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New Castle
City in New Hampshire, United States
Overview
New Castle is New Hampshire's smallest and only island town, renowned for its scenic coastline, historic attractions, and upscale residential charm. Its quiet neighborhoods, maritime history, and abundance of natural beauty make it a perfect getaway for relaxation and outdoor activities.
Geographic Context
Jurisdiction
United States
State
New Hampshire
Population
4,923
Time Zone
America/New_York
Coordinates
43.07°, -70.72°
Key Metrics
Safety Score
94
Female Safety
92
LGBTQ+ Safety
85
Traffic Safety
88
Food Safety
95
Monthly Cost
$3,630
Local Cost
$2,710
Local Income
$4,200
Cashless
90
English
100
Temperature
9.3°C
Summer Avg
19.1°C
Winter Avg
-0.4°C
Record High
30.4°C
Record Low
-19.7°C
Humidity
83%
Precipitation
1333 mm
Internet Speed
360 Mbps
Upload
88 Mbps
Latency
14 ms
City Vibrancy
7
Coworking
0
Cafes
1
Nightlife
1
Parks
5
Transport
16
Walk Score
16
Footways
31.0
Airport
PSM
Distance
9 km
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 43 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 74/100.
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