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Koumibara, Japan

Nagano · Japan

Koumibara is a small town in Nagano, Japan with a population of 4,353. Elevation: 3,615 ft (1,102 m). Average temperature: 45°F (7°C).

4.2 /5.0
A Great
4,353 Population 67/sq mi density
3,615 ft Elevation 1,102 meters
45°F Avg Temperature 7°C
59.0 in Annual Rain
Asia / Tokyo Timezone
$30,100 Median Income
A
Overall
4.2 / 5.0
Great overall score based on economy, affordability, safety and education
B
Economy
3.3 / 5.0
$30,100 median income, 2.1% unemployment
A+
Affordability
5.0 / 5.0
$76,000 home value, $380/mo rent

Discover Koumibara, Japan

Explore over 40 sections covering people, economy, housing, health, crime, climate, community, costs, trends, schools, colleges, hospitals, treatment centers, industries, museums, libraries, breweries, farmers markets, grocery stores, pharmacies, campgrounds, parks, trails, stadiums, ski resorts, daycare centers, nursing homes, churches, fire stations, cell towers, bridges, power plants, EV stations, prisons, radio stations, airports, police stations, post offices, Amtrak stations, superfund sites, UNESCO sites, and more.
Use the tabs and dropdown menus below to navigate every data point we track for this city.

Full City Profile

People

Population4,353
Median Age50.0 yrs
Density67/mi²

Economy

B
Median Income$30,100
Unemployment2.1%

Housing

A+
Home Value$76,000
Rent$380
Housing Units1,741

Climate

Avg Temp45°F (7°C)
Rain59.0 in/yr
Sunny Days229/yr
Elevation3,615 ft (1,102 m)
Population4,353
Population Density67 / sq mi
Elevation3,615 ft (1,102 m)
Coordinates36.0557°, 138.4782°
TimezoneAsia/Tokyo
Country🇯🇵 Japan
State / ProvinceNagano
Average Temperature45°F (7°C)
January Average24°F (-5°C)
July Average66°F (19°C)
Annual Precipitation59.0 inches (1,498 mm)
Annual Snowfall7.9 inches (20 cm)
Median Household Income$30,100
Median Age50.0 years

About Koumibara

Koumibara is a small town in Japan (Nagano) with a population of 4,353. The city sits at an elevation of 3,615 feet (1,102 meters) above sea level. The average annual temperature is 45°F (7°C). Temperatures range from 24°F in January to 66°F in July. Annual precipitation averages 59.0 inches. The timezone is Asia/Tokyo.

Koumibara has a population of 4,353 with a density of 67 people per square mile, spread across 65.1 square miles. The median age is 50.0 years, 29% older than the national median of 38.9.

Population

4,353
Total Population
67
People / sq mi
50.0yrs
Median Age
29% above Japan avg
65.1mi²
Land Area

Language Spoken at Home

Other Languages 100.0%

Social Characteristics

Koumibara vs Japan Average

The median household income in Koumibara is $30,100, which is 60% below the national average of $75,149. The unemployment rate is 2.1% (below the 3.6% US average). The area has 139 business establishments.

Income: Koumibara vs Japan

Commute Mode

Income

Median HH Income$30,100
60% below Japan avg

Employment & Poverty

Unemployment2.1%
42% below Japan avg
Establishments (County)139

Business (County)

Tax & Cost of Living

Commute & Transportation

Walkability

The median home value in Koumibara is $76,000, 73% below the national median of $281,900. Monthly rent averages $380 (67% below the national average of $1,163). There are 1,741 total housing units in the city. The home price-to-income ratio is 2.5x, well within the affordable range.

Home Value Sources

Ownership Split

Home Values

Census Median$76,000
73% below Japan avg

Real Estate Market (Redfin)

Rental Costs

Census Median Rent$380
67% below Japan avg

Ownership & Property

Housing Units1,741

Property Tax

Climate in Koumibara

Koumibara 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 1286 mm.

