
Diamondville Branch
Come over and see us right here in the Fossil Basin! Whether you’re coming off a shift, heading out for a weekend on the Hams Fork, or gearing up for the famous Oyster Ridge Music Festival, we’d love to catch up.
From opening a checking account to help manage the household to securing a loan for a new truck that can actually handle our Wyoming winters, we’re here for you. We’re proud to help you keep your money right here at home with folks who know your name. Come chat with us about a Mastercard® credit card or your next big goal—we’re more than just a financial institution; we’re your neighbors, and we’re proud to call Wyoming home.
Address:
41 US 30/189
Diamondville, WY, 83116
Lobby Hours:
Monday-Friday
9:00am - 5:00pm
Drive Through Hours:
Monday-Friday
9:00am - 5:30pm
Phone:
307-679-8341
Branch Manager:
Jaycee Romrell
Jaycee Romrell is the branch manager in Diamondville with a background in insurance that led her to a passion for mortgage lending. She joined Advantage Plus in 2025 and focuses on providing a personalized experience that supports borrowers through one of life’s biggest financial decisions.

Why Choose Advantage Plus in Diamondville, WY?
At Advantage Plus, you’re more than an account holder or loan borrower — you’re a member with a voice in everything we do.
Member-Owned Difference: As a not-for-profit, you gain access to lower loan rates, higher dividend rates, no fees, and more.
Customized Solutions: Whether you’re earning rewards, saving, or financing a big purchase, we’re here to help your money work for you.
Neighbors You Can Count On: Since 1953, we’ve been serving local support in Southeast Idaho and Western Wyoming to keep your money close to home.