Newcastle is a community in Placer County, California, home to about 1,585 people across 2.4 square miles. Its ZIP code is 95658.
Homes sold for a median of $450 per square foot in the three months ending August 2026, a balanced market.
Each card is that ZIP code’s whole market, including any part outside Newcastle. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Newcastle’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Sacramento International Airport (SMF)27 miles away |
|---|---|
| Nearest city of 250,000+ | Sacramento, CA28 miles away |
| Nearest city of 1 million+ | Los Angeles, CA368 miles away |
Straight-line distances from the center of Newcastle; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Newcastle had 1,321 residents in the 2020 census, up 8% since 2010.
It’s the 951st largest of 1,563 towns in California by population.
Placer County grew from 15,786 residents in 1900 to 404,739 in 2020.
Placer County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 93°F in summer, and winter lows average 37°F. About 36.1 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Auburn, CA weather station (4 miles away).
167,628 jobs at 12,180 businesses in Placer County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
8 doctors and other health care providers list an office in Newcastle.
Nearest hospitals
Providers with an office here
| Specialist doctors | 1 |
|---|---|
| Dentists | 1 |
| Nurse practitioners and physician assistants | 1 |
| Mental health providers | 2 |
| Chiropractors | 3 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores
Pharmacies
Libraries
Museums
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Harvest Ridge Cooperative Charter District, Newcastle Elementary, Loomis Union Elementary. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Harvest Ridge Cooperative CharterNewcastle | K–8 | 349 | Charter | 0.4 mi |
| Newcastle CharterNewcastle | K–8 | 333 | Charter | 0.5 mi |
| Newcastle ElementaryNewcastle | K–8 | 164 | Public | 0.5 mi |
| Ophir STEAM AcademyNewcastle | K–8 | 200 | Public | 1.7 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.