Oregon ended January with a modest increase week after week in coronavirus cases, interrupting the sharp downward trajectory that offered signs of progress.
The state registered 4,786 confirmed or suspected coronavirus infections in the week ending Sunday, January 31, an increase of 16% over the previous week. The rise in cases exceeded a 2% gain in weekly tests.
Weekly cases fell about half compared to records recorded in December. But they remain much higher than at any point before November, with weekly cases almost double the peak in July.
Postcodes up and down the Interstate 5 corridor from Portland to Medford recorded the majority of new coronavirus cases last week.
Oregonian / OregonLive is monitoring state coronavirus data, reporting by postal code the areas with the biggest weekly changes. Our analysis also highlights the areas with the most new cases in relation to the population.
(Click here for an interactive map)
Here is a brief summary of the communities that added the newest cases for the week that ended on Sunday, January 31:
97220 East of Portland (Parkrose, Parkrose Heights, Sumner, Madison South)
This Multnomah County Postcode added 135 boxes, increasing its count to 1,450. This is the 23rd highest number in Oregon and 46th highest per capita since the pandemic began.
97403 Eugene
This postcode for Lane County added 93 cases, increasing its count to 576. This is the 86th largest in Oregon and the 66th most per capita since the pandemic began.
97301 Salem
This Marion County postal code added 84 cases, bringing its count to 3,159. It is the highest in Oregon and the 32nd highest per capita since the pandemic began.
97501 Medford
This Jackson County postal code added 81 cases, bringing its count to 2,213. This is the tenth largest number in Oregon and the 48th highest per capita since the pandemic began.
97330 Corvallis
This Benton County postal code added 77 cases, bringing its count to 972. This is the 52nd largest in Oregon and the 209th most per capita since the pandemic began.
97504 Medford
This postcode for Jackson County added 76 boxes, bringing its count to 1,829. This is the 14th highest number in Oregon and 77th highest per capita since the pandemic began.
97401 Eugene
This postcode for Lane County added 74 boxes, increasing its count to 1,409. This is the 26th highest number in Oregon and 120th highest per capita since the pandemic began.
97527 Grants Pass
This Josephine County postal code added 71 cases, bringing its count to 835. This is the 63rd largest number in Oregon and the 207th largest per capita since the pandemic began.
97233 East Portland / Gresham (Hazelwood / Glenfair / Centennial / Rockwood)
This Multnomah County postal code added 71 boxes, bringing its count to 2,999. This is the second highest number in Oregon and the 15th highest per capita since the pandemic began.
97128 McMinnville
This Yamhill County Postcode added 69 boxes, bringing its count to 1,604. This is the 18th highest number in Oregon and 68th highest per capita since the pandemic began.
Here is a brief summary of communities with at least 20 new cases that added the highest number of new cases per capita for the week ending Sunday, January 31:
97403 Eugene
This postal code registered new confirmed or suspected infections of 69 per 10,000 people during the week ending on Sunday, slightly above the previous week.
Lane County Postcode added 93 new cases, increasing its total to 576.
97882 Umatilla
This postal code registered new confirmed or suspected infections of 54 per 10,000 people during the week ending on Sunday, down about a quarter from the previous week.
The postal code of Umatilla County added 43 new cases, increasing its total to 1,418.
97220 east of Portland / Gresham (Parkrose, Parkrose Heights, Sumner, Madison South)
This postal code recorded new confirmed or suspected infections of 46 per 10,000 people during the week ending on Sunday, more than double the previous week.
The Multnomah County Postcode added 135 new cases, increasing its total to 1,450.
97070 Wilsonville
This postal code registered new confirmed or suspected infections of 27 per 10,000 people during the week ending Sunday, below the previous week.
The postal code of Clackamas County added 67 new cases, increasing its total to 956.
97862 Milton-Freewater
This postal code registered new confirmed or suspected infections of 25 per 10,000 people during the week ending on Sunday, slightly above the previous week.
The postal code of Umatilla County added 30 new cases, increasing its total to 788.
97058 The Dalles
This postal code registered new confirmed or suspected infections of 24 per 10,000 people during the week ending on Sunday, compared to the previous week.
The postal code of Wasco County added 49 new cases, increasing its total to 1,073.
97741 Madras
This postal code registered new confirmed or suspected infections of 23 per 10,000 people during the week ending on Sunday, slightly above the previous week.
The Jefferson County ZIP Code added 29 new cases, increasing its total to 895.
97013 Canby
This postal code registered new confirmed or suspected infections of 22 per 10,000 people during the week ending on Sunday, compared to the previous week.
The postal code of Clackamas County added 54 new cases, increasing its total to 1,123.
97317 Salem
This postal code registered new confirmed or suspected infections of 21 per 10,000 people during the week ending on Sunday, a significant increase from the previous week.
The postal code of Marion County added 54 new cases, increasing its total to 1,227.
97361 Monmouth
This postal code registered new confirmed or suspected infections of 21 per 10,000 people during the week ending on Sunday, a marked increase from the previous week.
The postal code of Polk County added 26 new cases, increasing its total to 377.
– Brad Schmidt; [email protected]; 503-294-7328; @_brad_schmidt