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Koga
City in Ibaraki, Japan
Overview
Koga, set in southwestern Ibaraki, blends centuries-old history with a peaceful, small-town atmosphere. The city is renowned for its historic castle park, beautiful cherry blossoms, and authentic local culture. It's an inviting destination for families, history buffs, and those seeking a slower pace of life.
Geographic Context
Jurisdiction
Japan
Prefecture
Ibaraki
Population
59,349
Time Zone
Asia/Tokyo
Coordinates
36.18°, 139.72°
Key Metrics
Safety Score
87
Female Safety
85
LGBTQ+ Safety
70
Traffic Safety
80
Food Safety
98
Monthly Cost
$1,305
Local Cost
$818
Local Income
$1,800
Cashless
68
English
35
Temperature
14.7°C
Summer Avg
24.9°C
Winter Avg
4.0°C
Record High
37.8°C
Record Low
-5.1°C
Humidity
78%
Precipitation
1519 mm
Internet Speed
16 Mbps
Upload
6 Mbps
Latency
18 ms
City Vibrancy
48
Coworking
0
Cafes
9
Nightlife
28
Parks
11
Transport
52
Walk Score
52
Footways
104.0
Airport
—
Distance
—
Explore
Frequently Asked Questions
Data sources
Source-backed data
NASA POWER - Climate normals and monthly weather measurements rendered as city weather metrics. Updated 2026-03-22.
World Air Quality Index - Latest available city-level air quality station measurement. Updated 2025-12-05.
Ookla Open Data - Internet speed aggregates for 2024Q3 from 2 tests. Updated 2025-12-06.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Updated 2025-12-06.
OpenStreetMap transport extract - Walkability, footway density, and airport access metrics derived from mapped transport features. Updated 2025-12-06.
Oyster List city price model - City price estimates calibrated from local price surveys and jurisdiction-level cost signals. Updated 2026-01-14.
Estimated data
Oyster List AI-assisted estimates - Safety, lifestyle, income, and practical scores are model-assisted estimates derived from source-backed country and city signals. Confidence 76/100.
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