Living in Kosai

In Kosai, rents across existing tenancies average €6.74 per m² a month (2023).

Kosai registered an unemployment rate of 4.22% at the end of 2020.

Last checked 2026-09-2426 sources

Population57,885people1 Oct 2020Official source · Japan 2020 Census municipality population table

Median gross salary (region)288EUR/month31 Dec 2024Official source · www.e-stat.go.jp

Average net rent6.74EUR/m²/monthcountry median €6.27 — 8% aboveOfficial source · www.e-stat.go.jp

Unemployment rate4.22%country median 3.8% — 12% aboveOfficial source · 総務省統計局 (e-Stat, 国勢調査2020 就業状態等基本集計第1-2表)

Recorded crime506.3incidents per 100,00031 Dec 2025Regional figureOfficial source · 令和７年の犯罪情勢 / 令和７年の犯罪情勢統計表, 図表1-5-2

PM2.5, annual mean8.9µg/m³country median 8.4 — 6% aboveOfficial source · MOE Japan Air Pollution Monitoring Report FY2023 — 湖西市

Pricier rent than 61% of Japanese cities that publish it, higher unemployment than 72% of Japanese cities that publish it and dirtier air than 61% of Japanese cities that publish it.

Which Japan-wide rules apply when you move to Kosai?

National rules stay on the country page instead of being relabelled as city data.

Visa and entry rulesPassport-specific entry and national residence context.BenefitsCountry-wide eligibility and official application routes.Taxes in JapanNational rates and thresholds that apply in Kosai.Healthcare eligibilityCountry-wide insurance and residence conditions.

Housing and cost

Japan's Housing and Land Survey monthly-rent measure excludes security deposits, key money/right money and common-area charges. The Ministry of Land says deposit terms vary by regional custom; these sources provide context, not a comparable city-level distribution. Statistics Bureau glossary (2018) · MLIT rental-housing Q&A.

How much does it cost to rent in Kosai?

Average net cold rent is about 6.74 EUR/m² per month (2023 Housing and Land Survey), excluding heating and operating charges.

Published average over existing tenancies; a specific flat can sit either side of it. Asking-rent series, where present, are separate rows in the table.

Average net rent (nettokalt): 6.74 EUR/m²/month · www.e-stat.go.jp¹⁴

What recurs every month2 published recurring costs, € per month

€ / month

Internet, 60 Mbps€32

Mobile plan, 10 GB€22

Net rent across major citiesKosai highlighted among comparable cities

net rent, € / m² / month

Kawasaki€13.36

Yokohama€11.97

Osaka€10.65

Kyoto€10.46

Sapporo€7.56

Kosai€6.74

Show the other 6 cities

Saitama€10.37

Fukuoka€9.00

Kobe€8.87

Sendai€8.85

Nagoya€8.81

Hiroshima€8.38

Metric	Value	Period	Source
Internet, 60 Mbps unlimited	31.61 EUR/month	30 Sept 2026	ドコモ光月額料金 — NTTドコモ¹⁶Official · national market
Mobile plan, 10 GB	21.56 EUR/month	30 Sept 2026	docomo mini 10GB²Official · national market
Average net rent (nettokalt)	6.74 EUR/m²/monthcountry median €6.27	31 Dec 2023	www.e-stat.go.jp¹⁴Official
Average monthly rent (whole dwelling)	315.3 EUR/month	31 Oct 2023	Housing and Land Survey 2023, Table 112-3-2: Monthly Rent of Dwelling by Type of Dwelling — Japan, prefecture, shi, ku, machi and mura⁵Official

Is Kosai a good place to live?

There is no universal answer. The profile scores below show who the available published evidence may suit; they are a decision aid, not a personal recommendation.

Try your profile

Remote worker51%strong on work, weak on air quality · range 42–60%

Skilled employee58%strong on work, weak on safety · range 50–66%

Student53%strong on education, weak on work · range 45–61%

Family55%strong on safety, weak on legal route · range 46–64%

Retirement49%strong on safety, weak on admin · range 39–59%

Worked out from these numbers

What does a 60 m² flat cost?

About 405 EUR a month in cold rent at the published average of about 6.74 EUR/m² per month, before heating and operating charges.

Heating, water and operating charges come on top, and a specific flat can sit either side of an average.

Source period: 2023 Housing and Land Survey

Work and income

What is the unemployment rate in Kosai?

The unemployment rate is about 4.2 % (October 2020).

