Strongest migration-inflow ZIP codes in Washington
Top 25 ZIP codes in Washington with the strongest IRS net migration inflows. #1 is 99301 (Pasco) at about +4,644. Compare migration signals on US5.
These ZIP codes show the strongest positive IRS net migration figures in Washington on US5’s published series — a directional signal of inflow versus outflow.
Strongest inflows: 99301 (Pasco) at about +4,644; 98052 (Redmond) at about +4,247; 98012 (Mill Creek) at about +4,089.
Open any ZIP for a full demographics, income, and housing profile, or return to the Washington state page for the complete ZIP table.
Ranked ZIP codes
| # | ZIP | City | County | Net migration | Population | Income | Home value |
|---|---|---|---|---|---|---|---|
| 1 | 99301 | Pasco | Franklin County | +4,644 | 86,467 | $82,517 | $353,300 |
| 2 | 98052 | Redmond | King County | +4,247 | 79,074 | $164,848 | $1,107,900 |
| 3 | 98012 | Mill Creek | Snohomish County | +4,089 | 76,123 | $141,653 | $811,500 |
| 4 | 98682 | Vancouver | Clark County | +3,615 | 67,297 | $95,863 | $442,100 |
| 5 | 98208 | Eastmont | Snohomish County | +3,256 | 60,616 | $102,546 | $641,300 |
| 6 | 99208 | Spokane | Spokane County | +3,160 | 58,834 | $81,084 | $414,000 |
| 7 | 98391 | Lake Tapps | Pierce County | +3,099 | 57,691 | $129,233 | $578,300 |
| 8 | 98115 | Seattle | King County | +2,914 | 54,248 | $148,190 | $1,041,500 |
| 9 | 98270 | Marysville | Snohomish County | +2,887 | 53,744 | $102,258 | $540,000 |
| 10 | 98133 | Shoreline | King County | +2,826 | 52,620 | $92,371 | $719,100 |
| 11 | 98003 | Federal Way | King County | +2,804 | 52,210 | $70,800 | $428,500 |
| 12 | 98661 | Vancouver | Clark County | +2,795 | 52,027 | $75,037 | $424,700 |
| 13 | 98258 | Lake Stevens | Snohomish County | +2,793 | 52,005 | $120,571 | $606,600 |
| 14 | 98103 | Seattle | King County | +2,792 | 51,988 | $127,372 | $1,012,900 |
| 15 | 98034 | Kirkland | King County | +2,784 | 51,836 | $128,974 | $875,200 |
| 16 | 99336 | Kennewick | Benton County | +2,749 | 51,180 | $63,308 | $292,300 |
| 17 | 98632 | Longview | Cowlitz County | +2,731 | 50,845 | $64,705 | $355,200 |
| 18 | 98092 | Auburn | King County | +2,713 | 50,510 | $116,614 | $594,800 |
| 19 | 98225 | Bellingham | Whatcom County | +2,705 | 50,355 | $62,220 | $588,800 |
| 20 | 98387 | Spanaway | Pierce County | +2,682 | 49,940 | $101,141 | $424,100 |
| 21 | 98023 | Federal Way | King County | +2,664 | 49,593 | $101,960 | $545,600 |
| 22 | 98118 | Seattle | King County | +2,662 | 49,560 | $109,085 | $746,400 |
| 23 | 98105 | Seattle | King County | +2,644 | 49,229 | $78,691 | $1,261,100 |
| 24 | 98042 | Lake Morton-Berrydale | King County | +2,610 | 48,594 | $125,554 | $613,000 |
| 25 | 98374 | South Hill | Pierce County | +2,559 | 47,645 | $108,854 | $491,200 |
Frequently asked questions
Which ZIP codes in Washington have the strongest migration inflows?
By IRS net migration, 99301 (Pasco) leads this board at about +4,644. Positive values signal more inflow than outflow in the published series.
How does US5 rank ZIP codes in Washington?
We rank indexable ZIP codes with positive IRS net migration from high to low (with a population floor).
Where can I explore all ZIP codes in Washington?
Visit the Washington state page for the full ZIP table, demographics summary, and sortable income/housing columns.