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Newcastle
City in California, United States
Overview
Newcastle, California is a tiny foothill town in Placer County, prized for its orchards, small-town charm, and historic roots. With just over 250 residents, it offers a quiet, rural getaway just 30 minutes from Sacramento.
Geographic Context
Jurisdiction
United States
State
California
Population
272
Time Zone
America/Los_Angeles
Coordinates
38.87°, -121.13°
Key Metrics
Safety Score · estimate
88
Female Safety
82
LGBTQ+ Safety
80
Traffic Safety
80
Food Safety
95
Monthly Cost · estimate
$2,610
Local Cost
$1,910
Local Income
$4,100
Cashless
70
English
100
Temperature
16.3°C
Summer Avg
25.0°C
Winter Avg
8.3°C
Record High
45.0°C
Record Low
-5.7°C
Humidity
56%
Precipitation
703 mm
Internet Speed
429 Mbps
Upload
26 Mbps
Latency
51 ms
City Vibrancy
—
Coworking
0
Cafes
0
Nightlife
0
Parks
0
Transport
0
Walk Score
0
Footways
—
Airport
AUN
Distance
10 km
Explore
Data sources
Source-backed data
World Air Quality Index - Latest available city-level air quality station measurement. Record updated 2025-12-05.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Record updated 2025-12-08.
OpenStreetMap transport extract - Walkability, footway density, and airport access metrics derived from mapped transport features. Record updated 2025-12-06.
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-23.
Oyster List city price estimates - Price origins are unverified. Available generation methods include AI estimates; stored records do not identify a survey, observation period, or model for each price. Record updated 2026-01-14.
Oyster List AI-assisted estimates - Safety, lifestyle, income, and practical scores include model-assisted estimates. Stored records do not identify supporting observations for each score. Model-reported confidence: 65/100; this is not a measured accuracy score. Model: derived+gpt-4.1. Record updated 2026-03-26.
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