Unemployment rate: 4.22 % · 総務省統計局 (e-Stat, 国勢調査2020 就業状態等基本集計第1-2表)¹⁹

Unemployment across cities in JapanUnemployment in Kosai is 4.2%. Of 1,816 cities with data, 818 have unemployment of 3 to under 4%.

250

818

531

126

0–11–22–33–44–55–66–77–88–99–10

Kosai 4.2%

Unemployment rate (%)

Metric	Value	Period	Source
Median gross salary (regional)	288 EUR/month	31 Dec 2024	www.e-stat.go.jp¹⁵Official
Unemployment rate	4.22 %country median 3.8%	31 Dec 2020	総務省統計局 (e-Stat, 国勢調査2020 就業状態等基本集計第1-2表)¹⁹Official

What does a salary buy in Kosai?

Take-home pay after tax, minus rent and the everyday bills this city publishes. Each line names its source.

Left over each month€0of €0 take-home

Rent
Internet
Mobile

Line-by-line breakdown and sources

Each month	€
Take-home payOECD Taxing Wages 2025, single, no children. Includes central and local income tax and employee social contributions; euro amounts at the ECB average for 2026-08.	outside the model's range
Rent, 60 m²€6.74/m² · official · e-stat.go.jp · 2023-12-31	− €405
Internet€32 · official · ドコモ光月額料金 · 2026-09-30	− €32
Mobile plan€22 · official · docomo mini 10GB · 2026-09-30	− €22
Other everyday billsnot published for this city: public transport pass, utilities	—
Left overbefore the bills this city does not publish	—

Take-home pay for other salaries and households Compare with another city Check a job offer in Kosai Salary needed to live in Kosai

Public employment service

No exact public employment office is currently linked to Kosai. The verified national service may still offer online registration, job search or an official office finder.

Country-level information

Hello Work — Public employment service

Ministry of Health, Labour and Welfare, Japan

Job Search

Search jobs

Open the Japan service overview

Country-level service information is not treated as proof of a physical office in Kosai. Sources checked through 10 Aug 2026.

Family and education

Metric	Value	Period	Source
Schools	14 schools	1 May 2024	MEXT School Basic Survey 2024 municipality table 000040231127⁹Official

Healthcare

Metric	Value	Period	Source
Hospital beds per 1,000 residents	5.66 per 1,000	31 Dec 2024	Japan official municipality health statistics 2024⁷Official
Physicians per 1,000 residents	0.999 per 1,000	31 Dec 2024	Japan official municipality health statistics 2024⁸Official
Physicians per 100,000 residents	102.7 per 100,000	2022	Exact e-Stat municipality row I6100 (医師数), derived with the exact same-JIS e-Stat A2301 total resident population row. No prefecture or parent-area value is used.⁴Official

Yes — migrants can receive medical care in Kosai when the national insurance or residence conditions are met.

Healthcare access follows the country-wide insurance rules; local capacity facts remain city data and are not used as proof of eligibility.

Open the official coverage guide

Physicians per 1,000 residents0.999 per 1,000Verified 2026-08-31

Country rule verified 2026-08-03.

Safety

Metric	Value	Period	Source
Recorded incidents per 100,000 residents	506.3 incidents per 100,000	31 Dec 2025	令和７年の犯罪情勢 / 令和７年の犯罪情勢統計表, 図表1-5-2¹⁷Official · regional context

Mobility and administration

Kosai's nearest airport was FSZ, 62 km away and offered 7 direct destinations.

Metric	Value	Period	Source
Direct destinations from the nearest major airport	7 count	3 Aug 2026	OpenFlights¹¹Official
Destinations from nearest airport	10 count	2024	Unique direct scheduled destination endpoints for the nearest scheduled-service airport in the complete 97-airport MLIT universe; domestic endpoints come from the official 2024 annual route table and international endpoints from the official 2024 summer and winter direct scheduled-flight tables.¹³Official
Distance to the nearest major airport	62 km	3 Aug 2026	OurAirports¹²Official
Nearest major airport (IATA code)	FSZ	3 Aug 2026	OurAirports¹²Official

Language courses and integration

No exact city-level course record is currently published for Kosai. These verified national programmes may still apply; use the official programme page to check local availability.

Country-level information

Japanese Language Education Program for Foreigners Living in Japan — State Language Course

Agency for Cultural Affairs

For foreigners living in Japan.

