- Immigration enforcement surged in late 2025 across both Oregon and Washington states.
- Multnomah and Yakima counties recorded the highest per-capita arrest rates in the region.
- Federal judges are scrutinizing warrantless tactics and the use of state licensing data.
(OREGON AND WASHINGTON) — The University of Washington Center for Human Rights released new federal data showing immigration arrests and detentions in Oregon and Washington surged late in 2025 after lower activity earlier in the year.
The dataset tracks immigration enforcement actions across both states and shows a sharp shift in tempo in the final months of 2025, a pattern that drew closer legal scrutiny of how arrests were carried out.
Earlier in 2025, Oregon arrests stayed below 100 per month from January through September, then jumped to over 400 per month in October and November.
That fall escalation drove Oregon to 1,655 immigration arrests in 2025, more than the previous three years combined.
Multnomah County, in the Portland area, saw one of the steepest spikes, with 34 apprehensions in September.
Arrests then jumped to 164 in the four weeks after President Trump called Portland “war-ravaged.”
The Center for Human Rights data also showed broader fall increases across Oregon, with arrest activity concentrating in a handful of counties as the year ended.
County-level comparisons can reflect differences in enforcement focus, resources, and operational targeting, and the dataset’s “arrests” measure enforcement actions rather than any final outcome in immigration proceedings.
Even so, the fall jump in Multnomah County stood out because a per-capita lens changed how the increase looked compared with raw totals elsewhere in the region.
Multnomah County recorded approximately 575 apprehensions in the fall, a roughly 600% increase, representing 72 arrests per 100,000 residents, the highest rate in the Pacific Northwest.
Washington County posted the second-largest increase, with roughly 315 arrests, a 2,100% jump from the previous period, representing 52 arrests per capita.
Marion County also experienced significant increases, the data showed, as the statewide rise broadened beyond the Portland metro area.
Alongside arrests, Oregon also recorded a heavy late-year concentration in detentions, a related but distinct measure that can reflect custody decisions, transfers, or holds.
Between October and December 2025, 1,174 people were detained in Oregon.
Detention counts can carry immediate consequences for families and employers and can shape access to lawyers, even when underlying immigration cases remain unresolved.
The data points to when detentions occurred, but it does not, by itself, establish why officials chose specific timing, locations, or targets.
Across the Columbia River, Washington state showed a similar late-2025 acceleration, with the largest volume concentrated in King County.
Immigration arrests in King County increased more than 300% from January to December 2025, with over 1,000 people arrested, representing about 44% of all arrests statewide.
Raw totals, however, did not capture every hotspot, and the Center for Human Rights data highlighted how per-capita rates can identify different areas of intense activity.
Yakima County recorded the highest rate of arrests per capita in Washington with 180 arrests per 100,000 residents, nearly three times higher than the next closest county.
Clark County also saw significant increases, the data showed, indicating the late-year rise was not confined to one metro area.
Washington’s detention figures also climbed as arrests accelerated toward the end of the year.
Between October and December 2025, 951 people were detained in Washington.
The late-2025 jump also stood out against the previous year’s baseline in the same period, the data showed.
Overall, arrests jumped from 250 in late 2024 to 2,250 in the final three months of 2025.
Federal court testimony and litigation records in Oregon later drew attention to the tactics used during that period of intensified enforcement.
U.S. District Judge Mustafa Kasubhai criticized ICE tactics described during court testimony, including instructions for immigration officers in Oregon to meet daily arrest quotas.
Kasubhai also cited the use of surveillance technology, including license plate readers, as officers sought to identify potential targets.
Those operations were linked to Operation Black Rose, which resulted in more than 1,200 arrests in the Portland area as of mid-December.
Court testimony also described how officers used technology to make arrests within as little as 10 minutes.
The testimony raised concerns about arrests often occurring without prior warrants or individualized probable cause assessments, as described in the record.
In Washington, federal agents used a different data stream, accessing the Department of Licensing’s database to check license plates and verify legal status through Social Security number registration.
Oregon’s legal posture diverged in December, when a federal judge issued a preliminary injunction ordering DHS to stop using Department of Licensing data for immigration enforcement in Oregon.
That practice has not yet been challenged in Washington, according to the data summary accompanying the enforcement descriptions.
