The challenge cache is in Tualatin, Oregon - the challenge is to find 25 caches with a post office abbreviation of a US state in the GC number. You may use 1 for I or L , 0 for O , 5 for S and V for U.

01 - US PO Abbreviation GC Challenge 

US PO Abbreviation GC Challenge

The challenge is to find 50 caches with a post office abbreviation of a US state in the GC number (no duplicates). You may use 1 for I or L , 0 for O , 5 for S and V for U.

02 - US PO Abbreviation GC Challenge Part 2

US PO Abbreviation GC Challenge Part 2

The challenge is find 9 geocaches with a post office abbreviation of a US Territory in the GC number (no duplicates).  You may use 1 for I or L , 0 for O , 5 for S and V for U.

03 US PO Abbreviation GC Challenge the Final 

US PO Abbreviation GC Challenge the Final

AK Crown Zellerbach Rd Or Columbia?

Crown Zellerbach Rd Or Columbia?

AR Buckman Community Mural

Buckman Community Mural

AZ Jonathan's 1st Cache

Jonathan's 1st Cache

CA Go Get IT!

Go Get IT!

IA Viola School

Viola School

IN Well Rested

Well Rested

KY Pittock Mansion

Pittock Mansion

NC 11 Alone

11 Alone

ND 35MM1

35MM1

OR Scott and Walt Come to Oregon State

Scott and Walt Come to Oregon State

PA The Grass Skirt - #1 Oahu North Shore Series

The Grass Skirt - #1 Oahu North Shore Series

zDC NFL Series: New York Giants

NFL Series: New York Giants

zGU William Sawyer

William Sawyer

zPR It's all happening at the Zoo!

It's all happening at the Zoo!

I have accepted the challenge to find 59 caches, each with a different United States Post Office state or territory abbreviation in the GC code.  I still need the following states: AL, CO, CT, DE, FL, GA, HI, ID, IL, KS, LA, MA, MD, ME, MI, MN, MO, MS, MT, NE, NH, NJ, NM, NV, NY, OH, OK, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI & WY.  I still need the following territories: AS, FM, MH, MP, PW & VI .

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US PO Abbreviation GC ChallengePublic