JapaneseIn Person, Online

Open official information

Open the full Japan section

National programme information is not treated as proof of a course location in Kosai.

Find courses near Kosai

Climate and air quality

Is the air quality good in Kosai?

The annual PM2.5 mean is 8.9 µg/m³ (2024) — above the WHO 2021 guideline of 5 µg/m³ but within the EU limit of 25 µg/m³. Source: MOE Japan Air Pollution Monitoring Report FY2023 — 湖西市¹⁰

Annual mean at the measuring site(s) serving the city; current-day readings differ.

Air quality vs health guidelinesAnnual means against WHO 2021 guidelines and EU legal limits

Within WHO 2021 guidelineAbove WHO, within EU limitAbove EU legal limitCity annual mean · µg/m³

PM2.58.9WHO 5 · EU 25

City values from the published air-quality observations. WHO 2021 guidelines and EU limit values are published constants.

PM2.5 across cities in JapanAnnual PM2.5 in Kosai is 8.9 µg/m³. Of 804 cities with data, 209 have annual PM2.5 of 8 to under 9 µg/m³.

183

209

167

4–55–66–77–88–99–1010–1111–1212–1313–14

Kosai 8.9

Annual PM2.5 (µg/m³)

Metric	Value	Period	Source
PM2.5 — annual mean	8.9 µg/m³country median 8.4	31 Mar 2024	MOE Japan Air Pollution Monitoring Report FY2023 — 湖西市¹⁰Official

Population and city profile

Population density was 668.7 people per km² at the end of 2020.

How many people live in Kosai?

The published population was 57,885 people in October 2020. Source: Japan 2020 Census municipality population table⁶

Who lives hereResidents by nationality, % of population

By nationality

National passport92.7%

Calculated from the population and foreign-resident facts on this page.

Metric	Value	Period	Source
City area	86.56 km²	3 Aug 2026	国土地理院 (Geospatial Information Authority of Japan)¹⁸Official
Foreign-resident share	7.5 %	3 Aug 2026	総務省自治行政局 (住民基本台帳, 外国人住民 ÷ 総計)²⁰Official
Foreign residents	4,248 people	3 Aug 2026	総務省自治行政局 (住民基本台帳, 外国人住民)²⁰Official
Population density	668.7 people/km²	31 Dec 2020	総務省統計局 (e-Stat, 国勢調査2020 第1-1表)⁶Official
Population	57,885 people	1 Oct 2020	Japan 2020 Census municipality population table⁶Official

International community in Kosai

Named groups from exact city-grain official distributions. Citizenship, birthplace, language and ancestry answer different questions and stay separate.

Citizenship

Persons in the official 2020 Population Census Basic Complete Tabulation on Population and Households; sex-total population by source-native nationality category. · 2020

Published group	People	Share
Total	57,885	100.0%
Japanese	54,565	94.3%
Foreigner	3,284	5.7%
Federative Republic of Brazil	1,812	3.1%
Republic of Peru	428	0.7%
Socialist Republic of Viet Nam	318	0.5%
Republic of Indonesia	209	0.4%
Republic of the Philippines	184	0.3%
People's Republic of China	136	0.2%
Others	108	0.2%
Nationality not reported	36	0.1%

Show 6 more groups

Published group	People	Share
Republic of Korea	34	0.1%
Kingdom of Thailand	22	0.0%
Federal Democratic Republic of Nepal	15	0.0%
United States of America	9	0.0%
India	8	0.0%
United Kingdom of Great Britain and Northern Ireland	1	0.0%

Largest published groups; zero-count groups are omitted. Dimensions are source-native and are never merged. Official source³

Additional context

Metric	Value	Period	Source
Median age	50.8 years	31 Dec 2026	2026 Resident Basic Register, population by age group by municipality (total residents)¹Official

Alternatives for people set on Kosai

Three places for the three reasons people leave a city on the shortlist: stay in the region, stay in the country, or keep the budget and change the country. A percentage appears only where both cities publish that metric from the same source, period and grain. Distances are straight lines — travel times are not collected yet.

Tahara as a Kosai alternative in the same region

25 km away, better on 3 of 7 metrics measured the same way, worse on 2.

