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Isa, Japan
Kagoshima · Japan
Isa is a small city in Kagoshima, Japan with a population of 24,453. Elevation: 600 ft (183 m). Average temperature: 58°F (15°C).
Data updated June 2026
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About Isa
Isa is a city located in Kagoshima Prefecture, Japan. As of 1 July 2024, the city had an estimated population of 22,998 in 12567 households, and a population density of 59 persons per km2. The total area of the city is 392.56 km2 (151.57 sq mi).
People
Economy
BHousing
A+Climate
| Population | 24,453 |
| Population Density | 149 / sq mi |
| Elevation | 600 ft (183 m) |
| Coordinates | 32.0672°, 130.6118° |
| Timezone | Asia/Tokyo |
| Country | 🇯🇵 Japan |
| State / Province | Kagoshima |
| Average Temperature | 58°F (15°C) |
| January Average | 39°F (4°C) |
| July Average | 76°F (25°C) |
| Annual Precipitation | 98.9 inches (2,511 mm) |
| Annual Snowfall | 0.0 inches (0 cm) |
| Median Household Income | $26,600 |
| Median Age | 50.0 years |
About Isa
Isa is a small city in Japan (Kagoshima) with a population of 24,453. The city sits at an elevation of 600 feet (183 meters) above sea level. The average annual temperature is 58°F (15°C). Temperatures range from 39°F in January to 76°F in July. Annual precipitation averages 98.9 inches. The timezone is Asia/Tokyo.
Population
Language Spoken at Home
Social Characteristics
Isa vs Japan Average
Income: Isa vs Japan
Commute Mode
Income
| Median HH Income | $26,600 |
| 65% below Japan avg |
Employment & Poverty
| Unemployment | 2.6% |
| 28% below Japan avg | |
| Establishments (County) | 782 |
Business (County)
Tax & Cost of Living
Commute & Transportation
Walkability
Home Value Sources
Ownership Split
Home Values
| Census Median | $64,000 |
| 77% below Japan avg |
Real Estate Market (Redfin)
Rental Costs
| Census Median Rent | $320 |
| 72% below Japan avg |
Ownership & Property
| Housing Units | 9,781 |
Property Tax
Climate in Isa
Isa has an average annual temperature of 0°C (32°F). The hottest month is Jan (0°C), the coldest is Jan (0°C). Average annual precipitation is 2256 mm.
Temperature
| Annual Average | 58.2°F |
| 8% above Japan avg | |
| January Average | 39°F (4°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 176 days/yr |
Geography
| Elevation | 600 ft (183 m) |
| Area | 163.6 sq mi (423.8 km²) |
| Population Density | 149/sq mi |
| Coordinates | 32.0672°N, 130.6118°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Tsunami History
20 tsunamis recorded within 500 km. Highest wave on record: 55.0 m (180 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1792 | SHIMABARA BAY, KYUSHU ISLAND | Landslide | 55.0 m | 15,000 | 81 km |
| 1780 | SW. KYUSHU ISLAND | Astronomical | 6.0 m | - | 53 km |
| 1662 | HIUGANADA | Earthquake | 5.0 m | 200 | 137 km |
| 1914 | SEIKAIDO | Eruption | 3.0 m | 63 | 54 km |
| 1769 | SW. KYUSHU ISLAND | Earthquake | 2.5 m | - | 133 km |
| 1941 | SEIKAIDO | Earthquake | 1.2 m | 2 | 141 km |
| 1939 | SEIKAIDO | Earthquake | 0.8 m | 1 | 133 km |
| 1931 | SEIKAIDO | Earthquake | 0.8 m | 1 | 141 km |
| 1961 | SEIKAIDO | Earthquake | 0.7 m | 2 | 124 km |
| 1996 | KYUSHU ISLAND | Earthquake | 0.6 m | - | 83 km |
| 2024 | HYUGANADA SEA | Earthquake | 0.5 m | - | 95 km |
| 1970 | SEIKAIDO | Earthquake | 0.3 m | - | 104 km |
| 1899 | SEIKAIDO | Earthquake | 0.3 m | - | 132 km |
| 2025 | HYUGANADA SEA | Earthquake | 0.2 m | - | 95 km |
| 1996 | SEA OF JAPAN | Earthquake | 0.2 m | - | 73 km |
| 1984 | KYUSHU, JAPAN | Earthquake | 0.2 m | - | 130 km |
| 1969 | RYUKYU ISLANDS | Earthquake | 0.1 m | - | 141 km |
| 1987 | KYUSHU ISLAND | Earthquake | 0.0 m | 2 | 116 km |
| 1828 | AMAKUSA SEA | Earthquake | - | - | 89 km |
| 1781 | SW. KYUSHU ISLAND | Astronomical | - | 38 | 54 km |
Nearby Volcanoes
11 volcanoes within 200 km. Closest: Kirishimayama (28 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Kirishimayama | Shield | 1,700 m (5,577 ft) | 2018 | 28 km |
| Yonemaru-Sumiyoshiike | Maar(s) | 40 m (131 ft) | -6200 | 33 km |
| Aira | Caldera | 1,117 m (3,665 ft) | 2020 | 53 km |
| Unzendake | Complex | 1,483 m (4,865 ft) | 1996 | 83 km |
| Ata | Caldera(s) | 924 m (3,031 ft) | 885 | 94 km |
| Asosan | Caldera | 1,592 m (5,223 ft) | 2020 | 102 km |
| Kujusan | Stratovolcano(es) | 1,791 m (5,876 ft) | 1996 | 128 km |
| Kikai | Caldera | 704 m (2,310 ft) | 2020 | 145 km |
| Yufu-Tsurumi | Lava dome(s) | 1,584 m (5,197 ft) | 867 | 154 km |
| Fukue | Shield(s) | 315 m (1,033 ft) | -400 | 178 km |
| Kuchinoerabujima | Stratovolcano(es) | 657 m (2,156 ft) | 2020 | 185 km |
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 39°F (4°C) | 3.4 in | Coldest |
| February | 41°F (5°C) | 4.4 in | |
| March | 47°F (8°C) | 6.6 in | |
| April | 56°F (13°C) | 8.8 in | |
| May | 63°F (17°C) | 10.2 in | |
| June | 70°F (21°C) | 18.2 in | Wettest |
| July | 76°F (25°C) | 17.8 in | |
| August | 77°F (25°C) | 10.1 in | Warmest |
| September | 72°F (22°C) | 8.6 in | |
| October | 63°F (17°C) | 4.6 in | |
| November | 53°F (11°C) | 3.5 in | |
| December | 43°F (6°C) | 2.8 in | Driest |
Isa has a seasonal temperature swing of 39°F / from 39°F in January to 77°F in August. Total annual precipitation is 98.9 inches, with June being the wettest month (18.2") and December the driest (2.8").
Schools in Isa
13 public schools (NCES 2022-23 data).
| School | Level | Enrollment | Teachers | Student/Teacher |
|---|---|---|---|---|
| 伊佐市立大口南中学校 | - | - | - | - |
| 市立山野小学校 | - | - | - | - |
| 市立平出水小学校 | - | - | - | - |
| 市立曽木小学校 | - | - | - | - |
| 市立牛尾小学校 | - | - | - | - |
| 市立羽月北小学校 | - | - | - | - |
| 市立羽月小学校 | - | - | - | - |
| 市立羽月西小学校 | - | - | - | - |
| 鹿児島県立大口高等学校 | - | - | - | - |
| 大口明光学園高等学校・中学校 | - | - | - | - |
| 伊佐市立大口小学校 | - | - | - | - |
| 伊佐市立曽木小学校 | - | - | - | - |
| 鹿児島県立大口高等学校 | - | - | - | - |
Radio Stations near Isa
0 stations within ~55 km.
