposable income of adults was €27,033 in 2024, 16% above the municipal level. 92% of homes were detached, semi-detached or terraced houses. From the area’s service centre, 2 everyday shops and services are within a 15-minute walk.

Postcode area · Statistics Finland · Updated 24 October 2026
238residents31 December 2024
€27,033median incomeadults, 2024
11%of households rentingtenure
34%green within 500 maverage
31130 Koijärvi · Forssa31130 Koijärvi highlighted; the rest of the municipality in grey
Map of Forssa with 31130 Koijärvi highlighted

Sources: Statistics Finland, Paavo open data by postal code area 2026 (CC BY 4.0) · Statistics Finland, municipal and regional boundaries 2026 (CC BY 4.0) · © OpenStreetMap contributors (ODbL)

People.

Age at the end of 2024, next to the figure for Forssa.

15%
aged under 16
8%
aged 16–24
21%
aged 25–44
27%
aged 45–64
29%
aged 65 and over
47
years, average age

Main activity

Employed44%
Unemployed4%
Students6%
Pensioners31%
Children aged 0–1413%
Others2%

Population at the end of each year

2015260
2016256
2017253
2018258
2019254
2020262
2021264
2022253
2023254
2024238

Source: Statistics Finland, Paavo open data by postal code area 2026 (CC BY 4.0)

Income and education.

Disposable income in 2024 and education at the end of 2024.

€27,033
median income, adults
€30,696
mean income, adults
7.9%
unemployment rate

Education of adults

No qualification after basic education18%
Matriculation examination2%
Vocational qualification53%
Lower university or polytechnic degree24%
Higher university degree5%

Income is the disposable money income of residents aged 18 and over in 2024: taxable and tax-free income minus taxes and contributions. The median is the middle value, so a few high earners do not pull it up.

Source: Statistics Finland, Paavo open data by postal code area 2026 (CC BY 4.0)

Homes.

122 households and 154 homes at the end of 2024.

2.0
people per household
51.6 m²
floor area per person
94.4 m²
average home size
0%
of homes in blocks of flats

Households by tenure

Owner-occupied89%
Rented11%
Other tenure0%

Households

One-person households47%
Young one-person households5%
Households with children19%
Pensioner households39%

Household groups overlap: young one-person households, for example, are also counted as one-person households.

51jobs located hereworkplaces
127summer cottages and other leisure homesleisure homes
92%of homes in housesdetached, semi-detached, terraced

Statistics Finland withholds a figure when fewer than 30 people are behind it (fewer than 10 for workplaces). Missing figures are shown as a dash and never estimated.

Source: Statistics Finland, Paavo open data by postal code area 2026 (CC BY 4.0)

Everyday life.

2 everyday shops and services within a 15-minute walk; 34% green space within 500 metres.

Supermarkets and convenience shops0
Bakeries0
Pharmacies0
Doctors and health centres0
Dentists0
Cafés and pubs0
Restaurants0
Parks0
Playgrounds0
Sports pitches1
Gyms and sports centres0
Libraries0
Day-care centres0
Bus stops6
Tram and metro stops0
Railway stations0
1schoolOpenStreetMap
0day-care centresOpenStreetMap
15.2 kmto the nearest stationrail, tram or metro
5residents per km²45.5 km²

Services and green space are measured from each postcode area’s service centre: the point inside the area with the most shops and services within 500 metres. Municipal and regional figures are averages weighted by population.

Source: © OpenStreetMap contributors (ODbL). Within one kilometre.

More postcode areas in Forssa.