CDP
Newcastle
Newcastle is a community name the Census tracks. It helps you name the place, but it usually is not city hall. Start with the county layer unless an official local district says otherwise.
Starting point
Start with the county unless an official district says otherwise.
A Census-designated place is a useful local name, but it usually does not have its own city hall. For permits, records, taxes, courts, and many services, begin with the county layer.
Special districts, utilities, schools, fire agencies, parks, water agencies, coastal rules, and state maps can still control a specific issue.
2025 population
Not available
Land area
2.392 sq mi
Water area
0.004 sq mi
Directory notes
Local layers to keep on the same page.
Treat this as a community name.
A CDP can be real and useful on the ground, but it normally does not mean there is a city hall for permits, rent rules, business licenses, or local code.
Start with the county.
Placer County is the county layer shown in the Census place-county reference data.
Watch for districts.
Water, sewer, fire, school, parks, utilities, coast, wildfire, and special taxes can still belong to a district or state agency.
County layer
County shown for Newcastle
Practical notes
Office, map, permit, and paperwork notes for Newcastle
County layer · Rules and licenses · Reviewed July 6, 2026
Roseville's myRSVL app is the everyday city request door
Roseville's myRSVL app and web page let residents report non-emergency issues, add photos, use location details, and track many routine city requests.
County layer · Home and property · Reviewed July 5, 2026
Lincoln utility setup covers water, sewer, and garbage
Lincoln utility service starts with a city utility request, and the same local system helps with garbage cans, green waste schedules, missed cans, and special waste questions.
County layer · Outdoors · Reviewed July 5, 2026
Rocklin park pavilions are booked online
Rocklin uses an online reservation system for park pavilions and facility rentals, with park rental details tied to places like Johnson-Springview, Margaret Azevedo, and Whitney Park.
County layer · Home and property · Reviewed July 4, 2026
Lincoln separates public works, code, and police reports
Lincoln's Report a Problem page separates Public Works issues, code concerns, railroad crossing emergencies, mosquito or standing water concerns, and police non-emergencies.
County layer · Home and property · Reviewed July 4, 2026
Rocklin eTRAKiT accounts are local to Rocklin
Rocklin uses eTRAKiT for online permitting, and contractors need a Rocklin account and a valid city business license before permit work can move smoothly.
County layer · Home and property · Reviewed July 4, 2026
Rocklin utility service is split among several providers
Rocklin residents should know that water, sewer, garbage, gas, electricity, and other utility services are handled by separate providers.
Almanac notes
Stories and local context near Newcastle
County layer · History and culture
Gladding McBean keeps Lincoln's clay story alive
Lincoln's Gladding McBean story ties local clay deposits, terra cotta, sewer pipe, roof tile, public art, and downtown identity into one long-running industry.
County layer · History and culture
Rocklin's Finn Hall grew out of quarry life
Finn Hall in Rocklin was built in 1905 by the Finnish Temperance Society, with local granite and deep ties to the city's quarry community.
County layer · History and culture
Roseville's Carnegie building still holds local memory
Roseville's old Carnegie Library opened in 1912, later became a museum, and still anchors the city's rail-town and downtown story.
County layer · History and culture
Roseville's downtown still has an old-town spine
Downtown Roseville links Historic Old Town, the Vernon Street District, Royer Park, Saugstad Park, transit, shops, and civic life into one walkable core.
County layer · History and culture
Colfax tells a sharper railroad story than the quick version
Colfax grew where the Central Pacific Railroad reached the Sierra climb, with Illinoistown nearby, a restored passenger depot, and a museum on Railroad Street.
County layer · History and culture
Loomis kept its fruit-shed heart when it became a town
Loomis grew around the railroad, fruit packing sheds, and a local vote to protect its small-town character from being swallowed by nearby growth.
County layer · Outdoors
McBean Park is Lincoln's in-town recreation anchor
McBean Park gathers Lincoln's pool, ballfields, stadium, dog park, picnic space, pavilion, and everyday recreation into one central city park.
County layer · Outdoors
Miner's Ravine Trail is Roseville's green line toward downtown
Miner's Ravine Trail helps Roseville connect parks, neighborhoods, bikes, walking trips, and downtown events without making every errand a car trip.