Zip Code 98274 — Mount Vernon, WA
98274 is a ZIP Code associated with Mount Vernon, WA, located within Skagit. 98274 ranks #4 out of 13 ZIP codes in Skagit County by population (and #184 out of 605 in WA). The area supports an estimated population of 18,860 residents across Data Pending housing units, with a population density of 50.9 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (48.360130, -122.143460)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 98274 |
| Primary City | Mount Vernon |
| State / Province | WA |
| County | Skagit |
| Total Population | 18,860 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 50.9 people/sq mi |
| Timezone | America/Los_Angeles |
How 98274 Compares
| Metric | ZIP 98274 | Skagit County | WA State Average |
|---|
| Population | 18,860 | 132,684 (Total) | 7,816,021 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 50.9 /sq mi | -- | -- |
| County Pop Rank | #4 of 13 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →