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Chōnan, Japan
Chiba · Japan
Chōnan is a small city in Chiba, Japan with a population of 7,743. Elevation: 135 ft (41 m). Average temperature: 63°F (17°C).
Data updated June 2026
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People
Economy
BHousing
A+Climate
| Population | 7,743 |
| Population Density | 243 / sq mi |
| Elevation | 135 ft (41 m) |
| Coordinates | 35.3970°, 140.2350° |
| Timezone | Asia/Tokyo |
| Country | 🇯🇵 Japan |
| State / Province | Chiba |
| Average Temperature | 63°F (17°C) |
| January Average | 42°F (6°C) |
| July Average | 82°F (28°C) |
| Annual Precipitation | 50.3 inches (1,277 mm) |
| Annual Snowfall | 0.5 inches (1 cm) |
| Median Household Income | $35,400 |
| Median Age | 47.5 years |
About Chōnan
Chōnan is a small city in Japan (Chiba) with a population of 7,743. The city sits at an elevation of 135 feet (41 meters) above sea level. The average annual temperature is 63°F (17°C). Temperatures range from 42°F in January to 82°F in July. Annual precipitation averages 50.3 inches. The timezone is Asia/Tokyo.
Population
Language Spoken at Home
Social Characteristics
Chōnan vs Japan Average
Income: Chōnan vs Japan
Commute Mode
Income
| Median HH Income | $35,400 |
| 53% below Japan avg |
Employment & Poverty
| Unemployment | 2.5% |
| 31% below Japan avg | |
| Establishments (County) | 248 |
Business (County)
Tax & Cost of Living
Commute & Transportation
Walkability
Home Value Sources
Ownership Split
Home Values
| Census Median | $102,000 |
| 64% below Japan avg |
Real Estate Market (Redfin)
Rental Costs
| Census Median Rent | $510 |
| 56% below Japan avg |
Ownership & Property
| Housing Units | 3,097 |
Property Tax
Climate in Chōnan
Chōnan 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 1542 mm.
Temperature
| Annual Average | 63.1°F |
| 17% above Japan avg | |
| January Average | 42°F (6°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 283 days/yr |
Geography
| Elevation | 135 ft (41 m) |
| Area | 31.9 sq mi (82.6 km²) |
| Population Density | 243/sq mi |
| Coordinates | 35.3970°N, 140.2350°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Tsunami History
20 tsunamis recorded within 500 km. Highest wave on record: 13.0 m (43 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1923 | SAGAMI BAY | Earthquake | 13.0 m | 105,385 | 75 km |
| 1703 | OFF SW BOSO PENINSULA | Earthquake | 11.7 m | 5,233 | 87 km |
| 1677 | OFF SE. BOSO PENINSULA | Earthquake | 8.0 m | 500 | 123 km |
| 1495 | KAMAKURA, SAGAMI BAY, TOKAIDO | Earthquake | 5.0 m | 200 | 75 km |
| 1732 | KUJUKURI BEACH, JAPAN | Earthquake | 2.0 m | - | 56 km |
| 1670 | BOSO, JAPAN | Earthquake | 2.0 m | - | 70 km |
| 1433 | OFF IZU-OSHIMA | Earthquake | 2.0 m | - | 87 km |
| 1980 | HONSHU ISLAND | Earthquake | 0.6 m | - | 116 km |
| 1923 | KASHIMA, JAPAN | Earthquake | 0.4 m | - | 142 km |
| 1978 | TOKAIDO | Earthquake | 0.4 m | 25 | 110 km |
| 1923 | RYUKYU ISLANDS | Earthquake | 0.3 m | - | 55 km |
| 1896 | KASHIMA, JAPAN | Earthquake | 0.3 m | - | 141 km |
| 1990 | JAPAN | Earthquake | 0.2 m | - | 118 km |
| 2000 | HONSHU: S COAST | Earthquake | 0.1 m | - | 149 km |
| 1855 | TOKAIDO | Earthquake | - | 6,757 | 48 km |
| 1782 | ODAWARA, SAGAMI BAY | Eruption + Earthquake | - | - | 59 km |
| 1642 | BOSO, JAPAN | Earthquake | - | - | 40 km |
| 1633 | SAGAMI BAY | Earthquake | - | 150 | 97 km |
| 1602 | BOSO, JAPAN | Eruption + Earthquake | - | - | 41 km |
| 1257 | SAGAMI BAY, JAPAN | Earthquake | - | - | 70 km |
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Izu-Oshima (107 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Izu-Oshima | Stratovolcano | 758 m (2,487 ft) | 1990 | 107 km |
| Hakoneyama | Complex | 1,438 m (4,718 ft) | 2015 | 112 km |
| Izu-Tobu | Pyroclastic cone(s) | 1,406 m (4,613 ft) | 1989 | 117 km |
| Toshima | Stratovolcano | 508 m (1,667 ft) | -4550 | 131 km |
| Fujisan | Stratovolcano | 3,776 m (12,388 ft) | 1708 | 137 km |
| Niijima | Lava dome(s) | 432 m (1,417 ft) | 886 | 142 km |
| Miyakejima | Stratovolcano | 775 m (2,543 ft) | 2010 | 159 km |
| Akagisan | Stratovolcano | 1,828 m (5,997 ft) | Unknown | 160 km |
| Kozushima | Lava dome(s) | 572 m (1,877 ft) | 838 | 164 km |
| Nantaisan | Stratovolcano | 2,486 m (8,156 ft) | -9540 | 166 km |
| Omanago Group | Lava dome(s) | 2,341 m (7,680 ft) | -3050 | 169 km |
| Takaharayama | Stratovolcano | 1,795 m (5,889 ft) | -4570 | 172 km |
| Harunasan | Stratovolcano | 1,449 m (4,754 ft) | 550 | 173 km |
| Nikko-Shiranesan | Shield | 2,578 m (8,458 ft) | 1952 | 174 km |
| Mikurajima | Stratovolcano | 851 m (2,792 ft) | -4100 | 179 km |
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 2.4 in | |
| February | 41°F (5°C) | 3.3 in | Coldest |
| March | 47°F (8°C) | 5.0 in | |
| April | 56°F (14°C) | 5.2 in | |
| May | 64°F (18°C) | 5.3 in | |
| June | 69°F (21°C) | 7.1 in | |
| July | 82°F (28°C) | 4.8 in | Warmest |
| August | 79°F (26°C) | 5.4 in | |
| September | 73°F (23°C) | 8.0 in | |
| October | 64°F (18°C) | 8.0 in | Wettest |
| November | 54°F (12°C) | 4.6 in | |
| December | 45°F (7°C) | 2.4 in | Driest |
Chōnan has a seasonal temperature swing of 40°F / from 41°F in February to 82°F in July. Total annual precipitation is 61.5 inches, with October being the wettest month (8.0") and December the driest (2.4").
Schools in Chōnan
13 public schools (NCES 2022-23 data).
| School | Level | Enrollment | Teachers | Student/Teacher |
|---|---|---|---|---|
| 市原市立内田小学校 | - | - | - | - |
| 市原市立南総中学校 | - | - | - | - |
| 市原市立牛久小学校 | - | - | - | - |
| 市立高滝小学校 | - | - | - | - |
| 市原市立鶴舞小学校 | - | - | - | - |
| 町立東小学校 | - | - | - | - |
| 町立西小学校 | - | - | - | - |
| 町立豊栄小学校 | - | - | - | - |
| 長南町立長南中学校 | - | - | - | - |
| 長南町立長南小学校 | - | - | - | - |
| 千葉県立市原高等学校 | - | - | - | - |
| 県立鶴舞桜が丘高等学校 | - | - | - | - |
| 県立鶴舞桜が丘高等学校 | - | - | - | - |
Radio Stations near Chōnan
2 stations within ~55 km.
| Station | Genre | Quality | |
|---|---|---|---|
| NHK-FM | classical, jpop | AAC+ 52 kbps | |
| Japan Hits - asia DREAM radio | j-pop, japanese | MP3 128 kbps |
Museums in Chōnan
| Name | Type | Address | Phone | Annual Revenue |
|---|---|---|---|---|
| Art House Asobara no Tani | ||||
| Chiba City Floral Museum | ||||
| Chiba City Municipal Museum (Chiba Castle) | ||||
| Chiba City Museum of Art | ||||
| Chiba City Museum of Science | ||||
| Ichihara Lakeside Museum | ||||
| Inage Private Aviation Museum | ||||
| Marines Museum | ||||
| Natural History Museum and Institute | ||||
| Sardine Exhibition Room | ||||
| Zoo Museum | ||||
| アクアラインなるほど館 | ||||
| いすみ市郷土資料館（田園の美術館） | ||||
| 九十九里いわし博物館 | ||||
| 千葉市立 加曽利貝塚博物館 | ||||
| 千葉県いすみ環境と文化のさとセンター | ||||
| 千葉県立中央博物館大多喜城分館 | ||||
| 千葉県立美術館 | ||||
| 史跡上総国分尼寺跡展示館 | ||||
| 史跡長柄横穴群資料館 | ||||
| 君津市立久留里城址資料館 | ||||
| 商い資料館 | ||||
| 国際上総埴生美術館 | ||||
| 城西国際大学水田美術館 | ||||
| 大多喜町 天然ガス記念館 | ||||
| 山武市歴史民俗資料館 | ||||
| 市原市水と彫刻の丘 | ||||
| 御宿町歴史民俗資料館 | ||||
| 房総中央鉄道館 | ||||
| 房総郷土美術館 | ||||
| 月の砂漠記念館 | ||||
| 森林博物資料館 | ||||
| 清澄寺霊宝殿 | ||||
| 片倉ダム記念館 | ||||
| 白子町歴史民俗資料室 | ||||
| 睦沢町立歴史民俗資料館 | ||||
| 研修館 | ||||
| 茂原市立美術館・郷土資料館 | ||||
| 袖ケ浦市郷土博物館 | ||||
| 釜屋 | ||||
| 長南町郷土資料館 | ||||
| 麻雀博物館 | ||||
| 黒汐資料館 |
Libraries in Chōnan
| Name | Address | Staff | Annual Visits | Circulation | Collection | Programs |
|---|---|---|---|---|---|---|
| Chiba City Central Library | 0.0 | |||||
| Chiba City Central Library | 0.0 | |||||
| さんぶの森図書館 (3F) | 0.0 | |||||
| ちばぎんざ図書館 | 0.0 | |||||
| ちばぎんざ図書館 | 0.0 | |||||
| 勝浦市立図書館 | 0.0 | |||||
| 千葉市みやこ図書館 | 0.0 | |||||
| 千葉市みやこ図書館 | 0.0 | |||||
| 千葉市みやこ図書館白旗分館 | 0.0 | |||||
| 千葉市みやこ図書館白旗分館 | 0.0 | |||||
| 千葉市みやこ図書館白旗分館 | 0.0 | |||||
| 千葉市みやこ図書館白旗分館 | 0.0 | |||||
| 千葉市稲毛図書館 | 0.0 | |||||
| 千葉市稲毛図書館 | 0.0 | |||||
| 千葉市緑図書館 | 0.0 | |||||
| 千葉市緑図書館 | 0.0 | |||||
| 千葉市緑図書館 | 0.0 | |||||
| 千葉市緑図書館あすみが丘分館 | 0.0 | |||||
| 千葉市緑図書館土気図書室 | 0.0 | |||||
| 千葉市美浜図書館 | 0.0 | |||||
| 千葉市美浜図書館 | 0.0 | |||||
| 千葉市美浜図書館打瀬分館 | 0.0 | |||||
| 千葉市美浜図書館打瀬分館 | 0.0 | |||||
| 千葉市美浜図書館打瀬分館 | 0.0 | |||||
| 千葉市若葉図書館西都賀分館 | 0.0 | |||||
| 千葉市若葉図書館西都賀分館 | 0.0 | |||||
| 千葉県文書館 | 0.0 | |||||
| 千葉県立 中央図書館 | 0.0 | |||||
| 千葉県立 中央図書館 | 0.0 | |||||
| 図書館 | 0.0 | |||||
| 図書館 | 0.0 | |||||
| 大多喜町立大多喜図書館天賞文庫 | 0.0 | |||||
| 大網白里市図書室 | 0.0 | |||||
| 大網白里市図書室中部分室 | 0.0 | |||||
| 大網白里市図書室白里分室 | 0.0 | |||||
| 市原市立中央図書館 | 0.0 | |||||
| 成東図書館 | 0.0 | |||||
| 東金市立東金図書館 | 0.0 | |||||
| 松尾町図書館 | 0.0 | |||||
| 水田記念図書館 | 0.0 | |||||
| 袖ケ浦市立平岡公民館図書室 | 0.0 | |||||
| 袖ケ浦市立平川図書館 | 0.0 | |||||
| 袖ケ浦市立根形公民館図書室 | 0.0 | |||||
| 袖ケ浦市立長浦おかのうえ図書館 | 0.0 | |||||
| 附属図書館 | 0.0 | |||||
| 附属図書館 | 0.0 |
Farmers Markets in Chōnan
| Name | Address | Season | Hours | Organic | Website |
|---|---|---|---|---|---|
| Landrome | |||||
| Shigenoya Food Market | |||||
| Shigenoya Food Market | |||||
| 下田農業ふれあい館 | |||||
| 下田農業ふれあい館 | |||||
| 千葉市中央卸売市場 (Chiba City Central Wholesale Market) |
Restaurants in Chōnan
3 restaurants within city radius - OpenStreetMap data
Zoos in Chōnan
2 zoos within city radius - OpenStreetMap data
Dentists in Chōnan
1 dentists within city radius - OpenStreetMap data
Train Stations in Chōnan
5 train stations within city radius - OpenStreetMap data
Bus Stations in Chōnan
1 bus stations within city radius - OpenStreetMap data
Gas Stations in Chōnan
4 gas stations within city radius - OpenStreetMap data
Golf Courses in Chōnan
13 golf courses within city radius - OpenStreetMap data
Stadiums & Teams in Chōnan
| Team | League | Division |
|---|---|---|
Airports Near Chōnan
25 airports within the area.
| Airport | IATA | Type |
|---|---|---|
| Narita International Airport | NRT | Large Airport |
| Tokyo Haneda International Airport | HND | Large Airport |
| Chofu Airport | - | Medium Airport |
| JGSDF Kisarazu Airfield | - | Medium Airport |
| JMSDF Shimofusa Air Base | - | Medium Airport |
| JMSDF Tateyama Air Base | - | Medium Airport |
| Bando Auxiliary Airfield | - | Small Airport |
| Chiyoda Auxiliary Airstrip | - | Small Airport |
| Haneda Gliderport | - | Small Airport |
| Honda Airport | - | Small Airport |
| Hoshubana Gliderport | - | Small Airport |
| Iwabuchi Watergate Auxiliary Airfield | - | Small Airport |
| JGSDF Kasumigaura Airfield | - | Small Airport |
| JGSDF Narashino Airfield | - | Small Airport |
| Kisarazu Nakajima Auxiliary Airfield / Kisarazu Heliport | - | Small Airport |
| Kozaki Airfield | - | Small Airport |
| Mint Airstrip | - | Small Airport |
| Namiki Auxiliary Airfield | - | Small Airport |
| Otone Airfield | - | Small Airport |
| Ryugasaki Airfield | - | Small Airport |
| Sekiyado Gliderport | - | Small Airport |
| Tokyo Flight Park Moriya Airstrip | - | Small Airport |
| Tokyo Flying Club Airstrip | - | Small Airport |
| Urayasu Emergency Runway | - | Small Airport |
| Yuhikoku Kawajima Airstrip | - | Small Airport |
Post Offices in Chōnan
8 post offices.
| Post Office | Address |
|---|---|
| Chonan Post Office | |
| Chonannishi Post Office | |
| Ichihara Tsurumai Post Office | |
| Ichihara Ushiku Post Office | |
| Kyuden Post Office | |
| Takataki Post Office | |
| Toyosaka Post Office | |
| Uchida Summary Post Office |
Treatment Centers in Chōnan
4 treatment centers.
| Center | Type | Phone |
|---|---|---|
| Mihama Hospital | ||
| 海浜外科内科 | ||
| 海浜整形外科 | ||
| 高根産婦人科 |
Churches & Religious Organizations in Chōnan
8 religious organizations (IRS tax-exempt data).
| Name | Address |
|---|---|
| Bando No.31 Kasamori-ji | |
| Ishigami Shrine | |
| 八幡神社 | |
| 報恩寺 | |
| 熊野神社 | |
| 熊野神社 | |
| 西光寺 | |
| 長福寿寺 |
Quick Facts
🇯🇵 About Japan
Public Holidays in Japan
16 public holidays this year
Frequently Asked Questions About Chōnan
What is the population of Chōnan?
Chōnan has a population of 7,743 residents and is located in Japan. The population density is 243 people per square mile, spread across 31.9 square miles. The median age of residents is 47.5 years, which is older than the national median of 38.9 years.
Is Chōnan expensive to live in?
The median household income is $35,400, 53% below the national average of $75,149. The median home value is $102,000 (64% below the U.S. median). Renters pay a median of $510 per month, below the national average of $1,163. The home price-to-income ratio is 2.9x, indicating housing is reasonably affordable relative to local income levels.
What is the weather like in Chōnan?
Chōnan enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winter temperatures average 42°F in January, while summers reach an average of 82°F in July. The area receives 283 sunny days per year, well above the national average of 205. Annual rainfall totals 50.3 inches.
How is the job market in Chōnan?
The job market in Chōnan is very strong, with unemployment at just 2.5% / well below the national rate of 3.6%. There are 248 business establishments in the area.
How much does housing cost in Chōnan?
The median home value in Chōnan is $102,000. For renters, the median monthly rent is $510.