Newcastle Washington Map

About Newcastle, Washington

Newcastle is a locality in King County, Washington, United States. It has a population of 12,989. The population density is 1126.9 people per km². Newcastle is located at 47.5390°N, 122.1557°W. It observes the Pacific Time (America/Los_Angeles) timezone. ZIP code: 98059.

Newcastle rests on slopes that tumble towards the broad, shimmering expanse of Lake Washington, its avenues tracing the generous contours of the land. It lies 3.8 miles south-east of Mercer Island, WA (from Mercer Island, WA: bearing 125°T), and is situated 9.4 miles east-south-east of Seattle. The air here, especially as the day begins to soften towards evening, carries a cool, damp kiss from the water, a scent of pine needles and distant, damp earth. Sunlight, when it breaks through the frequent Pacific Northwest clouds, can be startlingly bright, illuminating the verdant tapestry of firs and cedars that still cling to the steeper inclines, hinting at a wilder past just beyond the manicured lawns and quiet cul-de-sacs. The character of Newcastle is one of elegant repose, a place where the natural world has been thoughtfully integrated into the rhythm of modern life, a continuous conversation between the built environment and the ancient, breathing landscape. The story of Newcastle is deeply entwined with the earth beneath its feet, once a rich vein of coal that fueled the early growth of the region and drew a diverse population of miners to its steep hillsides. This industrial past, though largely dormant now, has left its imprint, a subtle resilience in the community's spirit. Today, Newcastle’s economy has broadened, embracing technology and a service sector that supports its growing residential base, yet the echoes of its mining heritage remain, a quiet reminder of the labor that shaped its foundations. The town’s connection to Lake Washington is paramount, offering residents not just scenic vistas but also recreational opportunities, a watery artery that pulses with life and connects Newcastle to the larger Puget Sound.

About This Newcastle Map Page

This page provides an embedded street and satellite map of Newcastle, Washington — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 47.538989, -122.155677. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Newcastle and King County.

Detailed location data for Newcastle includes the ZIP code (98059), telephone area code (206, 253), county seat of King County (Seattle), and school district assignment (Issaquah School District). These are among the most commonly searched location details for any US city or town.

Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Newcastle is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.