| Station | Genre | Quality |
|---|
Museums in Isa
| Name | Type | Address | Phone | Annual Revenue |
|---|---|---|---|---|
| えびの市歴史民俗資料館 | ||||
| さつま町ふるさと薩摩の館 | ||||
| つなぎ美術館 | ||||
| 人吉城歴史館 | ||||
| 人吉海軍航空基地資料館 | ||||
| 人吉海軍航空基地資料館 | ||||
| 人吉鉄道ミュージアム MOZOCAステーション868 | ||||
| 伊佐市大口歴史民俗鉄道資料館 | ||||
| 伊佐市歴史民俗鉄道記念資料館 | ||||
| 国立水俣病総合研究センター 水俣病情報センター | ||||
| 宮之城伝統工芸センター | ||||
| 宮之城歴史資料センター | ||||
| 山の中の海軍の町 にしき ひみつ基地ミュージアム | ||||
| 山の中の海軍の町 にしき ひみつ基地ミュージアム | ||||
| 日本画美術記念館「草文」 | ||||
| 水俣市立 水俣病資料館 | ||||
| 熊本県環境センター | ||||
| 鉄道資料館 | ||||
| 霧島市立横川郷土館 | ||||
| 霧島歴史民俗資料館 | ||||
| 鹿児島県霧島アートの森 |
Libraries in Isa
| Name | Address | Staff | Annual Visits | Circulation | Collection | Programs |
|---|---|---|---|---|---|---|
| えびの市民図書館 | 0.0 | |||||
| くりの図書館 | 0.0 | |||||
| 人吉市図書館 | 0.0 | |||||
| 伊佐市立大口図書館 | 0.0 | |||||
| 水俣市立図書館 | 0.0 | |||||
| 芦北町図書館 | 0.0 | |||||
| 菱刈町立図書館 | 0.0 | |||||
| 薩摩川内市立図書館祁答院分館 | 0.0 | |||||
| 錦町図書館 | 0.0 | |||||
| 錦町図書館 | 0.0 |
Farmers Markets in Isa
| Name | Address | Season | Hours | Organic | Website |
|---|---|---|---|---|---|
| 吉無田商店 | |||||
| 横川物産館 |
Hotels in Isa
2 hotels within city radius - OpenStreetMap data
Restaurants in Isa
4 restaurants within city radius - OpenStreetMap data
Cafes in Isa
1 cafes within city radius - OpenStreetMap data
Dentists in Isa
1 dentists within city radius - OpenStreetMap data
Gas Stations in Isa
4 gas stations within city radius - OpenStreetMap data
Ski Resorts Near Isa
1 ski resorts within range.
| Resort | Slopes (km) | Lifts | Peak (m) | Price | Season | Night | Park |
|---|---|---|---|---|---|---|---|
| Gokase Highland Ski Area | 0.0 | - | - | $0 | - | - | - |
Airports Near Isa
5 airports within the area.
| Airport | IATA | Type |
|---|---|---|
| Kagoshima Airport | KOJ | Large Airport |
| Amakusa Airport | AXJ | Medium Airport |
| JMSDF Kanoya Air Base | - | Medium Airport |
| Shirakawa Gliderport | - | Small Airport |
| Taragi Auxiliary Airfield | - | Small Airport |
Post Offices in Isa
14 post offices.
| Post Office | Address |
|---|---|
| ヤマト運輸伊佐営業所（大口） | |
| 上八坂簡易郵便局 | |
| 大口西本町簡易郵便局 | |
| 大口郵便局 | |
| 太田簡易郵便局 | |
| 小木原簡易郵便局 | |
| 山野郵便局 | |
| 平出水簡易郵便局（一時閉鎖中） | |
| 牛尾郵便局 | |
| 羽月郵便局 | |
| 羽月駅前簡易郵便局 | |
| 西太良郵便局 | |
| 西羽月簡易郵便局 | |
| 針持郵便局 |
Churches & Religious Organizations in Isa
6 religious organizations (IRS tax-exempt data).
| Name | Address |
|---|---|
| 愛宕神社 | |
| 曽木瀧之神社 | |
| 熊野神社 | |
| 諏訪神社 | |
| 諏訪神社 | |
| 郡山八幡神社 |
Quick Facts
🇯🇵 About Japan
Public Holidays in Japan
16 public holidays this year
Frequently Asked Questions About Isa
What is the population of Isa?
Isa has a population of 24,453 residents and is located in Japan. The population density is 149 people per square mile, spread across 163.6 square miles. The median age of residents is 50.0 years, which is older than the national median of 38.9 years.
Is Isa expensive to live in?
The median household income is $26,600, 65% below the national average of $75,149. The median home value is $64,000 (77% below the U.S. median). Renters pay a median of $320 per month, below the national average of $1,163. The home price-to-income ratio is 2.4x, indicating housing is reasonably affordable relative to local income levels.
What is the weather like in Isa?
Isa enjoys a temperate climate with an average annual temperature of 58°F (15°C). Winter temperatures average 39°F in January, while summers reach an average of 76°F in July. The area receives 176 sunny days per year, below the national average of 205. Annual rainfall totals 98.9 inches.
How is the job market in Isa?
The job market in Isa is very strong, with unemployment at just 2.6% / well below the national rate of 3.6%. There are 782 business establishments in the area.
How much does housing cost in Isa?
The median home value in Isa is $64,000. For renters, the median monthly rent is $320.