Market insights · Washington
Whatcom County, WA: growth, migration and housing
Whatcom County has 236,392 residents, up 3.9% since 2020 (+0.8% in the last year). In 2022–2023, 6,378 households moved in and 5,686 moved out (+692 net), bringing in a net $71.6M of income. Median household income is $81,784, the median home $585,800 and median rent $1,555 a month.
In Washington: 22nd of 39 counties for 5-year population growth · 15th of 39 counties for net in-migration (per resident) · 15th of 39 counties for median household income · 5th of 39 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Whatcom County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| King County, WA | 1,004 | $97.4M |
| Snohomish County, WA | 514 | $33.6M |
| Skagit County, WA | 450 | $27.3M |
| Pierce County, WA | 178 | $8.8M |
| Island County, WA | 140 | $6.4M |
| Spokane County, WA | 136 | $6.8M |
| Thurston County, WA | 115 | $10.9M |
| Kitsap County, WA | 109 | $5.5M |
Where leavers went
Top counties by households leaving Whatcom County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| King County, WA | 834 | $49.9M |
| Skagit County, WA | 498 | $36.1M |
| Snohomish County, WA | 470 | $27.4M |
| Pierce County, WA | 180 | $10.4M |
| Maricopa County, AZ | 141 | $11.2M |
| Spokane County, WA | 110 | $5.4M |
| Island County, WA | 104 | $6.4M |
| Clark County, WA | 91 | $4.0M |
BizyFi in Whatcom County
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Sources: U.S. Census Bureau population estimates (vintage 2025), American Community Survey 5-year (2024), and IRS Statistics of Income county-to-county migration data (2022–2023). Migration counts are tax returns (roughly households) moving between U.S. counties; the IRS suppresses very small flows. Growth rates, per-1,000 figures, rent share and state ranks are BizyFi calculations. Data updated 2026-10-17. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.