County hub rural Washington

Skagit County, WA

Aggregated demographic, housing, and geographic context for the 13 ZIP codes inside Skagit County, drawn from public Census ACS and SimpleMaps data.

ZIP codes
13
in this county
Total population
129,595
across all listed ZIPs
Cities
12
distinct city/town names
Avg density
129
people / sq mi
Avg median income
household, ACS
Avg home value
owner-occupied

ZIP codes in Skagit County

ZIPCityPopulationDensityMedian income
98273 Mount Vernon 30,924 142
98284 Sedro Woolley 27,159 37
98221 Anacortes 22,707 169
98274 Mount Vernon 18,052 49
98233 Burlington 16,615 194
98257 La Conner 4,513 94
98237 Concrete 4,474 4
98232 Bow 4,030 29
98235 Clearlake 368 414
98255 Hamilton 262 153
98267 Marblemount 250 0
98263 Lyman 196 310
98238 Conway 45 77

About Skagit County

Counties are the workhorse unit of American local government — they administer property taxes, run the courts and sheriff’s office, manage many road and library systems, and in much of the country they collect public health and zoning data that ZIP codes don’t. Skagit County in Washington contains roughly 13 ZIP codes spread across 12 distinct cities and unincorporated communities, with an aggregate population of about 129,595. Reading those ZIPs together at the county level smooths over neighborhood-by-neighborhood noise and surfaces the broader economic and demographic shape of the area. For block-level detail, drill into any individual ZIP profile or compare against the wider Washington index.

The average density across listed ZIPs sits at roughly 129, which classifies the county overall as a rural environment. That label is a generalization — nearly every county contains both a relatively dense core and quieter outlying ZIPs, and the gap between them is often what determines where you actually want to live or open a business. Average median household income in our enriched ZIPs lands near —, with average owner-occupied home values around —; both numbers move dramatically as you cross from one ZIP to the next, so use the table above as a sorting tool, not a verdict.

If you’re moving into Skagit County, the county itself is also where most of your real-life paperwork will land — vehicle registration, voter registration, property recording, and school district enrollment in many states. Knowing the county that contains your prospective ZIP makes it much easier to look up the right tax assessor, election office, or school district website. Our relocation guide walks through the order in which to tackle these handoffs after a move.

For service-area planning, the county is also where most US business licensing and many sales-tax rules are administered. Service businesses scoping Skagit County should pair this aggregate view with the individual ZIP profiles to identify the densest, highest-income pockets first, then expand outward along whatever transportation corridor matches their delivery model.