Month Avg °C / °F Min / Max °C Rain (mm)
Jan 0°C / 32°F — / — 31.0
Feb 0°C / 32°F — / — 44.3
Mar 0°C / 32°F — / — 62.5
Apr 0°C / 32°F — / — 83.2
May 0°C / 32°F — / — 111.2
Jun 0°C / 32°F — / — 170.4
Jul 0°C / 32°F — / — 186.3
Aug 0°C / 32°F — / — 160.3
Sep 0°C / 32°F — / — 195.3
Oct 0°C / 32°F — / — 155.9
Nov 0°C / 32°F — / — 50.4
Dec 0°C / 32°F — / — 35.1
Koumibara has a cool climate with an average annual temperature of 45°F (7°C). Winters average 24°F in January while summers reach 66°F in July. The area gets 229 sunny days per year, above the national average. Annual precipitation totals 59.0 inches (wetter than the 38-inch national average). The area receives 7.9 inches of snow annually. The city sits at an elevation of 3,615 feet.

Temperature

24°F Jan (-5°C) 66°F Jul (19°C)
Annual Average45.3°F
16% below Japan avg
January Average24°F (-5°C)
July Average66°F (19°C)
Sunny Days229 days/yr

Geography

Elevation3,615 ft (1,102 m)
Area65.1 sq mi (168.7 km²)
Population Density67/sq mi
Coordinates36.0557°N, 138.4782°W
TimezoneAsia/Tokyo

Precipitation & Snow

Annual Rainfall 59.0"
55% above Japan avg
Snowfall 7.9"
Wettest Month (Sep) 8.78"
Driest Month (Dec) 1.18"

Air Quality

Earthquake History

935 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.2. Most recent: M4.1 on Aug 23, 2025.

Aug 10, 2009 8 km NE of Sagara, Japan M6.2 147 km
Mar 11, 2011 13 km E of Arai, Japan M6.2 107 km
Mar 15, 2011 6 km NNW of Fujinomiya, Japan M6.0 88 km
Jan 15, 2007 15 km WSW of Heda, Japan M5.9 130 km
Jul 23, 2005 9 km WSW of Ichihara, Japan M5.9 149 km
Apr 16, 2011 6 km ENE of Tanuma, Japan M5.8 111 km
Feb 25, 2013 29 km NE of Numata, Japan M5.8 111 km
Feb 1, 1992 4 km SSE of Miura, Japan M5.8 149 km
Mar 11, 2011 eastern Honshu, Japan M5.7 100 km
Mar 6, 1996 13 km NNE of Gotenba, Japan M5.6 83 km
May 3, 1998 14 km SW of It?, Japan M5.6 140 km
Nov 9, 2013 3 km WSW of Moriya, Japan M5.6 135 km
Mar 4, 1997 9 km SSW of It?, Japan M5.6 139 km
Apr 20, 2006 16 km SE of It?, Japan M5.6 149 km
Dec 21, 1996 3 km E of Sugito, Japan M5.5 116 km
Feb 15, 2005 2 km NNW of Iwatsuki, Japan M5.5 109 km
Mar 15, 2012 3 km ENE of ?me, Japan M5.5 77 km
Jul 15, 2011 5 km NE of Sakai, Japan M5.5 124 km
Aug 15, 1998 22 km WSW of Hotaka, Japan M5.5 79 km
Apr 11, 2011 8 km WSW of Iiyama, Japan M5.5 86 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

33 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 3. Most recent: Faxai (2019).

Year Name Category Closest
2019 Faxai Category 3 139 km
2019 Hagibis Category 2 97 km
2018 Jebi Category 1 217 km
2018 Shanshan Category 1 276 km
2018 Jongdari Category 1 207 km
2016 Mindulle Category 1 216 km
2014 Phanfone Category 1 129 km
2011 Roke Category 2 67 km
2009 Melor Category 1 286 km
2007 Fitow Category 1 83 km
2005 Mawar Category 2 141 km
2004 Ma-on Category 3 121 km
2004 Chaba Category 1 261 km
2003 Etau Category 1 212 km
2002 Higos Category 2 129 km
2001 Danas Category 1 131 km
2000 Kirogi Category 1 218 km
1998 Vicki Category 2 113 km
1998 Zeb Category 1 254 km
1998 Stella Category 1 111 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

12 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 105,385 141 km
1495 KAMAKURA, SAGAMI BAY, TOKAIDO Earthquake 5.0 m 200 141 km
2009 HONSHU: S COAST Earthquake 0.6 m 1 147 km
1857 TOKAIDO Earthquake 141 km
1855 TOKAIDO Earthquake 6,757 127 km
1751 NW. HONSHU ISLAND Eruption + Earthquake 2,100 132 km
1633 SAGAMI BAY Earthquake 150 115 km
1589 SURUGA, JAPAN Earthquake 142 km
1257 SAGAMI BAY, JAPAN Earthquake 133 km
1241 KAMAKURA, SAGAMI BAY Earthquake 127 km
863 NW. HONSHU ISLAND Eruption + Earthquake 124 km
818 TOKAIDO Eruption + Earthquake 121 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

15 volcanoes within 200 km. Closest: Yokodake (15 km).

