Portland Chess Association (PCA)
Currently hosts casual chess

Director Park in Portland
Hosts casual chess. Has a giant chess set.

Vancouver Chess Club
Hosts casual chess

Firstenburg Community Center Chess Club in Vancouver
Hosts casual chess for players age 50+

Oregon City/West Linn Chess Club
Currently hosts casual chess. The first four editions of the Oregon Senior Open were held at the Oregon City/West Linn chess club from 2011-2014.

Gaston Chess Club
Hosts casual chess

Oregon Chess Federation (OCF)
The US Chess and Northwest Chess state affiliate for Oregon. Runs, sanctions, or sponsors the annual Oregon Closed (Championship and Challengers), Oregon Open (usually the largest non-scholastic tournament in Oregon each year), Oregon Class Championships, Oregon Senior Open, Oregon Junior Closed (Championship and Challengers), and Oregon Girls Championship. All of these tournaments have often been held in the greater Portland area and all of the tournaments except the Oregon Open (since it’s too big) have been held at the PCC facility. The PCC often co-sponsors and helps run the Oregon Open. Most of the two-day annual PCC tournaments are qualifiers for the Challengers section of the Oregon Closed. Two of the current PCC board members are also on the OCF board.

Oregon Scholastic Chess Federation (OSCF)
Runs the annual OSCF State Championship in Seaside, OSCF K-12 School Team Championship, OSCF All-Stars Invitational in Salem, and promotes scholastic chess of all levels. See the OSCF website for many local scholastic clubs/organizations. Most tournaments in Oregon, including most PCC events, are qualifiers for the OSCF State Championship, the premier scholastic tournament in the state which crowns the High School (9-12), Middle School (6-8), Elementary School (3-5), and Primary School (K-2) state champions and is usually the Oregon qualifier for the Denker National Tournament of High School (9-12) State Champions, Barber National Tournament of Middle School (6-8) State Champions, and Rockefeller National Tournament of Elementary School (K-5) State Champions. The tournament is now usually the largest tournament in Oregon each year.

Oregon High School Chess Team Association (OHSCTA)
Runs the annual OHSCTA State Team Championship, which rotates among different areas of the state, for high school and middle school players

Washington Chess Federation (WCF)
The US Chess and Northwest Chess state affiliate for Washington. Most of the tournaments the WCF sanctions are usually in the greater Seattle area but in the greater Portland area they run the annual Vancouver Open. They also run the Clark Harmon Memorial Open, which rotates between Oregon and Washington, every other year.

Washington State Elementary Chess Championship (WSECC)
Oversees the annual Washington State Elementary Chess Championship, usually the largest tournament in the Northwest each year by a large margin. The tournament rotates between different regions of the state. The Washington Middle School Championship is now usually run alongside the Elementary Championship.

Washington High School Chess Association (WHSCA)
Runs the annual Washington High School State Team Championship and Mini-Teams Championship, usually in the greater Seattle area. Along with the WCF, they give monetary support to the Washington representative of the Denker Tournament of High School Champions to attend that tournament.

Northwest Chess
Publishes the monthly Northwest Chess magazine (in print and online), the official publication of the Oregon Chess Federation, Washington Chess Federation, and Idaho Chess Association.

US Chess Federation (US Chess-formerly known as USCF)
The official national chess organization in the United States. Among other things, US Chess administers the national rating system, awards national titles, publishes the Chess Life (monthly) and Chess Life Kids (bi-monthly) magazines (in print and online), sanctions over twenty national championships annually, publishes a rulebook, and represents the US in FIDE. The Portland Chess Club is a US Chess affiliate. The PCC helped bring the 1987 US Open and 2002 National Elementary (K-6) Championship to Portland. The 2012 US Open was held in Vancouver. The Players & Ratings section of the US Chess website allows you to see, among other things, a players US Chess ratings, titles, rankings, and tournament history. It also allows you to estimate your new rating after a tournament. All PCC tournaments are currently US Chess rated.

Continental Chess Association (CCA)
Runs tournaments throughout the US, most of which are big tournaments with substantial cash prize funds. In addition, some of the tournaments give players the possibility of earning IM and GM norms.

World Chess Federation (FIDE)
The official international chess organization. FIDE (French acronym for World Chess Federation; the organization was founded in France) sanctions, runs, or sponsors the various world championships (overall, rapid, blitz, olympiad, team, senior, junior, youth, women, etc.). FIDE also administers the official international rating system and awards the Grandmaster (GM), International Master (IM), FIDE Master (FM), Candidate Master (CM), Woman Grandmaster (WGM), Woman International Master (WIM), Woman FIDE Master (WFM), and Woman Candidate Master (WCM) titles. A few tournaments in the Northwest are FIDE rated.

Professional Rapid Online (PRO) Chess League (formerly United States Chess League, USCL)
After eleven seasons as the USCL, the USCL became the PRO Chess League in 2017. The PRO Chess League is a team vs. team event played online. Each week during the season, each team chooses four of its players and they each play a rapid game at G/15;inc2 against each of the four players chosen from another team. Any city in the world can apply to join the PRO Chess League and you will likely be approved if you are a good fit for the league. Most of the players that play are at least a National Master and some of the best players in the world compete in it. Thousands of dollars are awarded in prizes. The PCC created a team in Portland for the inaugural edition of the PRO Chess League in 2017 called the Portland Rain and they played their matches at the PCC on chess.com. Check out the Portland Rain fan club page here.

Chess-site.com
Has reviews on many different things within the chess world. The PCC was given a review on the site in September of 2018 here.

There are numerous places to play chess online and some of the most popular sites are currently Chess.com, ChessAnyTime, ChessFriends.com, ChessOK Playing Zone, FIDE Online Arena, Free Internet Chess Server (FICS), Internet Chess Club (ICC), lichess, and Playchess. ICC hosted a match in 2012 between the PCC and the Mechanics Institute Chess Club located in San Francisco.