Members 1st Member Contact: Phone Lines & Mailing Reference

Members 1st member service phone number and hours.

The primary Members 1st member service phone number is (717) 691-3500. The line is staffed Monday through Friday from approximately 7:30 a.m. to 8:00 p.m. Eastern and Saturday from 8:00 a.m. to 5:00 p.m. Eastern. The phone tree routes routine member-service calls to a live representative typically inside three to eight minutes during posted hours. Calls outside member-service hours that involve a lost or stolen card, suspected fraud, or emergency card-control activation route automatically to the dedicated Members 1st 24-hour card-assistance line.

What member service can resolve on the first call.

The Members 1st member-service line can resolve most routine items on the first call: balance verification, statement copies, transaction look-ups, password reset under identity verification, address and phone updates, debit and credit card replacement, account freezes, dispute initiation, and basic loan-application status. More complex items — notarized signature changes, large wire originations, deceased-member account handling, complex commercial loan disbursement — are typically routed to a branch lobby appointment for in-person completion.

Mailing address and written correspondence.

The Members 1st FCU corporate mailing address is 4555 Trindle Springs Drive, Mechanicsburg, PA 17050. Members sending physical mail — payments, signed disclosures, written disputes, certified delivery copies, or beneficiary designation forms — should reference the member account number on every enclosed page and use certified mail with return receipt when delivery confirmation matters. Loan-payment mailing instructions are printed on each loan statement; members should not assume that a loan payment routed to the corporate mailing address will reach the loan-servicing operations queue automatically.

Why written correspondence still matters at a digital-first credit union.

Even though the Members 1st mobile app handles most member transactions, certain documents must still travel on paper: notarized power-of-attorney filings, certified-copy estate paperwork, wet-signature beneficiary updates, and any document that depends on a physical certification stamp. Members 1st maintains the Mechanicsburg corporate address as the canonical receiving location for those documents.

Members 1st contact channel reference.

The table below summarizes Members 1st contact channels, the kinds of member tasks each channel handles, and posted hours.

When to call, when to message, and when to walk into a Members 1st branch.

Phone is the right channel for time-sensitive items, identity-verification flows, urgent dispute initiation, account freezes that need an immediate confirmation number, and the cluster of member tasks that require a member-service representative to read account history live. Secure messaging inside the Members 1st mobile app is the right channel for non-urgent items where the member wants a written record: dispute status follow-up, statement-copy requests, address updates, scheduled-transfer adjustments, and informational questions about Members 1st auto loan rates or Members 1st mortgage rates.

Branch lobby still wins for paper-anchored member tasks.

Branch lobby across the 70+ Members 1st locations remains the right channel for notarized signature cards, complex loan disbursement, deceased-member account handling, certified-copy estate paperwork, first-time member account opening with a deposit-share funded in person, and any conversation that benefits from a face-to-face Members 1st representative. Federal background on consumer banking-channel rights is published openly by the Consumer Financial Protection Bureau at consumerfinance.gov.