Name Type Elevation Last Eruption Distance
Yokodake Stratovolcano(es) 2,480 m (8,136 ft) 1200 15 km
Asamayama Complex 2,568 m (8,425 ft) 2019 39 km
Harunasan Stratovolcano 1,449 m (4,754 ft) 550 58 km
Kusatsu-Shiranesan Stratovolcano(es) 2,165 m (7,103 ft) 2018 63 km
Shiga Shield(s) 2,041 m (6,696 ft) Unknown 70 km
Fujisan Stratovolcano 3,776 m (12,388 ft) 1708 81 km
Yakedake Stratovolcano(es) 2,455 m (8,054 ft) 1995 82 km
Norikuradake Stratovolcano(es) 3,026 m (9,928 ft) -50 83 km
Akagisan Stratovolcano 1,828 m (5,997 ft) Unknown 85 km
Washiba-Kumonotaira Shield(s) 2,924 m (9,593 ft) Unknown 89 km
Ontakesan Complex 3,067 m (10,062 ft) 2014 92 km
Midagahara Stratovolcano 2,621 m (8,599 ft) 1839 98 km
Myokosan Stratovolcano 2,454 m (8,051 ft) -750 98 km
Hakoneyama Complex 1,438 m (4,718 ft) 2015 104 km
Niigata-Yakeyama Lava dome 2,400 m (7,874 ft) 1998 104 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 24°F (-5°C) 1.4 in Coldest
February 25°F (-4°C) 2.1 in
March 31°F (-1°C) 3.3 in
April 43°F (6°C) 4.5 in
May 52°F (11°C) 5.2 in
June 58°F (15°C) 8.2 in
July 66°F (19°C) 8.1 in
August 68°F (20°C) 8.6 in Warmest
September 60°F (16°C) 8.8 in Wettest
October 49°F (9°C) 5.2 in
November 39°F (4°C) 2.6 in
December 30°F (-1°C) 1.2 in Driest

Koumibara has a seasonal temperature swing of 44°F / from 24°F in January to 68°F in August. Total annual precipitation is 59.0 inches, with September being the wettest month (8.8") and December the driest (1.2").

View full weather details →

Schools in Koumibara

3 public schools (NCES 2022-23 data).

School Level Enrollment Teachers Student/Teacher
Koumi High School
小海町北相木村南相木村中学校組合立小海中学校
小海町立小海小学校
View full schools details →

Museums in Koumibara

NameTypeAddressPhoneAnnual Revenue
BARAKURA English Garden
Dormouse Museum
Hirayama Ikuo Silk Road Museum
Kawamura Gozo Memorial Hall
Kiyosato Porcelain Museum
nakamura Keith Haring Collection
Paul Rusch Memorial Museum
Suntory Museum of Whisky
Tateshina Teddy Bear Musuem
オルゴール博物館ホール・オブ・ホールズ
フィリア美術館
三分一湧水館展望ホール
中村キースへリング美術館
五郎兵衛記念館
井戸尻考古館
京都芸術大学附属康耀堂美術館
佐久市こども未来館
佐久市昆虫体験学習館
佐久市立天来記念館
佐久市立望月歴史民俗資料館
八ケ岳泰雲書道美術館
八ヶ岳美術館
八ヶ岳自然文化園
北杜市小淵沢郷土資料館
北杜市考古資料館
北杜市長坂郷土資料館
北杜市須玉歴史資料館
北相木村考古博物館
南牧村民俗資料館
南牧村美術民俗資料館
南相木村民俗資料館
大泉歴史民俗資料館
奥村土牛記念美術館
富士見町歴史民俗資料館
尖石縄文考古館
尖石縄文考古館
山中鹿之助幸盛・生誕地資料館
影絵美術館
森のギャラリー(全国郷土玩具館)
清春白樺美術館
県立八ヶ岳ふれあいセンター
鎌倉彫記念館
長久保宿丸木屋
長久保宿歴史資料館 一福処濱屋