Recorded crime, per 100k: 758 Tahara vs 506 Kosai+50%
Unemployment: 2.2% Tahara vs 4.2% Kosai−47%
Rent: €5.97/m² Tahara vs €6.74/m² Kosai−11%
Foreign residents: 4.1% Tahara vs 7.5% Kosai−46%
Annual PM2.5: 8.6 µg/m³ Tahara vs 8.9 µg/m³ Kosai−3%
Median gross pay, region: €292 Tahara vs €288 Kosaisame level
Residents: 59,360 Tahara vs 57,885 Kosai+3%

Full comparison More about Tahara

Kinokawa as a Kosai alternative in the same country

A move, not a commute, at 205 km, better on 4 of 6 metrics measured the same way, worse on 2.

Rent: €4.73/m² Kinokawa vs €6.74/m² Kosai−30%
Foreign residents: 1.2% Kinokawa vs 7.5% Kosai−84%
Unemployment: 3.3% Kinokawa vs 4.2% Kosai−23%
Recorded crime, per 100k: 448 Kinokawa vs 506 Kosai−11%
Median gross pay, region: €264 Kinokawa vs €288 Kosai−8%
Annual PM2.5: 7.5 µg/m³ Kinokawa vs 8.9 µg/m³ Kosai−16%

Full comparison More about Kinokawa

Cities near Kosai

Published cities within 25 km, nearest first. Distances are straight-line.

Toyohashi 14.0 km away

Rent: 6.83 EUR/m²/monthAverage net rent (nettokalt) · 2023-12-31

Hamamatsu 17.8 km away

Rent: 7.41 EUR/m²/monthAverage net rent (nettokalt) · 2023-12-31

Toyokawa 18.6 km away

Rent: 6.75 EUR/m²/monthAverage net rent (nettokalt) · 2023-12-31

Shinshiro 20.3 km away

Rent: 4.91 EUR/m²/monthAverage net rent (nettokalt) · 2023-12-31

Tahara 24.9 km away

Rent: 5.97 EUR/m²/monthAverage net rent (nettokalt) · 2023-12-31

Alternative cities in Japan

Other cities in Japan to compare with Kosai, nearest in population first.

All Japan cities

Sayama57,746 residents Sanyōonoda58,118 residents Minokamo57,649 residents Kitahiroshima58,171 residents Tobata-ku (Kitakyushu)57,494 residents Kinokawa58,287 residents

How does Kosai compare?

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Put Kosai's key facts on your site — a card with this page's figures and a link back, free under CC BY 4.0.

Common questions

Answered from the published values on this page, each with its source and date.

How many people live in Kosai?

The published population was 57,885 people in October 2020. Source: Japan 2020 Census municipality population table.

How much does it cost to rent in Kosai?

Average net cold rent is about 6.74 EUR/m² per month (2023 Housing and Land Survey), excluding heating and operating charges. For a 70 m² flat that is about 472 EUR a month before utilities. Source: www.e-stat.go.jp.

Is the air quality good in Kosai?

The annual PM2.5 mean is 8.9 µg/m³ (2024) — above the WHO 2021 guideline of 5 µg/m³ but within the EU limit of 25 µg/m³. Source: MOE Japan Air Pollution Monitoring Report FY2023 — 湖西市.

What is the unemployment rate in Kosai?

The unemployment rate is about 4.2 % (October 2020). Source: 総務省統計局 (e-Stat, 国勢調査2020 就業状態等基本集計第1-2表).

What is the typical salary around Kosai?

The median gross salary is 288 EUR/month. Source: www.e-stat.go.jp.

Is Kosai a good place to live?

Kosai may suit different people for different reasons. The page's profile scores compare published cost, work, housing, safety, healthcare and other available factors; they are a decision aid, not a universal recommendation.

Which cities are near Kosai?

Toyohashi, Hamamatsu, Toyokawa, Shinshiro, Tahara are near Kosai. Typed relationship labels are shown where published; other rows use straight-line distance from admitted coordinates.

How many people are in the Japanese citizenship group in Kosai?

The official citizenship distribution records 54,565 people (94.3%) in the source-defined population for 2020. This is a citizenship measure, not a general estimate of ethnicity or migration status.

Cite this page

Open a format to select or copy this ImmigrationDB compilation citation. The native disclosure and text fallback work without JavaScript.

