Regional Data Profile: Introduction
Introduction — Population and Households — Economy — Housing — Transportation
| Quick Facts | |
| Counties | King, Kitsap, Pierce and Snohomish |
| Cities and Towns | 82 |
| Largest City | Seattle (King County) – population 612,000 (2010) |
| Smallest City | Index (Snohomish County) – population 165 (2010) |
| Newest City | Sammamish (King County) – incorporated August 1999 |
| Oldest City | Steilacoom (Pierce County) – incorporated 1854 |
Source: WA State Office of Financial Management |
|
| County | Area (square miles) |
| King | 2126.0 |
| Kitsap | 396.0 |
| Pierce | 1678.9 |
| Snohomish | 2089.1 |
| Region | 6,290 |
Source: WA State Office of Financial Management |
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