Libraries in Koumibara

NameAddressStaffAnnual VisitsCirculationCollectionPrograms
はしば文庫0.0
佐久市中央図書館0.0
北杜市たかね図書館0.0
北杜市ながさか図書館0.0
北杜市ライブラリーはくしゅう0.0
北杜市小淵沢図書館0.0
北杜市金田一春彦記念図書館0.0
北杜市金田一春彦記念図書館0.0
富士見町図書館0.0
生涯学習館「花の郷・茂来館」・図書館0.0

Farmers Markets in Koumibara

NameAddressSeasonHoursOrganicWebsite
びっくり市
道の駅南きよさと

Hotels in Koumibara

4 hotels within city radius — OpenStreetMap data

佐久屋
小海リエックス・ホテル
府中市民保養所やちほ
立花屋

Restaurants in Koumibara

7 restaurants within city radius — OpenStreetMap data

BELL FORET
Mont Blanc
佐久屋
八峰
月華
桔梗家
立花屋

Cafes in Koumibara

3 cafes within city radius — OpenStreetMap data

Caffe la casa
YATSUDOKI TERRACE 小海
たかちゃん・ふぁーむ

Clinics in Koumibara

2 clinics within city radius — OpenStreetMap data

佐久総合病院付属小海診療所
佐久総合病院付属小海診療所

Train Stations in Koumibara

4 train stations within city radius — OpenStreetMap data

Koumi
Managashi
Matsubarako
Umijiri

Gas Stations in Koumibara

3 gas stations within city radius — OpenStreetMap data

ENEOS
ENEOS
Showa-shell

Breweries in Koumibara

NameTypeAddressPhoneWebsite
8Peaks Brewing
武重本家酒造
白樺蓼科
相馬醤油

Ski Resorts Near Koumibara

64 ski resorts within range.

Resort Slopes (km) Lifts Peak (m) Price Season Night Park
Shiga Kogen Hoppo Bunadaira Ski Area 0.0 $0
Hakuba Sanosaka Snow Resort 0.0 $0
Kusatsu Onsen Ski Resort 0.0 $0
Manza Onsen 0.0 $0
Hakuba Goryu 0.0 $0
Shiga Kogen Shibutoge Ski Area 0.0 $0
Hakuba 47 0.0 $0
Hakuba Valley 0.0 $0
YAMABOKU Wild Snow Park 0.0 $0
Shiga Kogen Yokoteyama Ski Area 0.0 $0
Shiga Kogen Kumanoyu Ski Area 0.0 $0
Hakuba Happo One 0.0 $0
Shiga Kogen Hasuike Ski Area 0.0 $0
Shiga Kogen Sun Valley Ski Area 0.0 $0
Shiga Kogen Maruike Ski Area 0.0 $0
Shiga Kogen Giant Ski Area 0.0 $0
Kashimayari Snow Resort 0.0 $0
Hakuba Iwatake 0.0 $0
Shiga Kogen Higashidateyama Ski Area 0.0 $0
Shiga Kogen Nishidateyama Ski Area 0.0 $0
Shiga Kogen Terakoya Ski Area 0.0 $0
Shiga Kogen Takamagahara Mammoth Ski Area 0.0 $0
Akasawa Ski Area 0.0 $0
Shiga Kogen Tannenomori Okojo Ski Area 0.0 $0
Shiga Kogen Ichinose Family Ski Area 0.0 $0
Shiga Kogen Ichinose Diamond Ski Area 0.0 $0
Norn Minakami 0.0 $0
IIZUNA HIGASHI KOGEN RESORT 0.0 $0
Shiga Kogen Ichinose Yamanokami Ski Area 0.0 $0
Togakushi Ski Area 0.0 $0
Shiga Kogen Yakebitaiyama Ski Area 0.0 $0
Tsugaike Kogen 0.0 $0
Asahi Prime Ski Area 0.0 $0
Kamui Misaka Ski 0.0 $0
Komagane Ski Resort 0.0 $0
Chuo-do Ina Ski Resort 0.0 $0
Fujimi Panorama Resort 0.0 $0
Fujimi Kougen Snow Resort 0.0 $0
Chateraise Ski Valley Nobeyama 0.0 $0
Sun Meadows Kiyosato Ski Area 0.0 $0
Chateraise Ski Valley Koumi 0.0 $0
Yachiho Kōgen Ski Resort 0.0 $0
Tateshina Tokyu Ski Area 0.0 $0
Pilatus Tateshina Snow Resort 0.0 $0
Shirakaba 2 in 1 0.0 $0
Family Gelände Kirigamine Ski Area 0.0 $0
Shirakabako Royal Hill 0.0 $0
Kurumayama Kogen SKYPARK 0.0 $0
Fujiten Snow Resort 0.0 $0
Echo Valley 0.0 $0
Shirakaba Kogen Kokusai Ski 0.0 $0
Blanche Takayama 0.0 $0
Saku Ski Garden Parada 0.0 $0
Prince Hotels and Resorts Karuizawa 0.0 $0
Takamine Mountain Park Ski Area 0.0 $0
Karuizawa Snow Park 0.0 $0
Kazawa Snow Area 0.0 $0
Hijiri Kogen Ski Resort 0.0 $0
Sugadairakogen Pine Beak Ski Area 0.0 $0
Sugadaira Taro Area 0.0 $0
Sugadaira Kogen Davos Hill Ski Area 0.0 $0
Palcall Tsumagoi Resort Ski & Hotel 0.0 $0
Minenohara Kogen 0.0 $0
Jiigatake Snow Resort 0.0 $0