APA citation

ImmigrationDB. (2026, October 16). Kosai, Japan: population, rent, salary, cost of living, jobs [ImmigrationDB compilation; version 4d8814f183ab1446c81e10b0a7c56a70]. ImmigrationDB. https://immigrationdb.com/cities/jp/kosai/ Retrieved 2026-10-16. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/

BibTeX citation

@misc{immigrationdb_immigrationdb_kosai-japan-population-rent-salary-cost-of-living-jobs_9b6b5eb8ec4a,
  author = {ImmigrationDB},
  title = {Kosai, Japan: population, rent, salary, cost of living, jobs},
  publisher = {ImmigrationDB},
  year = {2026},
  date = {2026-10-16},
  version = {4d8814f183ab1446c81e10b0a7c56a70},
  url = {https://immigrationdb.com/cities/jp/kosai/},
  note = {Retrieved 2026-10-16. ImmigrationDB compilation. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/},
}

Markdown citation

[Kosai, Japan: population, rent, salary, cost of living, jobs](https://immigrationdb.com/cities/jp/kosai/) — ImmigrationDB; ImmigrationDB; version 4d8814f183ab1446c81e10b0a7c56a70; retrieved 2026-10-16; built 2026-10-16.

This citation identifies the ImmigrationDB compilation/page. Underlying source publishers and datasets retain their own terms; inspect the Sources section and cite those records separately. View the underlying source records.

Sources

JSON Markdown

2026 Resident Basic Register, population by age group by municipality (total residents) e-stat.go.jp · checked 2026-09-24
docomo mini 10GB docomo.ne.jp · checked 2026-09-15
e-Stat / Statistics Bureau of Japan 2020 Population Census table 44-1 nationality e-stat.go.jp · checked 2026-09-01
Exact e-Stat municipality row I6100 (医師数), derived with the exact same-JIS e-Stat A2301 total resident population row. No prefecture or parent-area value is used. e-stat.go.jp · checked 2026-07-15
Housing and Land Survey 2023, Table 112-3-2: Monthly Rent of Dwelling by Type of Dwelling — Japan, prefecture, shi, ku, machi and mura Housing and Land Survey 2023, Table 112-3-2: Monthly Rent of Dwelling by Type of Dwelling · e-stat.go.jp · checked 2026-09-12
Japan 2020 Census municipality population table e-stat.go.jp · checked 2026-07-16
Japan official municipality health statistics 2024 mhlw.go.jp · checked 2026-08-13
Japan official municipality health statistics 2024 mhlw.go.jp · checked 2026-08-13
MEXT School Basic Survey 2024 municipality table 000040231127 e-stat.go.jp · checked 2026-07-16
MOE Japan Air Pollution Monitoring Report FY2023 — 湖西市 MOE Japan Air Pollution Monitoring Report FY2023 · env.go.jp · checked 2026-07-26

Show 16 more sources

OpenFlights raw.githubusercontent.com · checked 2026-08-03
OurAirports davidmegginson.github.io · checked 2026-08-03
Unique direct scheduled destination endpoints for the nearest scheduled-service airport in the complete 97-airport MLIT universe; domestic endpoints come from the official 2024 annual route table and international endpoints from the official 2024 summer and winter direct scheduled-flight tables. mlit.go.jp · checked 2026-07-15
www.e-stat.go.jp e-stat.go.jp · checked 2026-08-27
www.e-stat.go.jp e-stat.go.jp · checked 2026-08-27
ドコモ光月額料金 — NTTドコモドコモ光月額料金 · docomo.ne.jp · checked 2026-09-19
令和７年の犯罪情勢 / 令和７年の犯罪情勢統計表, 図表1-5-2 npa.go.jp · checked 2026-09-23
国土地理院 (Geospatial Information Authority of Japan) gsi.go.jp · checked 2026-08-03
総務省統計局 (e-Stat, 国勢調査2020 就業状態等基本集計第1-2表) e-stat.go.jp · checked 2026-08-03
総務省自治行政局 (住民基本台帳, 外国人住民) soumu.go.jp · checked 2026-08-03
Coordinate identity evidence wikidata.org · checked 2026-09-06
Wikidata identity and coordinates — Q185125 Wikidata identity and coordinates · wikidata.org · checked 2026-09-05
Wikidata identity and coordinates — Q336431 Wikidata identity and coordinates · wikidata.org · checked 2026-09-05
Wikidata identity and coordinates — Q389495 Wikidata identity and coordinates · wikidata.org · checked 2026-09-05
Wikidata identity and coordinates — Q694923 Wikidata identity and coordinates · wikidata.org · checked 2026-09-05
Wikidata identity and coordinates — Q850515 Wikidata identity and coordinates · wikidata.org · checked 2026-09-05

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