Service Credit Union Address: 2460 Lafayette Rd, Portsmouth, NH 03801 Phone: (603) 436-1901 Banks, Credit Unions Other Businesses: Centrix Bank & Trust at 163 Deer St, Portsmouth, NH 03801 Ocean Bank at 325 State St, Portsmouth, NH 03801 Service Credit Union at 2010 Lafayette Rd, Portsmouth, NH 03801 Citizens Bank at 134 Pleasant St, Portsmouth, NH 03801