Airports Near Koumibara

9 airports within the area.

AirportIATAType
Shinshu-Matsumoto AirportMMJMedium Airport
Futaba AirportSmall Airport
Isesaki Auxiliary AirfieldSmall Airport
Kamisato GliderportSmall Airport
Kirigamine GliderportSmall Airport
Nagano City GliderportSmall Airport
Nirasaki GliderportSmall Airport
Ogurayama Paraglider LaunchSmall Airport
Oshino Sky Sports ClubSmall Airport

Churches & Religious Organizations in Koumibara

3 religious organizations (IRS tax-exempt data).

NameAddress
弁才天宮
松原諏方神社 上社
松原諏訪神社 下社

Explore Near Koumibara

Waterfalls
1
Natural waterfalls documented by USGS and OpenStreetMap contributors
View all →

Quick Facts

Timezone
Asia/Tokyo

🇯🇵 About Japan

Capital Tokyo
Population 126,529,100
Area 377,835 km²
GDP (USD) $4,213,167,237,906
GDP per capita $33,836
HDI 0.925
Life expectancy 84.0 years
Internet users 87.0%
Urban population 92.1%
Currency JPY (Yen)
Languages Japanese
Calling code +81
TLD .jp
Driving side left

Public Holidays in Japan

16 public holidays this year

Date Holiday Local Name
Jan 1 New Year's Day 元日
Jan 12 Coming of Age Day 成人の日
Feb 11 Foundation Day 建国記念の日
Feb 23 The Emperor's Birthday 天皇誕生日
Mar 20 Vernal Equinox Day 春分の日
Apr 29 Shōwa Day 昭和の日
May 4 Greenery Day みどりの日
May 5 Children's Day こどもの日
May 6 Constitution Memorial Day 憲法記念日
Jul 20 Marine Day 海の日
Aug 11 Mountain Day 山の日
Sep 21 Respect for the Aged Day 敬老の日
Sep 23 Autumnal Equinox Day 秋分の日
Oct 12 Sports Day スポーツの日
Nov 3 Culture Day 文化の日
Nov 23 Labour Thanksgiving Day 勤労感謝の日

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Frequently Asked Questions About Koumibara

What is the population of Koumibara?

Koumibara has a population of 4,353 residents and is located in Japan. The population density is 67 people per square mile, spread across 65.1 square miles. The median age of residents is 50.0 years, which is older than the national median of 38.9 years.

Is Koumibara expensive to live in?

The median household income is $30,100, 60% below the national average of $75,149. The median home value is $76,000 (73% below the U.S. median). Renters pay a median of $380 per month, below the national average of $1,163. The home price-to-income ratio is 2.5x, indicating housing is reasonably affordable relative to local income levels.

What is the weather like in Koumibara?

Koumibara has a cool climate with an average annual temperature of 45°F (7°C). Winter temperatures average 24°F in January, while summers reach an average of 66°F in July. The area receives 229 sunny days per year. Annual rainfall totals 59.0 inches, with 7.9 inches of snow.

How is the job market in Koumibara?

The job market in Koumibara is very strong, with unemployment at just 2.1% / well below the national rate of 3.6%. There are 139 business establishments in the area.

How much does housing cost in Koumibara?

The median home value in Koumibara is $76,000. For renters, the median monthly rent is $380.

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