About Seattle Atlas
Seattle Atlas is an interactive map for exploring land use, transit, and urban planning in Seattle. View zoning rules, transit routes, bike infrastructure, and proposed development policies—all in one place.
What's on the Map
Zoning & Land Use
- Simplified view showing what can be built (houses, apartments, mixed-use, etc.)
- Detailed technical zoning codes (NR1, LR2, NC3, etc.)
- Urban Villages—areas designated for growth
Transit
- Bus and ferry routes (King County Metro, Sound Transit)
- Transit stops across Seattle
- Bike infrastructure: protected lanes, greenways, trails, shared lanes, sharrows
Development Proposals
- Station area rezoning around light rail
- ADU policy updates
- Comprehensive Plan 2044
- Industrial & maritime strategy
Data Sources
- Zoning & Urban Villages: City of Seattle Open Data Portal
- Transit Routes & Stops: King County Metro GTFS, Sound Transit
- Bike Infrastructure: Seattle Department of Transportation (SDOT)
- Development Proposals: Seattle Office of Planning & Community Development (OPCD)
Methodology
All geographic data is sourced from official government datasets. Zoning boundaries follow Seattle Municipal Code Title 23 designations. Transit data comes from GTFS feeds published by transit agencies. Bike infrastructure reflects SDOT's master plan.
Source data is processed into vector tiles using Tippecanoe and hosted on Mapbox. The app is built with Next.js, React, and TypeScript.
Open Source
Seattle Atlas is open source. View the code on GitHub.
Seattle Atlas is not affiliated with the City of Seattle, King County, or any government agency. Data may not reflect the most recent changes—verify with official sources for legal determinations.