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Kostajnica
City in Republika Srpska, Bosnia and Herzegovina
Overview
Kostajnica is a small, scenic town on the banks of the Una river in northwestern Bosnia and Herzegovina, known for its picturesque landscapes and relaxed pace of life. Its proximity to Croatia and historical significance make it a pleasant stop for travelers seeking authenticity.
Geographic Context
Jurisdiction
Bosnia and Herzegovina
Entity
Republika Srpska
Population
3,834
Time Zone
Europe/Sarajevo
Coordinates
45.22°, 16.54°
Key Metrics
Safety Score
70
Female Safety
60
LGBTQ+ Safety
40
Traffic Safety
70
Food Safety
85
Monthly Cost
$703
Local Cost
$390
Local Income
$470
Cashless
25
English
30
Temperature
10.8°C
Summer Avg
20.8°C
Winter Avg
0.9°C
Record High
42.3°C
Record Low
-24.1°C
Humidity
80%
Precipitation
1094 mm
Internet Speed
19 Mbps
Upload
6 Mbps
Latency
7 ms
City Vibrancy
16
Coworking
0
Cafes
13
Nightlife
0
Parks
3
Transport
29
Walk Score
29
Footways
58.0
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 1 tests. Updated 2025-12-05.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Updated 2025-12-07.
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 65/100.
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